Method of estimating delay in noise-affected voice channels

Details Method of estimating delay in noise-affected voice channels Method of estimating delay in noise-affected voice channels

1993-12-23

1995-12-26

Isen, Forester W.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381 97, H04B 1500

Patent

active

054795176

ABSTRACT:
The present invention relates to a method of reducing noise in a speech detection system. The phases of at least two noise-affected signals are estimated. The phase estimate and the phase compensation required for the noise reduction are performed in the frequency domain. The background noise and the transient behavior of the enclosed space are simultaneously estimated.

REFERENCES:
patent: 4017859 (1977-04-01), Medwin
patent: 4982375 (1991-01-01), Ng
Stremler, Ferrel G., Introduction to Communication Systems, 1990, Addison-Wesley Pub. Co., p. 334.
Martin Schlang, "Ein Verfahren Zur Automatischen Ermittlung Der Sprecherposition Beifreisprechen", TU Munchen und Siemens AG, Zentrale Aufgaben Informationstechnik, Germany, pp. 69-73 (1988).

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