octave

オクターブ、八度

一方の音の振動数が他方の２倍になる、二つの音の隔たり。

やさしい英語で： The distance between two musical notes when one has twice the sound frequency of the other.

• Sing that note an octave higher.
• Her voice dropped an octave when she spoke.
• The melody covers two octaves.

よく使う表現： an octave higher, an octave lower, span an octave

一オクターブ上の音

ある低い音に対して、振動数が２倍の高い音。

やさしい英語で： A musical note with twice the sound frequency of a particular lower note.

• The tenor sang the octave.
• She played a low C, then its octave.
• The upper octave sounds clearer on this instrument.

使い方： the octave of a note (The flute plays the octave of the bass note.)

よく使う表現： the upper octave, sing the octave, double the octave

オクターブカプラー

押した鍵盤の音に、一オクターブ高い音を加えるオルガンの装置。

やさしい英語で： An organ control that adds a note twice as high as the note of the key pressed.

• The organist engaged the octave.
• Using the octave added brightness to the passage.
• The technician repaired the organ's octave before the concert.

類義語： octave coupler

反対語： sub-octave

よく使う表現： engage the octave, octave coupler, the organ's octave

小型ワイン樽

パイプと呼ばれる大樽の８分の１の量が入る、小さなワイン樽。

やさしい英語で： A small barrel for wine, holding one eighth of the amount in a large barrel called a pipe.

• They rolled an octave into the cellar.
• The merchant ordered an octave of wine.
• Each octave held one eighth as much as a pipe.

よく使う表現： an octave of wine, an oak octave, fill an octave