Speech intelligibility is best predicted by intensity, not cochlea-scaled entropy

Andrew J. Oxenham; Jeffrey E. Boucher; Heather A. Kreft

doi:10.1121/1.5002149

Speech intelligibility is best predicted by intensity, not cochlea-scaled entropy

Andrew J. Oxenham, Jeffrey E. Boucher, Heather A. Kreft

Psychology (Twin Cities)

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Cochlea-scaled entropy (CSE) is a measure of spectro-temporal change that has been reported to predict the contribution of speech segments to overall intelligibility. This paper confirms that CSE is highly correlated with intensity, making it impossible to determine empirically whether it is CSE or simply intensity that determines speech importance. A more perceptually relevant version of CSE that uses dB-scaled differences, rather than differences in linear amplitude, failed to predict speech intelligibility. Overall, a parsimonious account of the available data is that the importance of speech segments to overall intelligibility is best predicted by their relative intensity, not by CSE.

Original language	English (US)
Pages (from-to)	EL264-EL269
Journal	Journal of the Acoustical Society of America
Volume	142
Issue number	3
DOIs	https://doi.org/10.1121/1.5002149
State	Published - Sep 1 2017

Bibliographical note

Funding Information:
This research was supported by NIH Grant No. R01 DC012262. We thank Ezleen Mustaffa and Cameron Eller for help with data collection.

Publisher Copyright:
© 2017 Acoustical Society of America.

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10.1121/1.5002149

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5724627

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abstract = "Cochlea-scaled entropy (CSE) is a measure of spectro-temporal change that has been reported to predict the contribution of speech segments to overall intelligibility. This paper confirms that CSE is highly correlated with intensity, making it impossible to determine empirically whether it is CSE or simply intensity that determines speech importance. A more perceptually relevant version of CSE that uses dB-scaled differences, rather than differences in linear amplitude, failed to predict speech intelligibility. Overall, a parsimonious account of the available data is that the importance of speech segments to overall intelligibility is best predicted by their relative intensity, not by CSE.",

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Speech intelligibility is best predicted by intensity, not cochlea-scaled entropy

Abstract

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