Title :
On the output SNR of the speech-distortion weighted multichannel Wiener filter
Author :
Doclo, Simon ; Moonen, Marc
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Belgium
Abstract :
In this letter, we prove that the output signal-to-noise ratio (SNR) after noise reduction with the speech-distortion weighted multichannel Wiener filter is always larger than or equal to the input SNR, for any filter length, for any value of the tradeoff parameter between noise reduction and speech distortion, and for all possible speech and noise correlation matrices.
Keywords :
Wiener filters; correlation theory; filtering theory; matrix algebra; signal denoising; speech enhancement; correlation matrix; noise reduction; output SNR; signal-to-noise ratio; speech-distortion; weighted multichannel Wiener filter; Acoustic noise; Delay estimation; Finite impulse response filter; Microphones; Noise reduction; Signal processing algorithms; Signal to noise ratio; Speech enhancement; Speech processing; Wiener filter; Multichannel Wiener filter; output signal-to-noise ratio (SNR);
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.859530
