「長三度」の版間の差分

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A '''major third''' is the larger of two commonly occurring [[musical interval]]s that span three [[diatonic scale]] degrees. The prefix 'major' identifies it as being the larger of the two (by one [[semitone]]: the Major third is a leap of four [[semitones]], while the minor third leaps three); its smaller counterpart being a [[minor third]]. The major third is abbreviated as '''M3''' and its [[inversion (music)|inversion]] is the [[minor sixth]].
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'''長三度'''(ちょうさんど)は[[全音階]]で現れる2種類の三度の[[音程]]のうちのより広い方である。構成としては楽譜における下の方から長二度と長二度の音程からなる(例: ドとレ、レとミからなるドとミの音程)。「長」の字は2つの三度音程(長三度と短三度)のうちのより広いほうであることを示し、もう一つは短三度と呼ばれる。長三度は4[[半音]]の音程であるのに対して短三度は3半音の音程であり、長三度のほうが1半音音程が広い。長三度は'''M3'''と略記され、その[[{{仮リンク|転回形]]|en|Inversion (music)}}は[[短六度]]である。
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The [[major scale]] is so named because of the presence of this interval between its [[tonic (music)|tonic]] and [[mediant]] (1st and 3rd) [[scale degrees]].
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A major third in [[just intonation]] most often corresponds to a pitch ratio of 5:4 or 1.25:1, or various other ratios, while in an [[:en:equal tempered#Twelve-tone equal temperament|equal tempered]] tuning, a major third is equal to four [[semitone]]s, a ratio of 1:2<sup>4/12</sup> (approximately 1.259), or 400 [[cent (music)|cent]]s, 13.686 cents larger. The older concept of a [[ditone]] (two major seconds=major third) is the [[:en:Pythagorean tuning|pythagorean]] ratio 81:64 (1.2656= 1.125<sup>2</sup>, two major seconds).
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| colspan="7" bgcolor=ccccff|そのほかの音程
|- align=center
| colspan="7" |[[一度]] - [[短二度]] - [[{{仮リンク|長二度]]|en|Major second}} - [[短三度]] - '''長三度''' - [[完全四度]] - [[増四度]] - [[減五度]] - [[完全五度]] - [[短六度]] - [[{{仮リンク|長六度]]|en|Major sixth}} - [[{{仮リンク|短七度]]|en|Minor seventh}} - [[{{仮リンク|長七度]]|en|Major seventh}} - [[八度]]
|}
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==See also==
* [[musicalMusical tuning]]
* [[ditonusDitonus]]
* [[listList of meantone intervals]]
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