Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models.

Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Research Abstract Details 

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Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Abstract Text:

Matthew J Goupell,William M Hartmann,

In the first two articles of this series, reproducible noises with a fixed value of interaural coherence (0.992) were used to study the human ability to detect interaural incoherence. It was found that incoherence detection is strongly correlated with fluctuations in interaural differences, especially for narrow noise bandwidths, but it remained unclear what function of the fluctuations best agrees with detection data. In the present article, ten different binaural models were tested against detection data for 14- and 108-Hz bandwidths. These models included different types of binaural processing: independent-interaural-phase-difference/interaural-level-difference, lateral-position, and short-term cross-correlation. Several preprocessing transformations of the interaural differences were incorporated: compression of binaural cues, temporal averaging, and envelope weighting. For the 14-Hz bandwidth data, the most successful model postulated that incoherence is detected via fluctuations of interaural phase and interaural level processed by independent centers. That model correlated with detectability at r=0.87. That model proved to be more successful than short-term cross-correlation models incorporating standard physiologically-based model features (r=0.78). For the 108-Hz bandwidth data, detection performance varied much less among different waveforms, and the data were less able to distinguish between models.

Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Publishing Authors By Initials

MJ Goupell,WM Hartmann,

For similar psychological phenomena and processes: mental processes: perception: auditory perception: sound localization research abstracts see: psychological phenomena and processes: mental processes: perception: auditory perception: sound localization research

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Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of the Acoustical Society of America

VOLUME: 122

Page Numbers: 1029-45

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 3

MONTH: Aug

YEAR: 2007

Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models. Keywords Mesh Terms:

KEYWORDS: Sound Localization

MESH TERMS: physiology

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Grant and Affiliation Information for Interaural fluctuations and the detection of interaural incoherence. III. Narrowband experiments and binaural models.

AFFILIATION: Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA. goupell@kfs.oeaw.ac.at

Country: United States

AGENCY: United States NIDCD

GRANT: DC00181

ACRONYM: DC

MEDLINETA: J Acoust Soc Am

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