Senin, 11 Januari 2010

Rig pengeboran

Rig pengeboran


Langsung ke: navigasi, cari
Rig pengeboran darat
Rig pengeboran adalah suatu bangunan dengan peralatan untuk melakukan pengeboran ke dalam reservoir bawah tanah untuk memperoleh air, minyak, atau gas bumi, atau deposit mineral bawah tanah. Rig pengeboran bisa berada di atas tanah (on shore) atau di atas laut/lepas pantai (off shore) tergantung kebutuhan pemakaianya. Walaupun rig lepas pantai dapat melakukan pengeboran hingga ke dasar laut untuk mencari mineral-mineral, teknologi dan keekonomian tambang bawah laut belum dapat dilakukan secara komersial. Oleh karena itu, istilah "rig" mengacu pada kumpulan peralatan yang digunakan untuk melakukan pengeboran pada permukaan kerak Bumi untuk mengambil contoh minyak, air, atau mineral.
Rig pengeboran minyak dan gas bumi dapat digunakan tidak hanya untuk mengidentifikasi sifat geologis dari reservoir tetapi juga untuk membuat lubang yang memungkinkan pengambilan kandungan minyak atau gas bumi dari reservoir tersebut.
Rig pengeboran dapat berukuran:
  • Kecil dan mudah dipindahkan, seperti yang digunakan dalam pengeboran eksplorasi mineral
  • Besar, mampu melakukan pengeboran hingga ribuan meter ke dalam kerak Bumi. Pompa lumpur yang besar digunakan untuk melakukan sirkulasi lumpur pengeboran melalui mata bor dan casing (selubung), untuk mendinginkan sekaligus mengambil "bagian tanah yang terpotong" selama sumur dibor.
Katrol di rig dapat mengangkat ratusan ton pipa. Peralatan lain dapat mendorong asam atau pasir ke dalam reservoir untuk mengambil contoh minyak dan mineral; akomodasi untuk kru yang bisa berjumlah ratusan. Rig lepas pantai dapat beroperasi ratusan hingga ribuan kilometer dari pinggir pantai.

