Auditory segregation of competing voices: absence of effects of FM or AM coherence [and discussion]

Summerfield, Quentin, Culling, John Francis ORCID: https://orcid.org/0000-0003-1107-9802 and Fourcin, A. J. 1992. Auditory segregation of competing voices: absence of effects of FM or AM coherence [and discussion]. Philosophical Transactions of the Royal Society of London Series B - Biological Sciences 336 (1278) , pp. 357-366. 10.1098/rstb.1992.0069

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Abstract

Four experiments sought evidence that listeners can use coherent changes in the frequency or amplitude of harmonics to segregate concurrent vowels. Segregation was not helped by giving the harmonics of competing vowels different patterns of frequency or amplitude modulation. However, modulating the frequencies of the components of one vowel was beneficial when the other vowel was not modulated, provided that both vowels were composed of components placed randomly in frequency. In addition, staggering the onsets of the two vowels, so that the amplitude of one vowel increased abruptly while the amplitude of the other was stationary, was also beneficial. Thus, the results demonstrate that listeners can group changing harmonics and can segregate them from stationary harmonics, but cannot use coherence of change to separate two sets of changing harmonics.

Item Type:	Article
Status:	Published
Schools:	Psychology
Publisher:	Royal Society
ISSN:	0962-8436
Last Modified:	18 Oct 2022 13:24
URI:	https://orca.cardiff.ac.uk/id/eprint/13756

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