5th European Conference on Speech Communication and Technology

Rhodes, Greece
September 22-25, 1997

Multi-Channel Noise Reduction Using Wavelet Filter Bank

Jiri Sika, Vratislav Davidek

Faculty of Electrical Engineering Czech Technical University Prague, Czech Republic

This paper deals with the problem of estimation of a speech signal corrupted by an additive noise when observations from two microphones are available. The basic method for noise reduction using the coherence function is modified by using wavelets. The both observations are splitted by filter bank in five narrow bands through the whole used bandwidth (0...4kHz). The coherence functions are then computed for each band and the output speech estimation is reconstructed.

Full Paper

Bibliographic reference.  Sika, Jiri / Davidek, Vratislav (1997): "Multi-channel noise reduction using wavelet filter bank", In EUROSPEECH-1997, 2591-2594.