sumber:http://id.wikipedia.org/wiki/Rig_pengeboran

Minggu, 10 Januari 2010

Penghuni Indonesia Purba

Penghuni Indonesia Purba

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Sebuah artikel yang cukup menggugah nalar dan mengguncang tatanan sejarah bangsa ini. Sayangnya saya tidak menemukan author dari artikel ini. Selamat meresapi dan merenung.
Kembali ke masa prasejarah, penghuni wilayah Nusantara hanya terdiri dari dua golongan yakni Pithecantropus Erectus beserta manusia Indonesia purba lainnya dan keturunan bangsa pendatang di luar Nusantara yang datang dalam beberapa gelombang.
Berdasarkan fosil-fosil yang telah ditemukan di wilayah Indonesia, dapat dipastikan bahwa sejak 2.000.000 (dua juta) tahun yang lalu wilayah ini telah dihuni. Penghuninya adalah manusia-manusia purba dengan kebudayaan batu tua atau mesolithicum seperti Meganthropus Palaeo Javanicus, Pithecanthropus Erectus, Homo Soloensis dan sebagainya. Manusia-manusia purba ini sesungguhnya lebih mirip dengan manusia-manusia yang kini dikenal sebagai penduduk asli Australia.
Dengan demikian, yang berhak mengklaim dirinya sebagai “penduduk asli Indonesia” adalah kaum Negroid, atau Austroloid, yang berkulit hitam. Manusia Indonesia purba membawa kebudayaan batu tua atau palaeolitikum yang masih hidup secara nomaden atau berpindah dengan mata pencaharian berburu binatang dan meramu. Wilayah Nusantara kemudian kedatangan bangsa Melanesoide yang berasal dari teluk Tonkin, tepatnya dari Bacson-Hoabinh. Dari artefak-artefak yang ditemukan di tempat asalnya menunjukan bahwa induk bangsa ini berkulit hitam berbadan kecil dan termasuk type Veddoid-Austrolaid.
Bangsa Melanesoide dengan kebudayaan mesolitikum yang sudah mulai hidup menetap dalam kelompok, sudah mengenal api, meramu dan berburu binatang.Teknologi pertanian juga sudah mereka genggam sekalipun mereka belum dapat menjaga agar satu bidang tanah dapat ditanami berkali-kali. Cara bertani mereka masih dengan sistem perladangan. Dengan demikian, mereka harus berpindah ketika lahan yang lama tidak bisa ditanami lagi atau karena habisnya makanan ternak. Gaya hidup ini dinamakan semi nomaden. Dalam setiap perpindahan manusia beserta kebudayaan yang datang ke Nusantara, selalu dilakukan oleh bangsa yang tingkat peradabannya lebih tinggi dari bangsa yang datang sebelumnya.
Dari semua gelombang pendatang dapat dilihat bahwa mereka adalah bangsa-bangsa yang mulai bahkan telah menetap. Jika kehidupannya mereka masih berpindah, maka perpindahan bukanlah sesuatu hal yang aneh. Namun dalam kehidupan yang telah menetap, pilihan untuk meninggalkan daerah asal bukan tanpa alasan yang kuat. Ketika kehidupan mulai menetap maka yang pertama dan yang paling dibutuhkan adalah tanah sebagai media untuk tetap hidup. Mereka sangat membutuhkan tanah yang luas karena teknologi pertaniannya masih rendah. Mereka belum sanggup menjaga, apalagi meningkatkan, kesuburan tanah. Mereka membutuhkan sistem pertanian yang ekstensif, dan perpindahan untuk penguasaan lahan-lahan baru setiap jangka waktu tertentu. Sebelum didatangi bangsa-bangsa pengembara dari luar, tanah di Nusantara belum menjadi kepemilikan siapapun.
Hal ini berbeda dengan Manusia Indonesia Purba yang tidak memerlukan tanah sebagai modal untuk hidup karena mereka berpindah-pindah. Ketika sampai di satu tempat yang dilakukannya adalah mengumpulkan makanan (food gathering). Biasanya tempat yang dituju adalah lembah-lembah atau wilayah yang terdapat aliran sungai untuk mendapatkan ikan atau kerang (terbukti dengan ditemukannya fosil-fosil manusia purba di wilayah Nusantara di lembah-lembah sungai) walaupun tidak tertutup kemungkinan ada pula yang memilih mencari di pedalaman. Ketika bangsa Melanesoide datang, mereka mulai menetap walaupun semi nomaden. Mereka akan pindah jika sudah tidak mendapatkan lagi makanan. Maka pilihan atas tempat-tempat yang akan ditempatinya adalah tanah yang banyak menghasilkan. Wilayah aliran sungai pula yang akan menjadi targetannya. Padahal, wilayah ini adalah juga wilayah di mana para penduduk asli mengumpulkan makanannya.
Ini mengakibatkan benturan yang tidak terelakan antara kebudayaan palaeolithikum dengan kebudayaan yang mesolithikum. Alat-alat sederhana seperti kapak genggam atau choppers, alat-alat tulang dan tanduk rusa berhadapan dengan kapak genggam yang lebih halus atau febble, kapak pendek dan sebagainya. Pertemuan ini dapat mengakibatkan beberapa hal yaitu:
1. Penduduk asli ditumpas, atau
2. Mereka diharuskan masuk dan bersembunyi di pedalaman untuk menyelamatkan diri, atau
3. Mereka yang ditaklukkan dijadikan hamba, dan kaum perempuannya dijadikan harem-harem untuk melayani para pemenang perang.
Sekitar tahun 2000 SM, bangsa Melanesoide yang akhirnya menetap di Nusantara kedatangan pula bangsa yang kebudayaannya lebih tinggi yang berasal dari rumpun Melayu Austronesia yakni bangsa Melayu Tua atau Proto Melayu, suatu ras mongoloid yang berasal dari daerah Yunan, dekat lembah sungai Yang Tze, Cina Selatan. Alasan-alasan yang me-nyebabkan bangsa Melayu tua meninggalkan asalnya yaitu :
1. Adanya desakan suku-suku liar yang datangnya dari Asia Tengah;
2. Adanya peperangan antar suku;
3. Adanya bencana alam berupa banjir akibat sering meluapnya sungai She Kiang dan sungai-sungai lainnya di daerah tersebut.
Suku-suku dari Asia tengah yakni Bangsa Aria yang mendesak Bangsa Melayu Tua sudah pasti memiliki tingkat kebudayaan yang lebih tinggi lagi. Bangsa Melayu Tua yang terdesak meninggalkan Yunan dan yang tetap tinggal bercampur dengan Bangsa Aria dan Mongol. Dari artefak yang ditemukan yang berasal dari bangsa ini yaitu kapak lonjong dan kapak persegi.Kapak lonjong dan kapak persegi ini adalah bagian dari kebudayaan Neolitikum. Ini berarti orang-orang Melayu Tua, telah mengenal budaya bercocok tanam yang cukup maju dan bukan mustahil mereka sudah beternak. Dengan demikian mereka telah dapat menghasilkan makanan sendiri (food producing). Kemampuan ini membuat mereka dapat menetap secara lebih permanen.
Pola menetap ini mengharuskan mereka untuk mengembangkan berbagai jenis kebudayaan awal. Mereka juga mulai membangun satu sistem politik dan pengorganisasian untuk mengatur pemukiman mereka. Pengorganisasian ini membuat mereka sanggup belajar membuat peralatan rumah tangga dari tanah dan berbagai peralatan lain dengan lebih baik. Mereka mengenal adanya sistim kepercayaan untuk membantu menjelaskan gejala alam yang ada sehubungan dengan pertanian mereka. Sama seperti yang terjadi terdahulu, pertemuan dua peradaban yang berbeda kepentingan ini, mau tidak mau, melahirkan peperangan-peperangan untuk memperebutkan tanah. Dengan pengorganisiran yang lebih rapi dan peralatan yang lebih bermutu, kaum pendatang dapat mengalahkan penduduk asli. Kebudayaan yang mereka usung kemudian menggantikan kebudayaan penduduk asli. Sisa-sisa pengusung kebudayaan Batu Tua kemudian menyingkir ke pedalaman. Beberapa suku bangsa merupakan keturunan dari para pelarian ini, seperti suku Sakai, Kubu, dan Anak Dalam.
Arus pendatang tidak hanya datang dalam sekali saja. Pihak-pihak yang kalah dalam perebutan tanah di daerah asalnya akan mencari tanah-tanah di wilayah lain. Demikian juga yang menimpa bangsa Melayu Tua yang sudah mengenal bercocok tanam, beternak dan menetap. Kembali lagi, daerah subur dengan aliran sungai atau mata air menjadi incaran.
Wilayah yang sudah mulai ditempati oleh bangsa melanesoide harus diperjuangkan untuk dipertahankan dari bangsa Melayu Tua.Tuntutan budaya yang sudah menetap mengharuskan mereka mencari tanah baru. Dengan modal kebudayaan yang lebih tinggi, bangsa Melanesoide harus menerima kenyataan bahwa telah ada bangsa penguasa baru yang menempati wilayah mereka.
Namun kedatangan bangsa Melayu Tua ini juga memungkinkan terjadinya percampuran darah antara bangsa ini dengan bangsa Melanesia yang telah terlebih dahulu datang di Nusantara. Bangsa Melanesia yang tidak bercampur terdesak dan mengasingkan diri ke pedalaman. Sisa keturunannya sekarang dapat didapati orang-orang Sakai di Siak, Suku Kubu serta Anak Dalam di Jambi dan Sumatera Selatan, orang Semang di pedalaman Malaya, orang Aeta di pedalaman Philipina, orang-orang Papua Melanesoide di Irian dan pulau-pulau Melanesia.
Pada gelombang migrasi kedua dari Yunan di tahun 2000-300 SM, datanglah orang-orang Melayu Tua yang telah bercampur dengan bangsa Aria di daratan Yunan. Mereka disebut orang Melayu Muda atau Deutero Melayu dengan kebudayaan perunggunya. Kebudayaan ini lebih tinggi lagi dari kebudayaan Batu Muda yang telah ada karena telah mengenal logam sebagai alat perkakas hidup dan alat produksi. Kedatangan bangsa Melayu Muda mengakibatkan bangsa Melayu Tua yang tadinya hidup di sekitar aliran sungai dan pantai terdesak pula ke pedalaman karena kebudayaannya kalah maju dari bangsa Melayu Muda dan kebudayaannya tidak banyak berubah. Sisa-sisa keturunan bangsa melayu tua banyak ditemukan di daerah pedalaman seperti suku Dayak, Toraja, orang Nias, batak pedalaman, Orang Kubu dan orang Sasak. Dengan menguasai tanah, Bangsa Melayu Muda dapat berkembang dengan pesat kebudayaannya bahkan menjadi penyumbang terbesar untuk cikal-bakal bangsa Indonesia sekarang.
Dari seluruh pendatang yang pindah dalam kurun waktu ribuan tahun tersebut tidak seluruhnya menetap di Nusantara. Ada juga yang kembali bergerak ke arah Cina Selatan dan kemudian kembali ke kampung halaman dengan membawa kebudayaan setempat atau kembali ke Nusantara. Dalam kedatangan-kedatangan tersebut penduduk yang lebih tua menyerap bahasa dan adat para imigran. Jarang terjadi pemusnahan dan pengusiran bahkan tidak ada penggantian penduduk secara besar-besaran. Percampuran-percampuran inilah yang menjadi cikal bakal Nusantara yang telah menjadi titik pertemuan dari ras kuning (mongoloid) yang bermigrasi ke selatan dari Yunan, ras hitam yang dimiliki oleh bangsa Melanesoide dan Ceylon dan ras putih anak benua India.
Sehingga tidak ada penduduk atau ras asli wilayah Nusantara kecuali para manusia purba yang ditemukan fosil-fosilnya. Kalaupun memang ada penduduk asli Indonesia maka ia terdesak terus oleh pendatang-pendatang boyongan sehingga secara historis-etnologis terpaksa punah atau dipunahkan dalam arti sesungguhnya atau kehilangan ciri-ciri kebudayaannya dan terlebur di dalam masyarakat baru. Semua adalah bangsa-bangsa pendatang.
Daftar Pustaka:
D. G. E. Hall. Sejarah Asia Tenggara. Cet.I. Surabaya-Usaha Nasional. 1988 Stanley. Makalah Arus Dari Utara. 1998
T. Parakitri Simbolon. Menjadi Indonesia, buku I “Akar-akar kebangsaan Indonesia”. Cet.I. Jakarta-Kompas-Grasindo. 1995.
Dr. M. Prijohutomo & P.J. Reimer. Tentang Orang dan Kejadian Jang Besar Djilid I. Tjet.V. Djakarta-Amnsterdam: W.Versluys N.V.
Pramoedya Ananta Toer. Hoakiau di Indonesia. Jakarta-Garba Budaya.1998

sumber:http://peradaban-nusantara.kolomnyawied.com/2009/04/penghuni-indonesia-purba/

Purba

Purba

Dari Wikipedia bahasa Indonesia, ensiklopedia bebas

Langsung ke: navigasi, cari
Purba adalah salah satu marga atau morga dari empat marga asli dari suku Simalungun yang aslinya berasal dari daerah yang bernama Simalungun di provinsi Sumatera Utara, Indonesia.

Asal-usul Etimologi

Secara Etimologi Purba berasal dari bahasa Sanskerta, purwa yang berarti timur. Arti lainnya adalah gelagat masa datang, pegatur, pemegang Undang-undang, tenungan pengetahuan, cendekiawan/sarjana.[1]

[sunting] Kerajaan Purba

Rumah Bolon Raja Purba di Pematang Purba, Simalungun.
Purba adalah marga dari Raja di kerajaan Banua Purba, salah satu kerajaan yang pernah ada di daerah Simalungun. Raja Purba memiliki keturunan: Tambak, Sigumonrong, Tua, Sidasuha (Sidadolog, Sidagambir). Kemudian ada lagi Purba Siborom Tanjung, Pakpak, Girsang, Tondang, Sihala, Raya.
Pada abad ke-18 ada beberapa marga Simamora dari Bakkara melalui Samosir untuk kemudian menetap di Haranggaol dan mengaku dirinya Purba. Purba keturunan Simamora (kemungkinan Purba Sigulang Batu) ini kemudian menjadi Purba Manorsa dan tinggal di Tangga Batu dan Purbasaribu. Sebagian orang percaya bahwa keturunan Simamora inilah yang menjadi leluhur marga Purba yang ada di daerah Simalungun. Keturunan Simamora ini menetap dan beranak cucu di daerah tersebut dan keturunannya dianggap sebagai orang Simalungun dan bukan lagi keturunan orang Toba (beda dengan Purba Sigulang Batu), yang menjadi leluhurnya. semakin lama keturunan Purba ini semakin banyak hingga jumlahnya menjadi lebih besar dari Purba Sigulang Batu yang tidak merantau ke tanah Simalungun.
Pada tahun 1996, salah satu putra dari Raja Siboro diculik dan dinyatakan menghilang berserta ketiga saudaranya.

