ʿΧʽաˤ24Ĵ夵Ƥ롣κǸĴϥûĴǤ뤬ûĴȤϲ䡣ϡ֥פβ粻Ȥ롢뤤ϲϲȤȤûǤ롣
ûȤϲȤСХåϤΩβʤĹûǤ롣ĹûȾΰ֤줾㤦Ⱦΰ֤줾㤦Ĺ뤯ûϼ䤷ʤġβˣΰۤʤʤ¸ߤ롣̩˸С12ʿΧξˤƣβˣΰۤʤʤ¸ߤ롣

ȤǥХåϤĹûΩޤǤβڤϤɤǤä϶ˡǤäˡμϰŪˣĤ롣˥ɥꥢեꥮǥߥǥꥢȤĤˡȾΰ֤줾㤦Ⱦΰ֤줾㤦飶β6ʤ¸ߤ뤳Ȥˤʤ롣
ХåϤζˡ򥨥ꥢˡȥ˥ˡ˽󤷡Ĺû˳Ω顢μʤ6फ飲˸ΤǤ롣

ˤ⤫餺ХåϤλĹûϣʰʾΤʤäƤʤ
ХåϤλϸߤ12ʿΧȤϰ㤤ȾۤʤʬΧθ׳ڴȤäƤȾ줾ۤʤΤǡƱûǤ⤽줾ΰۤʤʤ¸ߤߤ12ʿΧˤʤäƤޤäΤǡûϤɤƱʤǤ롣Ĥޤ12ʿѤˤƤĹûĤʤʤ
ߤˤƤ⡢ʬΧĴΧ׳ڴ䡢ʤռԤռŪ12ʿΧ򤱤ƱդǤڴϡƱûĴǤۤʤʤ¸ߤ롣ʬΧդǤ뤳ȤǽǤ뤫餽줾ΰۤʤʤûĴդǤ롣
Ĵʤϡ12ʿΧʬΧʬƹͤ뤳ȤڤǤ롣

ǻȤƤ12ʿΧˤơûĴΡ֥פȤϲȤȡ֥פβĤޤ֥פι⤵βϲȤȤǤ롣
ϤΡ֥פι⤵Ū˾ưƤ뤳ȤǤ롣
֥פβι⤵ȤΤϲȤȡɸԥåФ⤵Ǥ롣
ȥαղ˹ԤȡʳڴռԤa'ᣴǥԥå碌Ƥ뤬440 Hz ɸԥåǤ롣ɸԥåϡ֥פβǼΤǡ֥פβϤ꣱⤤ȤɸԥåǶ445ޤǾ夲Ƥ륪ȥ⤢äưƤ롣ɸԥå夬С֥פβ夬롣
ȿФ˥ХåϤλɸԥåߤȾ㤫äȤȤϥХåϤΡ֥פβϡߤΡ֢פǤ롣ԥåǤäĴСХåϤΥûĴϺѥûĴȸͤФʤʤ
ϲľФï⤬פԥåĴꤹΤϲľФȻפǤ

ȤǤ롣вϡɸ಻440ˤ粻ι⤵ǤäĴȽǤ롣⤷ХåϤλΥԥå˽सƥûĴդСвݻԤˤѥûĴʹ餷򸫤ХûĴʤΤˡˤѥûĴʹΤǵ餷
ϺäǤ롣