Na egwu, octave (: asatọ) ma ọ bụ octave zuru oke bụ nkeji n'etiti otu ụda egwu na nke ọzọ nwere ọkara ma ọ bụ okpukpu abụọ ugboro ugboro.
A kọwapụtara ya site na ANSI dị ka nkeji nke ọkwa ugboro mgbe isi nke logarithm bụ abụọ.
Mmekọrịta octave bụ ihe okike nke a na-akpọ "ọrụ ebube bụ isi nke egwu", nke eji ya eme ihe bụ "ọtụtụ n'ime usoro egwu egwu".
A na-eji ndetu asatọ dee ihe akpịrịkpa kachasị mkpa, na etiti dị n'etiti ndetu mbụ na nke ikpeazụ bụ octave.
Dịka ọmụmaatụ, C Major ọnụ ọgụgụ a na-edekarị CDEFGABC, nke mbụ na nke ikpeazụ C bụ octave iche. Ihe ndetu abụọ kewapụrụ site na octave nwere otu aha mkpụrụedemede ma bụrụ otu klaasị pitch.
Ihe atụ atọ a na-ehotakarị nke abụ olu na-egosipụta octave zuru oke ka oge mmeghe ha bụ “Singin' in the Rain”, “Somewhere Over the Rainbow” na “Stranger on the Shore”.
Oge etiti n'etiti harmonics nke mbụ na nke abụọ nke usoro harmonic bụ octave. A na-akpọ octave mgbe ụfọdụ ka diapson.
Iji mesie ike na ọ bụ otu n'ime oge zuru oke (gụnyere otu, nke anọ zuru oke, na nke ise zuru oke), a na-ahọpụta octave P8.
Octave n'elu ma ọ bụ n'okpuru ihe ndetu egosiri bụ mgbe ụfọdụ 8va (= Italian all'ottava), 8va bassa (= Italian all'ottava bassa, mgbe ụfọdụ kwa 8vb), ma ọ bụ nanị 8 maka octave na ntụziaka gosiri site n'itinye akara a n'elu. ma ọ bụ n'okpuru ndị ọrụ.
Abụ m Joost Nusselder, onye nchoputa Neaera na onye na-ere ọdịnaya, nna, ma hụ n'anya ịnwale akụrụngwa ọhụrụ na guitar n'obi oke agụụ m, yana ndị otu m, anọ m na-ekepụta akụkọ blọgụ miri emi kemgbe 2020 iji nyere ndị na-agụ akwụkwọ na-eguzosi ike n'ihe aka na ndekọ na ndụmọdụ guitar.
