Tetrachord

[tetrәkɒ:d]

解释:

(n.) A scale series of four sounds, of which the extremes, or first and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable.

录入:斯蒂芬妮

解释:

n. a series of four sounds forming a scale of two tones and a half.—adj. Tet′rachordal.

录入:莫伊拉