Title :
Optimal FIR subband beamforming for speech enhancement in multipath environments
Author :
Grbic, Nedelko ; Nordholm, Sven ; Cantoni, Antonio
Author_Institution :
Western Australian Telecommun. Res. Inst., Crawley, WA, Australia
Abstract :
The letter provides an analysis of optimal finite-impulse response subband beamforming for speech enhancement in multipath environments. A modification of the direct-path standard Wiener formulation is shown to give nearly optimal performance when it comes to signal-to-noise-plus-interference ratio, by including coherent multipath propagation in the criterion.
Keywords :
FIR filters; Wiener filters; acoustic signal detection; array signal processing; multipath channels; speech enhancement; FIR filters; FIR subband beamforming; Wiener filter; Wiener formulation; acoustic speech acquisition; coherent multipath propagation; finite-impulse response; microphone arrays; multipath environments; signal-to-noise-plus-interference ratio; speech enhancement; Acoustic noise; Array signal processing; Covariance matrix; Finite impulse response filter; Frequency; Microphone arrays; Noise cancellation; Optical reflection; Reverberation; Speech enhancement;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.818073
