Second European Conference on Speech Communication and Technology

Genova, Italy
September 24-26, 1991


An Evaluation of Adaptive Noise Cancelling for Speech Recognition

H. S. Dabis (1), Alan A. Wrench (2)

(1) Electrical Dept, Paisley College, Scotland, UK
(2) CSTR, University of Edinburgh, Scotland, UK

Speech recognition systems suffer greatly from the presence of additive noise. In this paper a two microphone approach is used as a front end processor to enhance speech corrupted by acoustically added noise signals. Extensive testing of the effect of the algorithm on a continuous speech recognition system was made and the results presented. The results show a reasonable SNR improvement of around 5 dB and an improvement in the recognition rate of the enhanced signal although the performance is not as good as that of the original clean signal. Keywords: Adaptive noise cancelling, continuous speech recognition, Adaptive filtering.

Full Paper

Bibliographic reference.  Dabis, H. S. / Wrench, Alan A. (1991): "An evaluation of adaptive noise cancelling for speech recognition", In EUROSPEECH-1991, 1301-1304.