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pengertian bunyi

Bunyi adalah bahan terpenting dalam musik. Bunyi berasal dari Sumber bunyi, yang digetarkan oleh tenaga atau energi. Kemudian getaran tersebut oleh pengantar diantarkan atau dipancarkan keluar. Dan bila getaran ini sampai di telinga kita, barulah kita dapat mendengarkannya.
Definisi bunyi adalah gelombang longitudinal hasil dari suatu getaran yang dapat merangsang indra pendengaran. Pandangan bahwa bunyi merambat seperti gelombang air pertama kali dikemukakan oleh Marcus Vitruvins Polio di Romawi, satu abad sebelum Masehi. Teori kuantitatif tentang bunyi pertama kali dikemukakan oleh Sir Isaac Newton.
Intensitas gelombang bunyi yang dapat didengar manusia rata-rata 10-12 watt/ m2, disebut ambang pendegaran. Sementara itu, intensitas terbesar bunyi yang masih terdengar oleh manusia tanpa menimbulkan rasa sakit adalah 1 watt / m+, disebut ambang perasaan.

Sumber bunyi berasal dari benda yang bergetar. Dari sumber bunyi ke telinga
terjadi perambatan enerfi. Gelombang bunyi termasuk gelombang mekanik dan
longitudinal. Gelombang bunyi merambat melalui medium seperti gas, cair atau padat.
Kecepatan perambatan gelombang bunyi di dalam zat padat lebih cepat dibandingkan
dengan kecepatan di dalam gas atau udara. Gelombang bunyi tidak dapat merambat di
dalam ruang hampa. Untuk menentukan kecepatan bunyi di udara dapat digunakan
percobaan resonasi. Bunyi termasuk gelombang longitudinal yang dapat merambat pada
medium padat, cair atau gas.

This entry was posted on Rabu, April 24th, 2013 at 2:21 pm and is filed under Lainnya. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.

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