Timbre

In music, timbre (French, IPA /'tæmb?r/ as in the first two syllables of tambourine) is the quality of a musical note or sound which distinguishes different types of sound production or musical instruments. The physical characteristics of sound which are used in the determination of timbre are spectrum and envelope with psychoacoustics or human perception also determining the perceived quality of a sound. Timbre is what, with a little practice, people use to pick out the saxophone from the trumpet in a jazz group or the flute from the violin in an orchestra, even if they are playing notes at the same pitch and amplitude (or notes which are otherwise equal). Timbre has been called the psychoacoustician's waste-basket as it can include so many factors.

Attributes

J.F. Schouten (1968, p.42) describes the "elusive attributes of timbre" as "determined by at least five major acoustic parameters" which Robert Erickson (1975) finds "scaled to the concerns of much contemporary music":

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• "The range between tonal and noiselike character.
• The spectral envelope.
• The time envelope in terms of rise, duration, and decay.
• The changes both of spectral envelope (formant-glide) and fundamental frequency (micro-intonation).
• The prefix, an onset of a sound quite dissimilar to the ensuing lasting vibration."