| 释义 |
▪ I. mel Acoustics.|mɛl|
[f. melody n.]
A unit of subjective pitch, defined so that the number of mels is proportional to the pitch of a sound, and the pitch of a 1000-hertz note (often, one forty decibels above the listener's threshold of hearing) is 1000 mels.
1937S. S. Stevens et al. in Jrnl. Acoustical Soc. Amer. VIII. 188/1 The numbers on the pitch scale are related to each other as the subjective magnitudes of the pitches. A pitch of 1000 units (mels) is subjectively twice as high as a pitch of 500 units... The name mel was chosen as a name for the subjective pitch unit. 1957J. L. Hunter Acoustics viii. 249 A tone having an apparent pitch twice as high has a pitch of 2,000 mels..regardless of its frequency. 1962P. Ladefoged Elem. Acoustic Phonetics vi. 79 Frequency data about speech sounds are often converted into mel units before being presented graphically. 1966R. L. Suri Acoustics I. ii. 21 The unit of pitch has been given the name ‘mel’ such that the pitch at 1000 cycles is 1000 mels.
▪ II. mel
obs. f. meal; variant of medle, mell. |