Tristimulus (audio)
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The concept of tristimulus originates in the world of colour, describing the way three primary colours can be mixed together to create a given colour. By analogy, the musical tristimulus measures the mixture of harmonics in a given sound, grouped into three sections. The first tristimulus measures the relative weight of the first harmonic; the second tristimulus measures the relative weight of the 2nd, 3rd, and 4th harmonics taken together; and the third tristimulus measures the relative weight of all the remaining harmonics.
[edit] References
- G. Peeters (2003) “A large set of audio features for sound description (similarity and classification) in the CUIDADO project”
- HF Pollard, EV Jansson (1982) A Tristimulus Method for the Specification of Musical Timbre. Acustica.
