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Brightness affecting pitch

I have run into this phenomenon several times -- where the spectral
locus of components in a complex (correlated with timbral "sharpness" or
"brightness") affects judgments of pitch.

For details re: pitch discrimination affected by changes in spectral
locus, see:
        Singh, P.G. and Hirsh, I.J. (1992)  "Influence of spectral locus
and F0 changes on the pitch and timbre of complex tones", J. Acoust.
Soc. Am., 92(5), 2650-2661.

For interactions between brightness and pitch observed in a sequential
grouping context, see:
        Singh, P.G. (1987) "Perceptual organization of complex-tone
sequences: A tradeoff between pitch and timbre?"

Both these papers contain other relevant references as well.

Another reference which comes to mind, is a chapter by  Hesse on
judgment of musical intervals in the book "Music, mind and brain"
Manfred Clynes (ed.), Plenum, 1983-- which showed some interaction
between pitch judgments and brightness.

My 1990 Ph. D. dissertation from Washington University, St. Louis,  on
"Perceptual correlates of spectral changes in complex tones" also
contains several references on this topic (prior to 1990) !

----- Punita

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