Enhancing the performance of speech recognition with echo cancellation

Author

Picone, J. ; Johnson, M.A. ; Hartwell, W.T.

Author_Institution

AT&T Bell Lab., Naperville, IL, USA

fYear

1988

fDate

11-14 Apr 1988

Firstpage

529

Abstract

The use of echo cancellation to improve speech recognition performance over telephone channels is described. Echo cancellation is shown to provide an increase of 25 dB in signal-to-noise ratio, thereby increasing recognition performance to a level which can be attained over telephone channels with no echo. A prototype system which includes the echo canceller and an isolated-word speaker-independent speech recognizer has been implemented within a single AT&T WE DSP-32

Keywords

echo suppression; signal processing; speech recognition; telephone station equipment; voice equipment; 25 dB; AT&T WE DSP-32; echo cancellation; echo canceller; isolated-word speaker-independent speech recognizer; performance; signal-to-noise ratio; speech recognition; telephone channels; Adaptive filters; Echo cancellers; Gradient methods; IEEE news; Speech enhancement; Speech recognition; Stochastic resonance; Telecommunication services; Telephony; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on

Conference_Location

New York, NY

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1988.196636

Filename

196636

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2998743