Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196636