[sunting] Raja-Raja Kerajaan Purba Pak-Pak di Pematang Purba

  1. Tuan Pangultop Ultop (1624-1648)
  2. Tuan Ranjiman (1648-1669)
  3. Tuan Nanggaraja (1670-1692)
  4. Tuan Batiran (1692-1717)
  5. Tuan Bakkaraja (1718-1738)
  6. Tuan Baringin (1738-1769)
  7. Tuan Bona Batu (1769-1780)
  8. Tuan Raja Ulan (1781-1769)
  9. Tuan Atian (1800-1825)
  10. Tuan Horma Bulan (1826-1856)
  11. Tuan Raondop (1856-1886)
  12. Tuan Rahalim (1886-1921)
  13. Tuan Karel Tanjung (1921-1931)
  14. Tuan Mogang (1933-1947)

[sunting] Submarga Purba

Purba terdiri dari banyak sub-marga, antara lain:
  1. Girsang
    1. Girsang Jabu Bolon
    2. Girsang Na Godang
    3. Girsang Parhara
    4. Girsang Rumah Parik
    5. Girsang Bona Gondang
  2. Pakpak
  3. Raya
  4. Siboro
  5. Siborom Tanjung
  6. Sidasuha
    1. Sidadolog
    2. Sidagambir
  7. Sigumonrong
  8. Sihala
  9. Silangit
  10. Tambak
  11. Tambun Saribu
  12. Tanjung
  13. Tondang
  14. Tua
Selain dari sub marga di atas, beberapa suku yang hidup di sekitar daerah Simalungun juga berbaur dengan penduduk bermarga Purba dan mengakibatkan timbulnya afiliasi marga-marga lain dengan marga Purba, antara lain: Manorsa, Simamora, Sigulang Batu, Parhorbo, Sitorus dan Pantomhobon.

[sunting] Purba Tanjung

Purba Tanjung berasal dari Sipinggan, Simpang Haranggaol, Kecamatan Purba, Kabupaten Simalungun. Beberapa sumber menyatakan bahwa "Tanjung" pada marga ini berasal dari lokasi kampung Sipinggan yang merupakan sebuah Tanjung di Danau Toba, arah Haranggaol.
Keturunan Purba Tanjung berasal dari garis keturunan Ompung Marsahan Omas (dalam bahasa Indonesia berarti Bercawan Emas, karena kebiasaannya minum dari cawan Emas), yang adalah keturunan Purba Parhorbo. Marsahaan Omas memiliki keturunan bernama Bongguran yang memiliki kebiasaan "maranggir" (mandi air jeruk purut) di sekitar kampung Nagori, dengan menggunakan cawan emas.
Marsahan Omas memiliki 3 keturunan:
  1. Tuan Siborna
  2. Nahoda Raja
  3. Namora Soaloon
Nahoda Raja memiliki anak bernama Raja Omo yang merupakan Purba Tanjung pertama yang bermukim di Sipinggan.

sumber:http://id.wikipedia.org/wiki/Purba

Gitar Elektrik

Gitar Elektrik

September 17, 2008 at 9:13 pm (Uncategorized)
Banyak sekali alat musik yang tercipta di dunia ini. Namun, alat musik yang paling mudah kita jumpai di Indonesia bahkan di dunia adalah Gitar.
Gitar telah banyak memberikan kontribusi dalam dunia musik di bumi ini.Telah banyak lagu yang tercipta oleh manusia dengan alat musik berdawai ini.
Gitar, adalah alat musik berdawai yang di mainkan dengan cara di petik atau di “rhytm” (di genjreng) yang memiliki rongga khusus sebagai resonator (pada akustik) atau memiliki sensor penangkap gelombang suara yang di sebut pick up  (pada elektrik).
Pada umumnya, gitar yang bisa kita lihat berdawai 6. tetapi sebenarnya gitar ini memiliki banyak tipe dawai. Ada yang berdawai 6, 7, 10, dan 12. Semua itu tergantung kebutuhan nada yang di inginkan oleh si pemain.
Pada topik kali ini, saya membatasi hanya pada gitar elektrik. Gitar elektrik pertama kali di pakai oleh pemain gitar jazz pada tahun 1930an. Penemu gitar yang paling terkenal waktu itu ( bahkan sampai sekarang) adalah Lester William Polsfuss atau yang lebih di kenal sebagai Les Paul.
Sampai sekarang Les Paul telah menjadi model gitar yang sangat populer. Banyak pabrikan gitar yang menciptakan model gitar ini. Gambar sebuah gitar listrik model Les Paul :

Pada gitar ini, di gunakan pickup humbucker, yang di ciptakan oleh pabrik gitar Gibson. Humbucker adalah gabungan 2 batangan magnit yang dililitkan kumparan tembaga sebagai pengubah gelombang suara menjadi gelombang listrik yang dialirkan ke dalam amplifier. Suara yang di hasilkan gitar ini tebal, karna adanya 2 batang magnit tersebut.
Gitar lain yang pada waktu itu juga sangat terkenal ada lah Gitar Fender Telecaster. Gitar ini juga di ciptakan tak lama setelah munculnya Gibson Les paul. Fender Telecaster ini menggunakan hanya satu batang magnit yang di sebut single coil. Tetapi jaman sekarang sudah diciptakan Fender Telecaster dengan Humbucker.   Berikut ini gambar sebuah gitar Fender Telecaster :

Namun tak lama kemudian muncul lah bentuk gitar elektrik yang paling terkenal sampai sekarang yaitu model Stratocaster. Model ini juga pertama kali diperkenalkan oleh Fender. Berikut ini contoh gitar Stratocaster :

Bentuk gitar ini sampai sekarang masih menjadi bentuk gitar yang sangat banyak di gunakan oleh seluruh pemain gitar elektrik. Stratocaster juga menggunakan single coil pada awalnya, namun sekarang juga telah ada yang dimodifikasikan dengan humbucker.

sumber:http://willywisily.wordpress.com/2008/09/17/gitar-elektrik/

Sejarah gitar....

Sejarah gitar....

gitar? atau guitar dalam bahasa Inggris, pada mulanya diambil dari nama alat musik petik kuno di wilayah Persia pada kira-kira tahun 1500 SM yang dikenal sebagai citar atau sehtar. Alat musik ini kemudian berkembang menjadi berbagai macam model gitar kuno yang dikenal dengan istilah umum tanbur. Pada tahun 300 SM Tanbur Persia dikembangkan oleh bangsa Yunani dan enam abad kemudian oleh bangsa Romawi (Bellow, 1970:54-55). Pada tahun 476M alat musik ini dibawa oleh bangsa Romawi ke Spanyol dan bertransformasi menjadi: (1) guitarra Morisca yang berfungsi sebagai pembawa melodi, dan (2) Guitarra Latina untuk memainkan akor. Tiga abad kemudian bangsa Arab membawa semacam gitar gambus dengan sebutan al ud ke Spanyol (Summerfield, 1982:12). Berdasarkan konstruksi al ud Arab dan kedua model gitar dari Romawi tersebut, bangsa Spanyol kemudian membuat alat musiknya sendiri yang disebut vihuela. Sebagai hasilnya, vihuela menjadi populer di Spanyol sementara alat-alat musik pendahulunya sedikit demi sedikit ditinggalkan. Walaupun demikian al ud dibawa orang ke negara-negara Eropa Barat dan menyaingi popularitas vihuela di Spanyol. Di Eropa al ud disambut dengan baik dan berkembang menjadi berbagai model lute Eropa hingga kira-kira akhir abad ke-17. Sementara itu vihuela berkembang terus menjadi berbagai macam gitar selama berabad-abad hingga akhirnya menjadi gitar klasik yang digunakan pada saat ini.

sumber:http://www.kaskus.us/showthread.php?p=74221268

penemu gitar

Siapa penemu alat musik gitar ? ?

