Real-Time DSP Implementation of a Subband Beamforming Algorithm for Dual Microphone Speech Enhancement
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Author(s): | Zohra Yermeche, Benny Sällberg, Nedelko Grbic, Ingvar Claesson |
| Title: | Real-Time DSP Implementation of a Subband Beamforming Algorithm for Dual Microphone Speech Enhancement |
| Conference name: | ISCAS |
| Year: | 2007 |
| Pagination: | 353-356 |
| ISBN: | 1-4244-0921-7 |
| Publisher: | IEEE |
| City: | New Orleans, LA, USA |
| ISI number: | 000251608400089 |
| 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, bsa@bth.se, ngr@bth.se, icl@bth.se |
| Language: | English |
| Abstract: | A real-time Digital Signal Processor (DSP) based implementation of a subband beamforming algorithm and its evaluation for dual microphone speech enhancement is presented. The algorithm, a calibrated constrained beamformer, is described theoretically and a real-time structure is proposed, including an efficient approach for multichannel data transformation. Measurements show that the battery driven DSP implementation supports 20 h operation-time, with an improved Signal-to-Noise Ratio (SNR) of up to 14~dB in high-noise factory environment. Further, less than half the provided computational performance of the DSP is used by the proposed method, hence, processing of additional tasks may be included. |
| Subject: | Signal Processing\Beamforming Signal Processing\Speech Enhancement |
| Keywords: | Speech enhancement, Beamforming, DSP |
