PMID: 11324840Apr 28, 2001Paper

The contribution of amplitude envelope cues to sentence identification in young and aged listeners

Ear and Hearing
P E Souza, V Kitch

Abstract

The purpose of this study was to examine the importance of amplitude envelope cues to sentence identification for aged listeners. We also examined the effect of increasing alterations (i.e., compression ratio) and amount of available frequency content (i.e., number of channels) for this population. Thirty-six listeners were classified according to their age (35 or younger versus 65 and older) and hearing status (normal hearing versus hearing impaired). Within each hearing status, mean hearing threshold thresholds for the young and aged listeners were matched as closely as possible through 4 kHz to control for sensitivity differences across age, and all listeners passed a cognitive screening battery. Accuracy of synthetic sentence identification was measured using stimuli processed to restrict spectral information. Performance was measured as a function of age, hearing status, amount of spectral information, and degradation of the amplitude envelope (using fast-acting compression with compression ratios ranging from 1:1 to 5:1). Mean identification scores decreased significantly with increasing age, the presence of hear- c ing loss, the removal of spectral information, and with increasing distortion of the amplitude envelope (i....Continue Reading

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Citations

Aug 16, 2006·Journal of Speech, Language, and Hearing Research : JSLHR·Lu-Feng ShiKaren A Doherty
Aug 7, 2004·The Journal of the Acoustical Society of America·Henry SimonJoseph P Walton
Nov 26, 2009·Journal of the American Academy of Audiology·Marc Brennan, Pamela Souza
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Oct 2, 2007·Journal of Speech, Language, and Hearing Research : JSLHR·Lorienne M Jenstad, Pamela E Souza

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