Patent
1994-09-20
1996-11-19
Tung, Kee M.
395 242, 395 22, G10L 302
Patent
active
055771610
ABSTRACT:
Noise reduction using a digital signal processor includes receiving an input signal which may include a noise-corrupted information signal and/or a noise signal, filtering the noise-corrupted information signal to reduce noise content, and outputting a filtered information signal having the noise content reduced. The filtering includes estimating the spectral envelope of the noise-corrupted information signal amplitude using the formula:
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"Frequency Domain Noise Suppression Approaches In Mobile Telephone Systems", Jin Yang, published in Proc. ICASSP, vol. 2, pp. 363-366, Apr. 1993.
"Speech Enhancement Using A Soft-Decision Noise Suppression Filter", Robert J. McAulay et al., IEEE Transactions on ASSP, vol. 28, No. 2, pp. 137-145, Apr. 1980.
ALCATEL N.V.
Tung Kee M.
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