Method and device for suppressing background noise in a voice si

Details Method and device for suppressing background noise in a voice si Method and device for suppressing background noise in a voice si

1995-10-27

1997-10-21

Olms, Douglas W.

Multiplex communications

Duplex

Transmit/receive interaction control

379410, 455307, 381 71, 367901, H04M 908, H04B 320, H04B 112, H04B 1500

Patent

active

056803931

ABSTRACT:
The invention provides a method of suppressing a background noise signal in a sampled noisy voice signal. The method comprises the following steps: digital frequency-domain processing of the noisy voice signal to produce time-domain filtering coefficients, and digital time-domain processing of the noisy voice signal in accordance with the filter coefficients to produce a voice signal in which the background noise signal is substantially suppressed.

REFERENCES:
patent: 4628529 (1986-12-01), Borth et al.
patent: 5329587 (1994-07-01), Morgan et al.
patent: 5406622 (1995-04-01), Silverberg et al.
patent: 5416847 (1995-05-01), Boze
patent: 5561667 (1996-10-01), Gerlach
F. M. Wang et al, "Frequency Domain Adaptive Postfiltering for Enchancement of Noisy Speech", Speech Communicationi, vol. 12, No. 1, Mar. 1993, Amsterdam, pp. 41-56.
T. Huhn and H.J. Jentschel, "Kombination von Gerauschreduktion und Echokompensation Beim Freisprechen, " Nachrichtentech Elektron., Berlin 43 6 pp. 274-280 1993.

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