TY - GEN
T1 - An hypothesized Wiener filtering approach to noisy speech recognition
AU - Berstein, Alberto D.
AU - Shallom, Ilan D.
PY - 1991/12/1
Y1 - 1991/12/1
N2 - The problem of speech recognition in a noisy environment is addressed. The mismatch problem originated when training a system in a clean environment and operating it in a noisy one. When measuring the similarity between a noisy test utterance and a list of clean templates a correction process, based on a series of Wiener filters built using the hypothesized clean template, is applied to the feature vectors of the noisy word. The filtering process is optimized as a by-product of the dynamic programming algorithm of the scoring step. Tests were conducted on two databases, one in Hebrew and the second in Japanese, using additive white and car noise at different SNRs. The method shows a good performance and compares well with other methods proposed in the literature.
AB - The problem of speech recognition in a noisy environment is addressed. The mismatch problem originated when training a system in a clean environment and operating it in a noisy one. When measuring the similarity between a noisy test utterance and a list of clean templates a correction process, based on a series of Wiener filters built using the hypothesized clean template, is applied to the feature vectors of the noisy word. The filtering process is optimized as a by-product of the dynamic programming algorithm of the scoring step. Tests were conducted on two databases, one in Hebrew and the second in Japanese, using additive white and car noise at different SNRs. The method shows a good performance and compares well with other methods proposed in the literature.
UR - http://www.scopus.com/inward/record.url?scp=0026384952&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0026384952
SN - 078030033
T3 - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
SP - 913
EP - 916
BT - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
A2 - Anon, null
PB - Institute of Electrical and Electronics Engineers
T2 - Proceedings of the 1991 International Conference on Acoustics, Speech, and Signal Processing - ICASSP 91
Y2 - 14 May 1991 through 17 May 1991
ER -