Adaptive speech enhancement using frequency-specific SNR estimates

Author

Avendano, Carlos ; Hermansky, Hynek ; Vis, Marvin ; Bayya, Aruna

Author_Institution

Oregon Graduate Inst. of Sci. & Technol., Beaverton, OR, USA

fYear

1996

fDate

30 Sep-1 Oct 1996

Firstpage

65

Lastpage

68

Abstract

We describe an adaptive speech enhancement technique based on selecting a set of pre-computed FIR filters to process the compressed short-time power spectral trajectories of noisy speech. The responses of the pre-computed filters depend only on the signal to noise ratios (SNRs) and do not depend on the center frequency of the subbands. This allows for a compact design in which the estimate of the SNR at the particular frequency channel is used as the filter selection criterium for that sub-band

Keywords

FIR filters; adaptive filters; noise; speech enhancement; adaptive speech enhancement; compressed short-time power spectral trajectories; frequency-specific SNR estimates; noisy speech; pre-computed FIR filters; signal to noise ratios; Additive white noise; Filter bank; Finite impulse response filter; Frequency estimation; Gaussian noise; Signal to noise ratio; Speech enhancement; Speech processing; Telephony; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Interactive Voice Technology for Telecommunications Applications, 1996. Proceedings., Third IEEE Workshop on

Conference_Location

Basking Ridge, NJ

Print_ISBN

0-7803-3238-5

Type

conf

DOI

10.1109/IVTTA.1996.552760

Filename

552760