Measuring the critical band for speech

The Journal of the Acoustical Society of America
Eric W Healy, Sid P Bacon

Abstract

The current experiments were designed to measure the frequency resolution employed by listeners during the perception of everyday sentences. Speech bands having nearly vertical filter slopes and narrow bandwidths were sharply partitioned into various numbers of equal log- or ERBN-width subbands. The temporal envelope from each partition was used to amplitude modulate a corresponding band of low-noise noise, and the modulated carriers were combined and presented to normal-hearing listeners. Intelligibility increased and reached asymptote as the number of partitions increased. In the mid- and high-frequency regions of the speech spectrum, the partition bandwidth corresponding to asymptotic performance matched current estimates of psychophysical tuning across a number of conditions. These results indicate that, in these regions, the critical band for speech matches the critical band measured using traditional psychoacoustic methods and nonspeech stimuli. However, in the low-frequency region, partition bandwidths at asymptote were somewhat narrower than would be predicted based upon psychophysical tuning. It is concluded that, overall, current estimates of psychophysical tuning represent reasonably well the ability of listeners to ...Continue Reading

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Citations

Oct 31, 2006·The Journal of the Acoustical Society of America·Erwin L J GeorgeTammo Houtgast
Apr 6, 2007·The Journal of the Acoustical Society of America·Eric W Healy, Sid P Bacon
Jun 6, 2008·The Journal of the Acoustical Society of America·Ewa Jacewicz, Robert Allen Fox
Feb 6, 2018·Journal of Speech, Language, and Hearing Research : JSLHR·Carla L YoungdahlRachael Frush Holt
Mar 13, 2021·Scientific Reports·Duy Duong NguyenCatherine Madill

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