Title
Beamforming under Quantization Errors in Wireless Binaural Hearing Aids
Abstract
Improving the intelligibility of speech in different environments is one of the main objectives of hearing aid signal processing algorithms. Hearing aids typically employ beamforming techniques using multiple microphones for this task. In this paper, we discuss a binaural beamforming scheme that uses signals from the hearing aids worn on both the left and right ears. Specifically, we analyze the effect of a low bit rate wireless communication link between the left and right hearing aids on the performance of the beamformer. The scheme is comprised of a generalized sidelobe canceller (GSC) that has two inputs: observations from one ear, and quantized observations from the other ear, and whose output is an estimate of the desired signal. We analyze the performance of this scheme in the presence of a localized interferer as a function of the communication bit rate using the resultant mean-squared error as the signal distortion measure.
Year
DOI
Venue
2008
10.1155/2008/824797
EURASIP J. Audio, Speech and Music Processing
Keywords
Field
DocType
quantization error
Beamforming,Wireless,Computer science,Hearing aid,Speech recognition,Microphone array,Binaural recording,Quantization (signal processing),Distortion,Intelligibility (communication)
Journal
Volume
Issue
ISSN
2008
1
1687-4722
Citations 
PageRank 
References 
2
0.38
13
Authors
3
Name
Order
Citations
PageRank
Sriram Srinivasan137927.92
Ashish Pandharipande268971.29
Kees Janse371.87