Abstract
A generalised Wiener post-filter is proposed to enhance the beamformer output in a microphone array for automatic speech recognition in mobile robot application. Conventional Wiener post-filters are known to perform poorly on suppressing low frequency noise. Proposed is a new post-filter fitting into a generalised Wiener model to reduce low frequency noise more effectively for the purpose of realising robust speech recognition. Experimental results confirm that the proposed post-filter shows significant improvement in terms of speech quality and recognition performance.
| Original language | English |
|---|---|
| Pages (from-to) | 1003-1005 |
| Number of pages | 3 |
| Journal | Electronics Letters |
| Volume | 43 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2007 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
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Yoon, H., & Ko, H. (2007). Microphone array post-filter using input-output ratio of beamformer noise power spectrum. Electronics Letters, 43(18), 1003-1005. https://doi.org/10.1049/el:20071534