| Speech enhancement with multichannel Wiener filter techniques in multimicrophone binaural hearing aids. | |
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MedLine Citation:
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PMID: 19173423 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper evaluates speech enhancement in binaural multimicrophone hearing aids by noise reduction algorithms based on the multichannel Wiener filter (MWF) and the MWF with partial noise estimate (MWF-N). Both algorithms are specifically developed to combine noise reduction with the preservation of binaural cues. Objective and perceptual evaluations were performed with different speech-in-multitalker-babble configurations in two different acoustic environments. The main conclusions are as follows: (a) A bilateral MWF with perfect voice activity detection equals or outperforms a bilateral adaptive directional microphone in terms of speech enhancement while preserving the binaural cues of the speech component. (b) A significant gain in speech enhancement is found when transmitting one contralateral microphone signal to the MWF active at the ipsilateral hearing aid. Adding a second contralateral microphone showed a significant improvement during the objective evaluations but not in the subset of scenarios tested during the perceptual evaluations. (c) Adding the partial noise estimate to the MWF, done to improve the spatial awareness of the hearing aid user, reduces the amount of speech enhancement in a limited way. In some conditions the MWF-N even outperformed the MWF possibly due to an improved spatial release from masking. |
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Authors:
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Tim Van den Bogaert; Simon Doclo; Jan Wouters; Marc Moonen |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 125 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2009 Jan |
Date Detail:
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Created Date: 2009-01-28 Completed Date: 2009-07-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 360-71 Citation Subset: IM |
Affiliation:
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ExpORL, KU Leuven, O&N2, Leuven, Belgium. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Hearing Aids* Humans Male Middle Aged Noise Speech Perception* Speech Reception Threshold Test |
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