Journal
HEARING RESEARCH
Volume 266, Issue 1-2, Pages 36-51Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.heares.2009.09.012
Keywords
Auditory scene analysis; Harmonicity; Fundamental frequency; Pitch; Complex tones; Double vowels; Mistuned harmonic
Funding
- NIDCD [R01 DC05216]
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Harmonic complex tones are a particularly important class of sounds found in both speech and music. Although these sounds contain multiple frequency components, they are usually perceived as a coherent whole, with a pitch corresponding to the fundamental frequency (F0). However, when two or more harmonic sounds occur concurrently, e.g., at a cocktail party or in a symphony, the auditory system must separate harmonics and assign them to their respective F0s so that a coherent and veridical representation of the different sounds sources is formed. Here we review both psychophysical and neurophysiological (single-unit and evoked-potential) findings, which provide some insight into how, and how well, the auditory system accomplishes this task. A survey of computational models designed to estimate multiple F0s and segregate concurrent sources is followed by a review of the empirical literature on the perception and neural coding of concurrent harmonic sounds, including vowels, as well as findings obtained using single complex tones with mistuned harmonics. (C) 2009 Elsevier B.V. All rights reserved.
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