  • sejarah gitar:

gitar? atau guitar dalam bahasa Inggris, pada mulanya diambil dari nama alat musik petik kuno di wilayah Persia pada kira-kira tahun 1500 SM yang dikenal sebagai citar atau sehtar. Alat musik ini kemudian berkembang menjadi berbagai macam model gitar kuno yang dikenal dengan istilah umum tanbur. Pada tahun 300 SM Tanbur Persia dikembangkan oleh bangsa Yunani dan enam abad kemudian oleh bangsa Romawi (Bellow, 1970:54-55). Pada tahun 476M alat musik ini dibawa oleh bangsa Romawi ke Spanyol dan bertransformasi menjadi: (1) guitarra Morisca yang berfungsi sebagai pembawa melodi, dan (2) Guitarra Latina untuk memainkan akor. Tiga abad kemudian bangsa Arab membawa semacam gitar gambus dengan sebutan al ud ke Spanyol (Summerfield, 1982:12). Berdasarkan konstruksi al ud Arab dan kedua model gitar dari Romawi tersebut, bangsa Spanyol kemudian membuat alat musiknya sendiri yang disebut vihuela. Sebagai hasilnya, vihuela menjadi populer di Spanyol sementara alat-alat musik pendahulunya sedikit demi sedikit ditinggalkan. Walaupun demikian al ud dibawa orang ke negara-negara Eropa Barat dan menyaingi popularitas vihuela di Spanyol. Di Eropa al ud disambut dengan baik dan berkembang menjadi berbagai model lute Eropa hingga kira-kira akhir abad ke-17. Sementara itu vihuela berkembang terus menjadi berbagai macam gitar selama berabad-abad hingga akhirnya menjadi gitar klasik yang digunakan pada saat ini.

sumber:http://nz.answers.yahoo.com/question/index?qid=20081203210806AA5G8e1

Sejarah Gitar

Sejarah Gitar


Sejarah Guitar
Walaupun gitar lebih terkenal sebagai alat musik selama era modern, seperti gitar-instrumen telah eksis di berbagai budaya di seluruh dunia lebih dari lima ribu tahun. Dengan sejarah yang panjang, hampir mustahil untuk menutup keseluruhan dalam lingkup artikel ini. Sebagai gantinya, menyebutkan beberapa perkembangan signifikan dalam sejarah yang panjang untuk membantu menggambarkan sejarah gitar.

Kata "gitar" dibawa ke dalam bahasa Inggris sebagai adaptasi dari Spanyol kata "guitarra," yang, pada gilirannya, yang berasal dari Yunani "kithara." Menilik akar kata selanjutnya kembali ke bahasa sejarah, tampaknya telah kombinasi Indo-Eropa batang "guit-," berarti musik, dan akar "-tar," berarti senar atau string. Root "ter-" sebenarnya umum untuk sejumlah bahasa, dan juga dapat ditemukan dalam kata "sitar," juga gesekan alat musik. Walaupun ejaan dan pengucapan berbeda antara bahasa, unsur-unsur tersebut tombol yang sudah ada di sebagian besar untuk kata "gitar" sepanjang sejarah.

Ada ketidakpastian tentang tepat tanggal dibuat gitar. Kemungkinan adalah tanggal 1779, dan dibuat oleh superlee Vinaccia. Namun, keaslian dari enam string gitar diduga telah dibuat sebelum 1790 , karena banyak yang palsu ditemukan. Awal abad kesembilan belas umumnya diterima sebagai jangka waktu perubahan gitar enam string mengenai bentuk dan dimensi. Jadi hampir dua ratus tahun, luthiers, atau pembuat gitar n, telah memproduksi versi modern gitar akustik.

Gitar listrik pertama tidak dikembangkan sampai awal abad kedua puluh. George Beauchamp menerima paten pertama untuk sebuah gitar listrik di 1936, Beauchamp menemukan Rickenbacker, awalnya dikenal sebagai the Electro String Instrument Company, dengan Adolph Rickenbacher. Ejaan nama perusahaan yang berbeda dari Rickenbacher's diberi julukan bahwa dirinya dari keturunan Jerman, yang dianggap sebagai tersangka selama perang dunia. Meskipun Rickenbacker mulai memproduksi gitar listrik pada akhir tahun 1930an, merek ini tenar di tahun 1960-an, ketika John Lennon menggunakan gitar Rickenbacker untuk debut Beatles di Ed Sullivan pada tahun 1964. George Harrison kemudian membeli sendiri gitar Rickenbacker, dan perusahaan kemudian beri dia salah satu dari dua belas string gitar listrik. Paul McCartney juga menggunakan Rickenbacker bass untuk rekamannya. The Beatles terus menggunakan gitar Rickenbacker sepanjang karir mereka, dan membuat instrumen ini sangat populer di kalangan musisi pada masa itu.

The Fender Musical Instruments Company dan Gibson Guitar Corporation adalah ahli gitar listrik, keduanya mengembangkan beberapa model pada awal tahun 1950-an. Dimulai dengan Fender Telecaster di 1950 dan 1951, dan Fender Stratocaster debuted pada 1954. Gibson mulai menjual Gibson Les Paul, sebagian didasarkan pada bantuan dari musisi jazz dan gitar inovator Les Paul, di tahun 1952. Mayoritas hari gitar listrik masih sebagian besar desain masih didasarkan pada tiga model ini.

Sepanjang sejarah gitar dan instrumen sejenis, rata rata mereka membuat gitar, dimainkan, dan dirasakan sendiri. Dengan melihat seluruh sejarah gitar, bukan hanya perkembangan terakhir, sebagian besar gitar listrik, didasari atas ide ide dari generasi sebelumnya.
 
sumber:http://www.ngobrolaja.com/showthread.php?t=29024

Electric guitar

Electric guitar

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A Gibson Les Paul
An electric guitar (aka mum guitar, electric or electro) is a guitar using pickups to convert its metal string vibration into electricity. This is amplified with an instrument amplifier. The output is altered with guitar effects such as reverb or distortion. The earliest electric guitars were hollow bodied acoustic instruments with tungsten steel pickups made by Rickenbacker in 1931. The electric guitar was a key instrument in the development of musical styles that emerged since the late 1940s, such as Chicago blues, early rock and roll and rockabilly, and 1960s blues rock. It is used in almost every popular music genre.

