The pitch of a periodic tone depends on its fundamental frequency (F0), and the brightness of its timbre depends on the centroid of its power spectrum (Fc). The goal of the present study was to determine whether small shifts in F0 and in Fc are detected independently of each other. The standard tone used had an F0 of 400 Hz, five harmonics (400-2000 Hz), and a triangular spectral envelope peaking at an Fc of 1000 Hz. With a forced-choice adaptive procedure, detection thresholds were measured for (1) shifts in F0 alone (Fc being fixed), (2) shifts in Fc alone (F0 being fixed), and (3) combined shifts in F0 and Fc. The two components of the combined shifts were chosen to have the same level of detectability when presented alone. Overall, as expected from the independence model, the combined shifts were not better detected when their two components had the same direction (F0 and Fc both increase, or both decrease) than when they had opposite directions. However, substantial differences between subjects were observed with respect to the perceptual integration of shifts in F0 and in Fc.

References

References
Crowder, R.G. Imagery for musical timbre. Journal of Experimental Psychology: Human Perception and Performance, 1989, 15, 472-478.
Gagné, J.P., & Zurek, P.M. Resonance frequency discrimination. Journal of the Acoustical Society of America, 1988, 83, 2293-2299.
Green, D.M. Profile analysis: Auditory intensity discrimination. Oxford: Oxford Univer- sity Press, 1988.
Green, D.M., & Swets, J.A. Signal detection theory and psychophysics, 2nd ed. Hunting- ton, NY: Krieeer, 1974.
Horst, J.W., Ritsma, R.J., & Wit, H.P. Frequency discrimination in quiet and in noise for signals with triangular spectral envelopes. Journal of the Accoustical Society of Amer- ica, 1984, 76, 1067-1075.
Kaernbach, C. Simple adaptive testing with the weighted up-down method. Perception and Psychophysics, 1991, 49, 227-229.
Krumhansl, C.L., & Iverson, P. Perceptual interactions between musical pitch and timbre. Journal of Experimental Psychology: Human Perception and Performance, 1992, 18, 739-751.
Melara, R.D., & Marks, L.E. Perceptual primacy of dimensions: Support for a model of dimensional interaction. Journal of Experimental Psychology: Human Perception and Performance, 1990, 16, 398-414.
Moore, B.C.J., & Glasberg, B.R. Frequency discrimination of complex tones with overlap- ping and non-overlapping harmonics. Journal of the Acoustical Society of America, 1990, 87, 2163-2177.
Moore, B.C.J., Glasberg, B.R., & Proctor, G.M. Accuracy of pitch matching for pure tones and for complex tones with overlapping or nonoverlapping harmonics. Journal of the Acoustical Society of America, 1992, 91, 3443-3450.
Ohgushi, K. Circularity of the pitch of complex tones and its application. Electronics and Communication in Japan, 1985, 68, 1-10.
Patterson, R.D. A pulse ribbon model of monaural phase perception. Journal of the Acous- tical Society of America, 1987, 82, 1560-1586.
Plomp, R. Aspects of tone sensation. London: Academic Press, 1976.
Plomp, R., & Steeneken, H.J.M. Pitch versus timbre. Proceedings of the Seventh Interna- tional Congress on Acoustics, Budapest, 1971, 3, 377-380.
Risset, J.C. Paradoxes de hauteur: Le concept de hauteur sonore n'est pas le même pour tout le monde. Proceedings of the Seventh International Congress on Acoustics, Buda- pest, 1971, paper 20 S 10, 613-616.
Semai, C, & Demany, L. Dissociation of pitch from timbre in auditory short-term memory. Journal of the Acoustical Society of America, 1991, 89, 2404-2410.
Singh, P.G., & Hirsh, I.J. Influence of spectral locus and F0 changes on the pitch and timbre of complex tones. Journal of the Acoustical Society of America, 1992, 92, 2650-2661.
Slawson, À.W. Vowel quality and musical timbre as functions of spectrum envelope and fundamental frequency. Journal of the Acoustical Society of America, 1968, 43, 87-101.
Smoorenburg, G.F. Pitch perception of two-frequency stimuli. Journal of the Acoustical Society of America, 1970, 48, 924-942.
Stevens, K.N. Frequency discrimination for damped waves. Journal of the Acoustical Soci- ety of America, 1952, 24, 76-79.
Ueda, K., & Ohgushi, K. Perceptual components of pitch: Spatial representation using a multidimensional scaling technique. Journal of the Acoustical Society of America, 1987, 82, 1193-1200.
This content is only available via PDF.