| Auditory supplements to speechreading: combining amplitude envelope cues from different spectral regions of speech. | |
| | |
MedLine Citation:
|
PMID: 8132900 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Many listeners with severe-to-profound hearing losses perceive only a narrow range of low-frequency sounds and must rely on speechreading to supplement the impoverished auditory signal in speech recognition. Previous research with normal-hearing subjects [Grant et al., J. Exp. Psychol. 43A, 621-645 (1991)] demonstrated that speechreading was significantly improved when supplemented by amplitude-envelope cues that were extracted from various spectral regions of speech and presented as amplitude modulations of carriers with frequencies at or below the speech band from which the envelope was derived. This experiment assessed the benefit to speechreading provided by pairs of such envelope cues presented simultaneously. In general, greater improvements in speechreading scores were observed for pairs than for single envelopes when the carrier signals were chosen appropriately. However, when pairs of envelope signals were transposed to low frequencies, the benefit to speechreading was no better than the most effective single-band envelope signal tested, or for a low-pass-filtered speech signal with the same overall bandwidth. Suggestions for improving the efficacy of frequency-lowered envelope cues for hearing-impaired listeners are discussed. |
| | |
Authors:
|
K W Grant; L D Braida; R J Renn |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 95 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 1994 Feb |
Date Detail:
|
Created Date: 1994-04-21 Completed Date: 1994-04-21 Revised Date: 2007-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1065-73 Citation Subset: IM |
Affiliation:
|
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 02139. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Communication Disorders / rehabilitation Cues* Hearing Loss, Sensorineural / rehabilitation* Humans Lipreading* Photic Stimulation Speech Acoustics Speech Perception* |
| Grant Support | |
ID/Acronym/Agency:
|
DC 00010/DC/NIDCD NIH HHS; DC 00117/DC/NIDCD NIH HHS; DC 00792/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effect of temporal envelope smearing on speech reception.
Next Document: Difference limens for formant patterns of vowel sounds.