[edit] History

There has always been a quest for louder instruments. The guitar was a good candidate for amplification due to its acoustic properties and for its potential as a polyphonic solo instrument. The need for an amplified guitar became apparent during the big band era, as orchestras increased in size: particularly when guitars had to compete with large brass sections. The first electric guitars used in jazz were hollow archtop acoustic guitar bodies with electromagnetic transducers. By 1932 an electrically amplified guitar was commercially available. An early commercially successful solid-body electric guitar was the Fender Esquire in 1950.
Sketch of Rickenbacker "frying pan" lap steel from 1934 patent application.
Electric guitars were originally designed by luthiers, guitar makers, electronics enthusiasts, and instrument manufacturers. Guitar innovator Les Paul experimented with microphones attached to guitars.[1] Some of the earliest electric guitars adapted hollow bodied acoustic instruments and used tungsten pickups. An electrically amplified guitar was developed by George Beauchamp in 1931. Commercial production began in late summer of 1932 by Electro-Patent-Instrument Company Los Angeles, a partnership of Adolph Rickenbacker, Paul Barth and George Beauchamp, the inventor. The wooden body of the prototype was built by Harry Watson, a craftsman who had worked for the National Resophonic Guitar Company (where the men met). By 1934 the company was renamed Rickenbacker Electro Stringed Instrument Company.[2]
The earliest documented performance with an electrically amplified guitar was in 1932, by Gage Brewer.[3] The Wichita, Kansas-based musician had an Electric Hawaiian A-25 (Fry-pan, lap-steel) and a standard Electric Spanish from George Beauchamp of Los Angeles, California. Brewer publicized his new instruments in an article in the Wichita Beacon, October 2, 1932 and through performances that month. Brewer's original 1932 Ro-Pat-In Electro Spanish guitar can currently be viewed at the Wichita-Sedgwick County Historical Museum.
The first recordings using the electric guitar were by Hawaiian style players, including Andy Iona in 1933. Bob Dunn of Milton Brown's Musical Brownies introduced the electric Hawaiian guitar to Western Swing with his January 1935 Decca recordings, departing almost entirely from Hawaiian musical influence and heading towards Jazz and Blues. Alvino Rey was an artist who took this instrument to a wide audience in a large orchestral setting and later developed the pedal steel guitar for Gibson. An early proponent of the electric Spanish guitar was jazz guitarist George Barnes who used the instrument in two songs recorded in Chicago on March 1, 1938, Sweetheart Land and It's a Low-Down Dirty Shame. Some incorrectly attribute the first recording to Eddie Durham, but his recording with the Kansas City Five was 15 days later.[4] Durham introduced the instrument to a young Charlie Christian, who made the instrument famous in his brief life and would be a major influence on jazz guitarists for decades thereafter.[citation needed]
The first recording of an electric Spanish guitar, west of the Mississippi was in Dallas, in September 1935, during a session with Roy Newman and His Boys, an early Western swing dance band. Their guitarist, Jim Boyd, used his electrically amplified guitar during the recording of three songs, "Hot Dog Stomp" (DAL 178-Vo 03371), "Shine On, Harvest Moon" (DAL 180-Vo 03272), and "Corrine, Corrina" (DAL 181-Vo/OK 03117).[5][6][7] An even earlier Chicago recording of an electrically amplified guitar—albeit an amplified lap steel guitar—was during a series of session by Milton Brown and His Brownies (another early Western swing band) that took place January 27-28, 1935, wherein Bob Dunn played his amplified Hawaiian guitar.[8]
Early proponents of the electric guitar on record include: Jack Miller (Orville Knapp Orch.), Alvino Rey (Phil Spitalney Orch.), Les Paul (Fred Warring Orch.), Danny Stewart (Andy Iona Orchestra), George Barnes (under many alias), Floyd Smith, Bill Broonzy, T-Bone Walker, George Van Eps, Charlie Christian (Benny Goodman Orch.) Tampa Red, Memphis Minnie, and Arthur Cruddup.
Early electric guitar manufacturers include: Rickenbacker (first called Ro-Pat-In) in 1932, Dobro in 1933, National, AudioVox and Volu-tone in 1934,Vega, Epiphone (Electrophone and Electar), and Gibson in 1935 and many others by 1936.
The solid body electric guitar is made of solid wood, without functionally resonating air spaces. Rickenbacher, later spelled Rickenbacker, offered a cast aluminum electric steel guitar, nicknamed The Frying Pan or The Pancake Guitar, developed in 1931 with production beginning in the summer of 1932. This guitar sounds quite modern and aggressive as tested by vintage guitar researcher John Teagle. The company Audiovox built and may have offered an electric solid-body as early as the mid-1930s.
The first solid body "Spanish" standard guitar was offered by Vivi-Tone no later than 1934. An example of this model, featuring a guitar-shaped body of a single sheet of plywood affixed to a wood frame, can be seen in the Experience Music Project. [9] Another early, substantially solid Spanish electric guitar was marketed by the "Rickenbacker" guitar company in 1935 and made of an early cast plastic called Bakelite. By 1936 the Slingerland company introduced a solid body electric model made of solid wood.
A functionally solid body electric guitar was designed and built by Les Paul from an Epiphone acoustic archtop. His log guitar (so called because it consisted of a simple 4x4 wood post with a neck attached to it and homemade pickups and hardware, with two detachable Swedish hollow body halves attached to the sides for appearance only) shares nothing in design or hardware with the solid body "Les Paul" model sold by Gibson. However, the feedback problem associated with hollow-bodied electric guitars was understood long before Paul's "log" was created in 1940; Gage Brewer's Ro-Pat-In of 1932 had a top so heavily reinforced that it essentially functioned as a solid-body instrument.[10]
In 1945, Richard D. Bourgerie made an electric guitar pickup and amplifier for professional guitar player George Barnes. Bourgerie worked through World War II at Howard Radio Company making electronic equipment for the American military. Mr. Barnes showed the result to Les Paul, who then arranged for Mr. Bourgerie to have one made for him.

[edit] Fender

Sketch of Fender lap steel guitar from 1944 patent application.
In 1946, radio repairman and instrument amplifier maker Clarence Leonidas Fender—better known as Leo Fender—through his eponymous company, designed the first commercially successful solid-body electric guitar with a single magnetic pickup, which was initially named the "Esquire". This was a departure from the typically hollow-bodied Jazz-oriented instruments of the time and immediately found favor with Country-Western artists in California. The two-pickup version of the Esquire was called the "Broadcaster". However, Gretsch had a drumset marketed with a similar name (Broadkaster), so Fender changed the name to "Telecaster".
Features of the Telecaster included: an ash body; a maple 25½" scale, 21-fret or 22-fret neck attached to the body with four-bolts reinforced by a steel neckplate; two single-coil, 6-pole pickups (bridge and neck positions) with tone and volume knobs, pickup selector switch; and an output jack mounted on the side of the body. A black bakelite pickguard concealed body routings for pickups and wiring. The bolt-on neck was consistent with Leo Fender's belief that the instrument design should be modular to allow cost-effective and consistent manufacture and assembly, as well as simple repair or replacement. Due to the earlier mentioned trademark issue, some of the first production Telecasters were delivered with headstock decals with the Fender logo but no model identification.
A 2004 maple necked Fender Stratocaster next to a Vox amplifier.
In 1954, Fender introduced the Fender Stratocaster, or "Strat." The Stratocaster was seen as a deluxe model and offered various product improvements and innovations over the Telecaster. These innovations included a well dried ash or alder double-cutaway body design for bridge assembly with an integrated spring vibrato mechanism (called a synchronized tremolo by Fender, thus beginning a confusion of the terms that still continues), three single-coil pickups, and body comfort contours. Leo Fender is also credited with developing the first commercially successful electric bass guitar called the Fender Precision Bass, introduced in 1951.

[edit] Vox

In 1962 Vox introduced the pentagonal Phantom guitar, originally made in England but soon after made by Alter EKO of Italy. It was followed a year later by the teardrop-shaped Mark VI, the prototype of which was used by Brian Jones of The Rolling Stones, and later Johnny Thunders of the New York Dolls. Vox guitars also experimented with onboard effects and electronics. In the mid 1960s, as the sound of electric 12-string guitars became popular, Vox introduced the Phantom XII and Mark XII electric 12-string guitars as well as the Tempest XII which employed a more conventional Fender style body and thus is often overlooked as a Vox classic from the Sixties. The few that were manufactured also came from Italy. Vox also produced other traditional styles of 6- and 12-string electric guitars in both England and Italy, The 12-string electric guitars had a much larger neck and body and averaged at the weight of 26.4 pounds(11.9 kg), they were also played on tables such as a piano or other sit down instrument.

