Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent
1993-02-05
1995-04-11
Kuntz, Curtis
Electrical audio signal processing systems and devices
Noise or distortion suppression
Interpolation
381 684, 381 47, H04B 1500
Patent
active
054066352
ABSTRACT:
The invention relates to a noise attenuation system for voice signals. The invention is based on noise signal measurement during the tonal periods of the voice. The line spectrum structure of the spectrum of the tonal sounds is utilized in the noise measurement. In this way it is possible to measure the noise of different frequency bands with the aid of narrow-band filters.
REFERENCES:
patent: 4628529 (1986-12-01), Borth et al.
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 5214741 (1993-05-01), Akamine et al.
IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 28, No. 2, Apr. 1980, New York, pp. 137-145, "Speech Enhancement Using a Soft-Decision Noise Suppression Filter", McAulay et al.
IEEE International Symposium on Circuits and Systems, vol. 1, May 1, 1990, "Sub-Band Adaptive IIR Noise Cancellation" pp. 775-778, Lee et al.
Electronics and Communications in Japan, vol. 64, No. 9, Sep. 1981, N.Y., U.S.A. "Quality Improvement of Synthesized Speech in Noisy Speech Analysis-Synthesis Processing", pp. 21-30, Nagabuchi et al.
Kuntz Curtis
Lee Ping W.
Nokia Mobile Phones Ltd.
LandOfFree
Noise attenuation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Noise attenuation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise attenuation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1544350