| On the significance of phase in the short term Fourier spectrum for speech intelligibility. | |
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MedLine Citation:
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PMID: 20329843 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper investigates the significance of the magnitude or the phase in the short term Fourier spectrum for speech intelligibility as a function of the time-window length. For a wide range of window lengths (1/16-2048 ms), two hybrid signals were obtained by a cross-wise combination of the magnitude and phase spectra of speech and white noise. Speech intelligibility data showed the significance of the phase spectrum for longer windows (>256 ms) and for very short windows (<4 ms), and that of the magnitude spectrum for medium-range window lengths. The hybrid signals used in the intelligibility test were analyzed in terms of the preservation of the original narrow-band speech envelopes. Correlations between the narrow-band envelopes of the original speech and the hybrid signals show a similar pattern as a function of window length. This result illustrates the importance of the preservation of narrow-band envelopes for speech intelligibility. The observed significance of the phase spectrum in recovering the narrow-band envelopes for the long term windows and for the very short term windows is discussed. |
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Authors:
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Michiko Kazama; Satoru Gotoh; Mikio Tohyama; Tammo Houtgast |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: 2010-06-17 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1432-9 Citation Subset: IM |
Affiliation:
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Waseda University, 161 Nishi-waseda, Shinjuku-ku, Tokyo 169-8050, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Fourier Analysis* Humans Middle Aged Models, Theoretical* Noise Phonetics* Speech Intelligibility / physiology* Speech Perception / physiology* Young Adult |
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