[edit] Construction

Legend: 1. Headstock: 1.1 machine heads; 1.2 truss rod cover; 1.3 string guide; 1.4 nut.
2. Neck: 2.1 fretboard; 2.2 inlay fret markers; 2.3 frets; 2.4 neck joint.
3. Body; 3.1 "neck" pickup; 3.2 "bridge" pickup; 3.3 saddles; 3.4 bridge; 3.5 fine tuners; 3.6 tremolo arm; 3.7 pickup selector switch; 3.8 volume and tone control knobs; 3.9 output connector; 3.10 strap buttons.
4. Strings: 4.1 bass strings 4.2 treble strings.
While guitar construction has many variations, in terms of the materials used for the body, the shape of the body, and the configuration of the neck, bridge, and pickups, there are features which are found in almost every guitar. The photo below shows the different parts of an electric guitar. The headstock (1) contains the metal machine heads, which are used for tuning ; the nut (1.4), a thin fret-like strip of metal or plastic which the strings pass over as they first go onto the fingerboard; the machine heads (1.1), which are worm gears which the player turns to change the string tension and thus adjust the tuning; the frets (2.3), which are thin metal strips which stop the string at the correct pitch when a string is pressed down against the fingerboard; the truss rod (1.2), a metal cylinder used for adjusting the tension on the neck (not found on all instruments); decorative inlay (2.2), a feature not found on lower-cost instruments.
The neck and the fretboard (2.1) extend from the body; at the neck joint (2.4), the neck is either glued or bolted to the body; the body (3) of this instrument is made of wood which is painted and lacquered, but some guitar bodies are also made of polycarbonate or other materials; pickups (3.1, 3.2), which are usually magnetic pickups, but which may also be piezoelectric transducer pickups; the control knobs (3.8) for the volume and tone potentiometers; a fixed bridge (3.4) -on some guitars, a spring-loaded hinged bridge called a "tremolo system" is used instead, which allows players to "bend" notes or chords down in pitch or perform a vibrato embellishment; and a plastic pickguard, a feature not found on all guitars, which is used to protect the body from scratches.
The wood that the body (3) is made of is a very disputed subject considered by some to largely determine the sonic qualities of the guitar, while others believe that the sonic difference in a solid body guitar is very subtle between woods. In acoustic and archtop guitars there is a more pronounced sonic definition caused by the type of wood used. Typical woods include alder (brighter, but well rounded), swamp ash (similar to alder, but with more pronounced highs and lows), mahogany (dark, bassy, warm), poplar (similar to alder) and basswood (very neutral). Maple, a very bright tonewood, is also a popular body wood, but is very heavy. For this reason it is often placed as a 'cap' on a guitar made of primarily of another wood. Cheaper guitars are often made of cheaper woods, such as plywood, pine or agathis, not true hardwoods, which can affect the durability and tone of the guitar.

[edit] Pickups

Compared with an acoustic guitar, which has a hollow body, electric guitars make comparatively little audible sound simply by having their strings plucked, and so electric guitars are normally plugged into a guitar amplifier, which makes the sound louder. When an electric guitar is strummed, the movement of the strings generates (i.e., "induces") a very small electrical current in the magnetic pickups, which are magnets wrapped with coils of very fine wire. That current is then sent through a cable to a guitar amplifier.[11] The current induced is proportional to such factors as the density of the string or the amount of movement over these pickups. That vibration is, in turn, affected by several factors, such as the composition and shape of the body.
A close-up of the pickups on a Fender Squier "Fat Strat" guitar; on the left is a "humbucker" pickup and on the right are two single-coil pickups.
Some "hybrid" electric-acoustic guitars are equipped with additional microphones or piezoelectric pickups (transducers) that sense mechanical vibration from the body. Because in some cases it is desirable to isolate the pickups from the vibrations of the strings, a guitar's magnetic pickups will sometimes be embedded or "potted" in epoxy or wax to prevent the pickup from having a microphonic effect.
Because of their natural inductive qualities, all magnetic pickups tend to pick up ambient and usually unwanted electromagnetic noises. The resulting noise, the so-called "hum", is particularly strong with single-coil pickups, and aggravated by the fact that very few guitars are correctly shielded against electromagnetic interference. The most frequent cause is the strong 50 or 60 Hz component that is inherent in the generation of electricity in the local power transmission system. As nearly all amplifiers and audio equipment associated with electrical guitars rely on this power, there is in theory little chance of completely eliminating the introduction of unwanted hum.
Double-coil or "humbucker" pickups were invented as a way to reduce or counter the unwanted ambient hum sounds (known as 60 cycle hum). Humbuckers have two coils of opposite magnetic and electric polarity. This means that electromagnetic noise hitting both coils should cancel itself out. The two coils are wired in phase, so the signal picked up by each coil is added together. This creates the richer, "fatter" tone associated with humbucking pickups. Optical pickups [12] are a type of pickup which sense string and body vibrations using infrared LED light.

[edit] Tremolo arms

Some electric guitars have a vibrato arm (sometimes called a "whammy bar" or incorrectly[citation needed] "tremolo bar" and occasionally abbreviated as trem), a lever attached to the bridge which can slacken or tighten the strings temporarily, changing the pitch, thereby creating a vibrato or a portamento effect. Early vibrato systems, such as the Bigsby vibrato tailpiece, tended to be unreliable and cause the guitar to go out of tune quite easily, and also had a limited range. Later Fender designs were better, but Fender held the patent on these, so other companies used Bigsby-style vibrato for many years.
Detail of a Squier-made Fender Stratocaster. Note the vibrato arm, the 3 single-coil pickups, the volume and tone knobs.
With the expiration of the Fender patent on the Stratocaster-style vibrato, various improvements on this type of internal, multi-spring vibrato system are now available. Floyd Rose introduced one of the first improvements on the vibrato system in many years when in the late 1970s he began to experiment with "locking" nuts and bridges which work to prevent the guitar from losing tuning even under the most heavy whammy bar acrobatics.

[edit] Guitar necks

Electric guitar necks can vary according to composition as well as shape. The primary metric used to describe a guitar neck is the scale, which is the overall length of the strings from the nut to the bridge. A typical Fender guitar uses a 25.5 inch scale, while Gibson uses a 24.75 inch scale in their Les Paul. While Gibson's scale has often claimed to be 24.75", it has varied through the years by as much as a half inch. The frets are placed proportionally according to the scale length; thus, the smaller the scale, the tighter the spacing of the frets.
Necks are described as bolt-on, set-in, or neck-through depending on how they are attached to the body. Set-in necks are glued to the body in the factory, and are said to have a warmer tone and greater sustain; this is the most traditional type of joint. Bolt-on necks were pioneered by Leo Fender to facilitate easy adjustment and replacement of the guitar neck. Neck-through instruments extend the neck itself to form the center of the guitar body, and are known for long sustain and for being particularly sturdy. While a set neck can be carefully unglued by a skilled luthier, and a bolt-on neck can simply be unscrewed, a neck-through design is difficult or even impossible to repair, depending on the damage. Historically, the bolt-on style has been more popular for ease of installation and adjustment; since bolt-on necks can be easily removed, there is an after-market in replacement bolt-on necks from companies such as Warmoth and Mighty Mite. Some instruments, notably most Gibson models, have continued to use set/glued necks. Neck-through bodies are somewhat more common in bass guitars.
The materials used in the manufacture of the neck have great influence over the tone of the instrument. Hardwoods are very much preferred, with maple, ash, and mahogany topping the list. The neck and fingerboard can be made from different materials, such as a maple neck with a rosewood fingerboard. In the 1980s, exotic man-made materials such as graphite began to be used, but are pricey and never have replaced wood in production instruments. Such necks can be retrofitted to existing bolt-on instruments.
There are several different neck shapes used on guitars, including shapes known as C necks, U necks, and V necks. These refer to the cross-sectional shape of the neck (especially near the nut). There are also several sizes of fret wire available, with traditional players often preferring thin frets, and metal shredders liking thick frets. Thin frets are considered better for playing chords, while thick frets allow lead guitarists to bend notes with less effort. An electric guitar with a neck which folds back called the "Foldaxe" was designed and built for Chet Atkins by Roger Field (featured in Atkins' book "Me and My Guitars."). Steinberger guitars developed a line of exotic instruments without headstocks, with tuning done on the bridge instead.

