Speech enhancement using multiple soft constrained subband, beamformers and non-coherent technique
Blekinge Institute of Technology, Department of Signal Processing2003 (English)Conference paper (Refereed) Published
This paper presents a new robust microphone array processing technique to enhance speech signal under the influence of noise and jammer(s). The new structure comprises of two soft-constrained subband beamformers and a non-coherent processing technique.Essentially the first beamformer enhances the desired speech signal in a specific constrained region. The residual interference in the beamformer's output is then spectral subtracted using the estimated interference from the secong beamformer. Evaluations in a real office environment show higher interference suppression compared to those obtained using the soft constrained beamformer only. Most importantly, this is achieved with negligible expense on target signal distortion.
Place, publisher, year, edition, pages
Salt Lake city: IEEE , 2003.
Beamforming, spectral subtraction, non-coherent technique
IdentifiersURN: urn:nbn:se:bth-9610Local ID: oai:bth.se:forskinfoBAE3ADADEC95BEFCC1256E290039BBE0ISBN: 0-7803-7663-3OAI: oai:DiVA.org:bth-9610DiVA: diva2:837501
IEEE International Conference on Acoustics, Speech, and Signal Processing