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Speech processing for hearing aids for moderate bilateral sensorineural hearing loss

DSpace at IIT Bombay

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Title Speech processing for hearing aids for moderate bilateral sensorineural hearing loss
 
Creator CHEERAN, AN
PANDEY, PC
 
Description Binaural dichotic presentation can be used for reducing the effects of increased temporal and spectral masking associated with sensorineural loss and for improving speech perception by persons with moderate bilateral loss. Speech processing schemes based on adjustable gain filtering, spectral splitting with perceptually balanced comb filters, temporal splitting with trapezoidal fading and inter-aural switching period of 20 and 40 ms, and combined splitting with cyclically swept comb filters with cycle time of 20, 40, and 80 ms were implemented. Experimental evaluation was carried out through listening tests involving recognition of randomly presented words by hearing impaired subjects, for establishing the effect of processing schemes and parameters. Binaural filtering always resulted in improvement. Maximum number of subjects showed large improvement with spectral splitting. Temporal splitting was better with 20 ms switching, while the combined splitting gave best improvements for cycle time of 40 ms.
 
Publisher IEEE
 
Date 2011-10-26T18:55:56Z
2011-12-15T09:12:27Z
2011-10-26T18:55:56Z
2011-12-15T09:12:27Z
2004
 
Type Proceedings Paper
 
Identifier 2004 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL IV, PROCEEDINGS: AUDIO AND ELECTROACOUSTICS SIGNAL PROCESSING FOR COMMUNICATIONS,17-20
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16095
http://hdl.handle.net/100/2681
 
Source IEEE International Conference on Acoustics, Speech, and Signal Processing,Montreal, CANADA,MAY 17-21, 2004
 
Language English