[edit] Sound and effects

While an acoustic guitar's sound is largely dependent on the vibration of the guitar's body and the air within it, the sound of an electric guitar is largely dependent on a magnetically induced electrical signal, generated by the vibration of metal strings near sensitive pickups. The signal is then "shaped" on its path to the amplifier by using a range of effect devices or circuits that modify the tone and characteristics of the signal. The most basic sound-shaping circuitry are the volume control (potentiometer), tone control (which "rolls off" the treble frequencies), and the pick-up selectors which are found on most electric guitars, and the gain and tone (usually consisting of at least bass and treble) controls on the guitar amplifier.
In the 1960s, some guitarists began exploring a wider range of tonal effects by distorting the sound of the instrument. To do this, they increased the gain, or volume, of the preamplifier, which produced a "fuzzy" sound. This effect is called "clipping" by sound engineers, because when viewed with an oscilloscope, the wave forms of a distorted signal appear to have had their peaks "clipped" off. This was not actually a new development in the instrument, but rather a shift of aesthetics. This sound was not generally recognized previously as desirable. In the 1960s, the tonal palette of the electric guitar was further modified by introducing an effects box in its signal path. Traditionally built in a small metal chassis with an on/off foot switch, such "stomp boxes" have become an important part of the electric guitar tone in many genres. Typical effects include stereo chorus, fuzz, wah-wah and flanging, compression/sustain, delay, reverb, and phase shift. Not all special effects are electronic; in 1967, guitarist Jimmy Page of The Yardbirds and Led Zeppelin created unusual, psychedelic sound effects by playing the electric guitar using a violin bow with a delay pedal and wah pedal
A Boss "stomp-box"-style distortion pedal in use.
In the 1970s, as effects pedals proliferated, their sounds were combined with tube distortion at lower, more controlled volumes by using power attenuators such as Tom Scholz' Power Soak as well as re-amplified dummy loads such as Eddie Van Halen's use of a variac, power resistor, post-power-tube effects, and a final solid-state amp driving the guitar speakers. A variac is one approach to power-supply based power attenuation, to make the sound of power-tube distortion more practically available.
By the 1980s and 1990s, digital and software effects became capable of replicating the analog effects used in the past. These new digital effects attempted to model the sound produced by analog effects and tube amps, to varying degrees of quality. There are many free guitar effects computer programs for computers that can be downloaded via the Internet. Now, computers with sound cards can be used as digital guitar effects processors. Although digital and software effects offer many advantages, many guitarists still use analog effects.
In 2002, Gibson announced the first digital guitar, which performs analog-to-digital conversion internally. The resulting digital signal is delivered over a standard Ethernet cable, eliminating cable-induced line noise. The guitar also provides independent signal processing for each individual string. Also, in 2003 amp maker Line 6 released the Variax guitar. It differs in some fundamental ways from conventional solid-body electrics. For example it uses piezoelectric pickups instead of the conventional electromagnetic ones, and has an on-board computer capable of modifying the sound of the guitar to model the sound of many instruments.

[edit] Extended playing techniques

The sound of a guitar is not only adapted by electronic sound effects, but also heavily by all kinds of new techniques developed or becoming possible in combination with the electric amplification. This is called extended technique. Famous extended techniques are the use of the tremolo, as mentioned above, playing harmonics, palm muting, shred guitar, tapping, pinch harmonic, dive bomb. These are all common techniques mainly used in hard rock and heavy metal. Also other techniques exist, such as playing with audio feedback and alternate tunings. Sometimes guitars are even adapted with extra modifications to alter the sound, examples: usage of the slide, prepared guitar and 3rd bridge.

[edit] Types

[edit] Solid body

Solid body electric guitars have no hollow internal cavity to accommodate vibration and no sound holes such as those used to amplify string vibrations in acoustic guitars. Solid body instruments are generally made of hardwood with a lacquer coating and have six steel strings. The wood is dried for 3 to 6 months in heated storage before being cut to shape. The sound that is audible in music featuring electric guitars is produced by pickups on the guitar that convert the string vibrations into an electrical signal. The signal is then fed to an amplifier (or amp) and speaker.
One of the first solid body guitars was invented by Les Paul. Gibson did not present their 'Les Paul' guitar prototypes to the public, as they did not believe it would catch on. The first mass-produced solid-body guitar was Fender's Broadcaster (later to become the 'Telecaster') first made in 1948, five years after Les Paul made his prototype. The Gibson Les Paul appeared soon after to compete with the Broadcaster.[13]

[edit] String-through body

When discussing electric guitar construction, the term string-through body is used to describe a type of solid body electric guitar body in which the strings are threaded through holes drilled into the bottom of the guitar body. The strings are typically held in place using metal ferrules screwed or glued into the holes.
The advantages of a string-through body mostly relate to improvements in a guitar's sustain and timbre. However, this type of body also significantly increases the tension placed on the strings[citation needed], which can cause wear or bowing on the guitar neck over time. It is also by nature impossible to install a tremolo arm on a string-through body.
Examples of string-through bodies on guitars include the Fender Telecaster Thinline and Telecaster Deluxe.

[edit] Semi-acoustic


An Epiphone brand semi-acoustic hollow-body guitar.
These guitars have a hollow body and electronic pickups mounted on its body. They work in a similar way to solid body electric guitars except that because the hollow body also vibrates, the pickups convert a combination of string and body vibration into an electrical signal. A variant form, the semi-hollow body guitar, strikes a balance between the characteristics of solid-body and hollow-body guitars. Advocates of semi-hollow-body guitars[who?] argue that they have greater resonance and sustain than true solid-body guitars,[14][not in citation given] as well as lighter overall weight. Typically, a semi-hollow body guitar will have a form factor more similar to a solid-body electric guitar, and may include two sound holes, one, or none.
A number of metal-bodied guitars have worked with the unique acoustic/sustaining qualities of metal. These are not hollow-bodied guitars, like a blues steel-bodied guitar, although most are chambered for weight; instead, these metal-bodied guitars are built to play as a solid wood body. Several metal bodies were made in the 1950s by violin and cello makers. In the 1970s, John Veleno made a polished aluminum guitar. Liquid Metal Guitars makes a metal body guitar made out of a solid block of aluminum and then chrome or gold-plates the instrument. Many guitars otherwise sold as solid-bodied instruments, such as the Gibson Les Paul or the PRS Singlecut, are built with "weight relief" holes bored into the body which affect the sound of the instrument[15]. The Les Paul Supreme edition is currently described by the manufacturer as a "chambered" instrument, with a weight relief system designed to positively affect the sound.

[edit] Electric acoustic

Some steel-string acoustic guitars are fitted with pickups purely as an alternative to using a separate microphone. They may also be fitted with a piezo-electric pickup under the bridge, attached to the bridge mounting plate, or with a low mass microphone (usually a condenser mic) inside the body of the guitar that will convert the vibrations in the body into electronic signals, or even combinations of these types of pickups, with an integral mixer/preamp/graphic equalizer. These are called electric acoustic guitars, and are regarded as acoustic guitars rather than electric guitars because the pickups do not produce a signal directly from the vibration of the strings, but rather from the vibration of the guitar top or body. These should not be confused with semi-acoustic guitars, which have pickups of the type found on solid body electric guitars.

[edit] String, bridge, and neck variants

Although rare, the one-string guitar is sometimes heard, particularly in Delta blues, where improvised folk instruments were popular in the 1930s and 1940s. Eddie "One String" Jones had some regional success with a Mississippi blues musician Lonnie Pitchford played a similar, homemade instrument. In a more contemporary style, Little Willie Joe, the inventor of the Unitar, had a rhythm and blues instrumental hit in the 1950s with "Twitchy", recorded with the Hall Orchestra. The best-known exponent of the four-string guitar, often called the tenor guitar was Tiny Grimes, who played on 52nd Street with the beboppers and played a major role in the Prestige Blues Swingers. Grimes' guitar omitted the bottom two strings. Deron Miller of CKY only uses four strings, but plays a six string guitar with the two highest strings removed. Many banjo players use this tuning: DGBE, mostly in Dixieland. Guitar players find this an easier transition than learning plectrum or tenor tuning.

[edit] Seven-string

Most Seven-string guitars add a low "B" string below the low "E". Both electric and classical guitars exist designed for this tuning. A high "A" string above the high "E" instead of the low "B" is sometimes used. Another less common seven-string arrangement is a second G string situated beside the standard G string and tuned an octave higher, in the same manner as a twelve-stringed guitar (see below). Jazz guitarists using a seven-string include veteran jazz guitarists George Van Eps, Bucky Pizzarelli and his son John Pizzarelli.
Seven-string electric guitars were popularized among rock players in the 1980s by Steve Vai. Along with the Japanese guitar company Ibanez, Vai created the Universe series seven string guitars in the 1980s, with a double locking tremolo system for a seven string guitar. These models were based on Vai's six string signature series, the Ibanez Jem. Seven-string guitars experienced a resurgence in popularity in the 2000s, championed by Slayer, KoRn, Fear Factory, Strapping Young Lad, Nevermore, and other hard rock/metal bands. Metal musicians often prefer the seven-string guitar for its extended lower range. The seven-string guitar has also played an essential role in progressive rock, and is commonly used in bands such as Dream Theater and by experimental guitarists such as Ben Levin.

