Robust microphone array using subband adaptive beamformer and spectral subtraction
(2002) ICCS 2002 - 8th IEEE International Conference on Communications Systems 2. p.1020-1024- Abstract
- This paper presents a new robust microphone array to enhance speech signal under the influence of noise and jammer(s). The proposed structure comprises of a soft constrained subband beamformer, a blocking system and a non-coherent processing technique. The soft constrained beamformer enhances the desired speech signal in a specified region by suppressing all side-lobes. This enhanced signal is then used as a reference signal by the blocking system to estimate the interference spectrum. Finally, the beamformer's output is spectral subtracted using the estimated interference spectrum. Simulations in a real office environment show higher interference suppression level compared to those obtained using the soft constrained beamformer only. Most... (More)
- This paper presents a new robust microphone array to enhance speech signal under the influence of noise and jammer(s). The proposed structure comprises of a soft constrained subband beamformer, a blocking system and a non-coherent processing technique. The soft constrained beamformer enhances the desired speech signal in a specified region by suppressing all side-lobes. This enhanced signal is then used as a reference signal by the blocking system to estimate the interference spectrum. Finally, the beamformer's output is spectral subtracted using the estimated interference spectrum. Simulations in a real office environment show higher interference suppression level compared to those obtained using the soft constrained beamformer only. Most importantly. this is achieved with negligible expense on target signal distortion. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9cfe2e04-76a2-4d4c-acf1-017b3df364b4
- author
- Low, Siow-Yong ; Grbic, Nedelko LU and Nordholm, Sven
- publishing date
- 2002-11
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- The 8th International Conference on of Communication Systems, 2002. ICCS 2002.
- volume
- 2
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- ICCS 2002 - 8th IEEE International Conference on Communications Systems
- conference location
- Singapore
- conference dates
- 2002-11-25 - 2002-11-28
- ISBN
- 0-7803-7510-6
- DOI
- 10.1109/ICCS.2002.1183287
- language
- English
- LU publication?
- no
- id
- 9cfe2e04-76a2-4d4c-acf1-017b3df364b4
- date added to LUP
- 2016-06-23 15:24:09
- date last changed
- 2018-11-21 21:24:30
@inproceedings{9cfe2e04-76a2-4d4c-acf1-017b3df364b4, abstract = {{This paper presents a new robust microphone array to enhance speech signal under the influence of noise and jammer(s). The proposed structure comprises of a soft constrained subband beamformer, a blocking system and a non-coherent processing technique. The soft constrained beamformer enhances the desired speech signal in a specified region by suppressing all side-lobes. This enhanced signal is then used as a reference signal by the blocking system to estimate the interference spectrum. Finally, the beamformer's output is spectral subtracted using the estimated interference spectrum. Simulations in a real office environment show higher interference suppression level compared to those obtained using the soft constrained beamformer only. Most importantly. this is achieved with negligible expense on target signal distortion.}}, author = {{Low, Siow-Yong and Grbic, Nedelko and Nordholm, Sven}}, booktitle = {{The 8th International Conference on of Communication Systems, 2002. ICCS 2002.}}, isbn = {{0-7803-7510-6}}, language = {{eng}}, pages = {{1020--1024}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Robust microphone array using subband adaptive beamformer and spectral subtraction}}, url = {{http://dx.doi.org/10.1109/ICCS.2002.1183287}}, doi = {{10.1109/ICCS.2002.1183287}}, volume = {{2}}, year = {{2002}}, }