Speech enhancement for multimicrophone binaural hearing aids aiming to preserve the spatial auditory scene
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- 作者：Joachim Thiemann ; Menno Müller…
- 关键词：Hearing aids ; Binaural hearing aids ; Bilateral hearing aids ; Binaural MVDR
- 刊名：EURASIP Journal on Advances in Signal Processing
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：2016
- 期：1
- 全文大小：733 KB
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Menno Müller (1) (2)
Daniel Marquardt (1)
Simon Doclo (1)
Steven van de Par (1)
1. University of Oldenburg, Cluster of Excellence “Hearing4All”, Ammerländer Heerstr. 114-118, Oldenburg, 26129, Germany
2. Jade Hochschule, Ofener Str. 16/19, Oldenburg, 26121, Germany - 刊物主题：Signal, Image and Speech Processing;
- 出版者：Springer International Publishing
- ISSN：1687-6180
文摘
Modern binaural hearing aids utilize multimicrophone speech enhancement algorithms to enhance signals in terms of signal-to-noise ratio, but they may distort the interaural cues that allow the user to localize sources, in particular, suppressed interfering sources or background noise. In this paper, we present a novel algorithm that enhances the target signal while aiming to maintain the correct spatial rendering of both the target signal as well as the background noise. We use a bimodal approach, where a signal-to-noise ratio (SNR) estimator controls a binary decision mask, switching between the output signals of a binaural minimum variance distortionless response (MVDR) beamformer and scaled reference microphone signals. We show that the proposed selective binaural beamformer (SBB) can enhance the target signal while maintaining the overall spatial rendering of the acoustic scene. Keywords Hearing aids Binaural hearing aids Bilateral hearing aids Binaural MVDR