A Delay-Based Constrained Beamformer for Blind Speech Enhancement and Dereverberation
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Author(s): | Zohra Yermeche, Nedelko Grbic |
| Title: | A Delay-Based Constrained Beamformer for Blind Speech Enhancement and Dereverberation |
| Conference name: | ELMAR |
| Year: | 2007 |
| Publisher: | IEEE |
| City: | Zadar, Croatia |
| ISI number: | 000256667800034 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Signal Processing (*** Error ***) School of Engineering S- 372 25 Ronneby +46 455 38 50 00 http://www.tek.bth.se/ |
| Authors e-mail: | zye@bth.se, ngr@bth.se |
| Language: | English |
| Abstract: | This paper presents a new microphone array method to enhance speech signals in a noisy reverberant environment. A time-delay estimation method is used for the speech source localization. The robustness of the localization method in high noise levels is provided by a subband Kurtosis-weighted structure. The estimated inter-sensor time-delays are directly used in an adaptive soft-constrained subband beamformer. Evaluation in a simulated environment with real speech sequences shows promising results. |
| Subject: | Signal Processing\Beamforming Signal Processing\Speech Enhancement |
| Keywords: | Speech enhancement, dereverberation, beamforming, time-delay estimation |