[edit] Eight and nine-string

Eight-string electric guitars are rare, but not unused. One is played by Charlie Hunter (manufactured by Novax Guitars). The largest manufacturer of 8- to 14-strings is Warr Guitars. Their models are used by Trey Gunn (ex King Crimson) who has his own signature line from the company. Also, Mårten Hagström and Fredrik Thordendal of Meshuggah used 8-string guitars made by Nevborn Guitars and now guitars by Ibanez. Munky of nu metal band KoRn is also known to use seven-string Ibanez guitars and it is rumored that he is planning to release a K8 eight-string guitar similar to his K7 seven-string guitar. Stephen Carpenter of Deftones also switched from 7 to 8 string in 2008 and released his signature STEF B-8 with ESP Guitars. In 2008 Ibanez released the Ibanez RG2228-GK which is the first mass produced eight-string guitar. Jethro Tull's first album uses a nine-string guitar on one track. Minarik Guitars manufactures the "Inferno V" 9 stringed guitar that has the top three strings doubled up with strings that are an octave higher, like 12 stringed guitars. Bill Kelliher, guitarist for the heavy metal group Mastodon, worked with First Act on a custom mass-produced nine-string guitar.
Andy Woodd from NZ Metal band Cripple Mr Onion uses his own custom designed 8 string. This gives Cripple Mr Onions albums their distinct sound.

[edit] Ten-string

B.C.Rich manufacture a ten-string six-course electric guitar known as the Bich, whose radical shape was specifically designed to allow the machine heads for the four secondary strings to be positioned on the body, avoiding the head-heaviness of many electric twelve-string guitars. However many players bought it for the body shape or electrics and simply removed the extra strings. The company recognized this and released six-string models of the Bich, but ten-string models also remain in production.
In October 2008, a ten-string electric jazz guitar by Mike Shishkov was demonstrated at the 3rd International Ten String Guitar Festival. This instrument was based on the ten-string extended-range classical guitar.

[edit] Twelve-string

Twelve string electric guitars feature six pairs of strings, usually with each pair tuned to the same note. The extra E, A, D, and G strings add a note one octave above, and the extra B and E strings are in unison. The pairs of strings are played together as one, so the technique and tuning are the same as a conventional guitar, although creating a much fuller tone. They are used almost solely to play harmony and rhythm. They are relatively common in folk rock music. Lead Belly is the folk artist most identified with the twelve-string guitar, usually acoustic with a pickup.
George Harrison of The Beatles and Roger McGuinn of The Byrds brought the electric twelve-string to notability in rock and roll. During the Beatles' first trip to the US, in February 1964, Harrison received a new "360/12" model guitar from the Rickenbacker company, a 12-string electric made to look onstage like a 6-string. He began using the 360 in the studio on Lennon's "You Can't Do That" and other songs. Roger McGuinn began using electric 12-string guitars to create the jangly sound of The Byrds. Another notable guitarist to utilize electric 12-string guitars is Jimmy Page, the guitarist with hard rock-heavy metal and rock group Led Zeppelin.

[edit] 3rd bridge

The 3rd bridge guitar is an electric prepared guitar with an additional 3rd bridge. This can be a normal guitar with for instance a screwdriver placed under the strings, but can also be a custom made instrument. Lee Ranaldo of Sonic Youth plays with a 3rd bridge.

[edit] Double neck guitar

Double neck (or, less commonly, "twin-neck") guitars enable guitarists to play guitar and bass guitar or, more commonly, a six-string and twelve-string. An early user was John McLaughlin, but the double-neck guitar was popularized by Jimmy Page, who used a custom-made Gibson EDS-1275 to perform the "Stairway to Heaven" and "The Song Remains the Same". Don Felder also used the Gibson EDS-1275 during the Hotel California tour. The Famous guitarist Slash from the legendary Guns n' Roses had one and called it Godzilla, for it's monstrous size and green scale look.

[edit] Uses

[edit] Popular music

Popular music and rock groups often use the electric guitar in two roles: as a rhythm guitar which provides the chord sequence or "progression" and sets out the "beat" (as part of a rhythm section), and a lead guitar, which is used to perform melody lines, melodic instrumental fill passages, and guitar solos. In some rock or metal bands with two guitarists, the two performers may perform as a guitar tandem, and trade off the lead guitar and rhythm guitar roles. In bands with a single guitarist, the guitarist may switch between these two roles, playing chords to accompany the singer's lyrics, and then playing a guitar solo in the middle of the song.
In the most commercially available and consumed pop and rock genres, electric guitars tend to dominate their acoustic cousins in both the recording studio and the live venue, especially in the "harder" genres such as heavy metal and hard rock. However the acoustic guitar remains a popular choice in country, western and especially bluegrass music, and it is widely used in folk music.

[edit] Jazz and jazz fusion

Jazz guitar playing styles include rhythm guitar-style "comping" (accompanying) with jazz chord voicings (and in some cases, walking basslines) and "blowing" (improvising solos) over jazz chord progressions with jazz-style phrasing and ornaments. The accompanying style for electric guitar in most jazz styles differs from the way chordal instruments accompany in many popular styles of music. In rock and pop, the rhythm guitarist usually performs the chords in rhythmic fashion which sets out the beat of a tune. In contrast, in many modern jazz styles, the guitarist plays much more sparsely, intermingling periodic chords and delicate voicings into pauses in the melody or solo. Jazz chord voicings are usually rootless and emphasize the 3rd and 7th notes of the chord.
When jazz guitar players improvise, they use the scales, modes, and arpeggios associated with the chords in a tune's chord progression. Jazz guitarists have to learn how to use scales (whole tone scale, chromatic scale, etc.) to solo over chord progressions. Jazz guitar improvising is not merely the recitation of jazz scales and rapid arpeggios. Jazz guitarists often try to imbue their melodic phrasing with the sense of natural breathing and legato phrasing used by horn players such as saxophone players. As well, a jazz guitarists' solo improvisations have to have a rhythmic drive and "time feel" that creates a sense of "swing" and "groove".
Most jazz guitarists play hollow body instruments, but solid body guitars are also used. Hollow body instruments were the first guitars used in jazz in the 1930s and 1940s. During the 1970s jazz fusion era, many jazz guitarists switched to the solid body guitars that dominated the rock world.

[edit] Contemporary classical music

Until the 1950s, the acoustic, nylon-stringed classical guitar was the only type of guitar favored by classical, or art music composers. In the 1950s a few contemporary classical composers began to use the electric guitar in their compositions. Examples of such works include Karlheinz Stockhausen's Gruppen (1955-57); Donald Erb's String Trio (1966), Morton Feldman's The Possibility of a New Work for Electric Guitar (1966); George Crumb's Songs, Drones, and Refrains of Death (1968); Hans Werner Henze's Versuch über Schweine (1968); Francis Thorne's Sonar Plexus (1968) and Liebesrock (1968–69), Michael Tippett's The Knot Garden (1965-70); Leonard Bernstein's MASS (1971) and Slava! (1977); Louis Andriessen's De Staat (1972-76); Steve Reich's Electric Counterpoint (1987), Arvo Pärt's Miserere (1989/92), and countless works composed for the quintet of Ástor Piazzolla.
In the 1980s and 1990s, a growing number of composers (many of them composer-performers who had grown up playing the instrument in rock bands) began writing contemporary classical music for the electric guitar. These include Shawn Lane, Steven Mackey, Nick Didkovsky, Scott Johnson, Lois V Vierk, Tim Brady, Tristan Murail, John Rogers, and Randall Woolf.
Yngwie Malmsteen released his Concerto Suite for Electric Guitar and Orchestra in 1998, and Steve Vai released a double-live CD entitled Sound Theories, of his work with the Netherlands Metropole Orchestra in June 2007.[16] The American composers Rhys Chatham and Glenn Branca have written "symphonic" works for large ensembles of electric guitars, in some cases numbering up to 100 players, and the instrument is a core member of the Bang on a Can All-Stars (played by Mark Stewart). Still, like many electric and electronic instruments, the electric guitar remains primarily associated with rock and jazz music, rather than with classical compositions and performances.[17] R. Prasanna plays a style of Indian classical music (Carnatic music) on the electric guitar.
In the 21st century, European avantgarde composers like Richard Barrett, Fausto Romitelli and Karlheinz Essl used the electric guitar (together with extended playing techniques) in solo pieces or ensemble works.

[edit] See also


sumber:http://en.wikipedia.org/wiki/Electric_guitar