System and method for adaptive interference cancelling

Details System and method for adaptive interference cancelling System and method for adaptive interference cancelling

1996-06-27

1998-10-20

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Directive circuits for microphones

381 941, 381 912, 381 947, 367121, 367119, H04R 300

Patent

active

058258981

ABSTRACT:
An adaptive system and method for reducing interference in a signal received from an array of sensors. Adaptive filters are used to generate cancelling signals that closely approximate the interference present in the received signal. The adaptive filter weights are converted into the frequency domain where the frequency representation values in a selected frequency range are truncated to avoid signal leakage involving narrow band signals. Decolorizing filters are used to produce the cancelling signals having a flat frequency spectrum. Normalized power difference is used limit the operation of the adaptive filters to the case where there is some directional interference to be eliminated.

REFERENCES:
patent: 4239936 (1980-12-01), Sakoe
patent: 4363007 (1982-12-01), Haramoto et al.
patent: 4409435 (1983-10-01), Ono
patent: 4442546 (1984-04-01), Ishigaki
patent: 4459851 (1984-07-01), Crostack
patent: 4495643 (1985-01-01), Orban
patent: 4517415 (1985-05-01), Laurence
patent: 4559642 (1985-12-01), Miyaji et al.
patent: 4581758 (1986-04-01), Coker et al.
patent: 4589137 (1986-05-01), Miller
patent: 4622692 (1986-11-01), Cole
patent: 4628529 (1986-12-01), Borth et al.
patent: 4653102 (1987-03-01), Hansen
patent: 4653606 (1987-03-01), Flanagan
patent: 4658426 (1987-04-01), Chabries et al.
patent: 4696043 (1987-09-01), Iwahara et al.
patent: 4718096 (1988-01-01), Meisel
patent: 4731850 (1988-03-01), Levitt et al.
patent: 4741038 (1988-04-01), Elko et al.
patent: 4750207 (1988-06-01), Gebert et al.
patent: 4769847 (1988-09-01), Taguchi
patent: 4802227 (1989-01-01), Elko et al.
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 4910718 (1990-03-01), Horn
patent: 4910719 (1990-03-01), Thubert
patent: 4932063 (1990-06-01), Nakamura
patent: 4937871 (1990-06-01), Hattori
patent: 4956867 (1990-09-01), Zarek et al.
patent: 4965834 (1990-10-01), Miller
patent: 5075694 (1991-12-01), Donnangelo et al.
patent: 5086415 (1992-02-01), Takahashi et al.
patent: 5142585 (1992-08-01), Taylor
patent: 5192918 (1993-03-01), Sugiyama
patent: 5208864 (1993-05-01), Kaneda
patent: 5212764 (1993-05-01), Ariyoshi
patent: 5241692 (1993-08-01), Harrison et al.
patent: 5313555 (1994-05-01), Kamiya
patent: 5319736 (1994-06-01), Hunt
patent: 5335011 (1994-08-01), Addeo et al.
patent: 5353376 (1994-10-01), Oh et al.
patent: 5381473 (1995-01-01), Andrea et al.
patent: 5412735 (1995-05-01), Engebretson et al.
patent: 5416845 (1995-05-01), Shen
patent: 5416847 (1995-05-01), Boze
patent: 5416887 (1995-05-01), Shimada
patent: 5432859 (1995-07-01), Yang et al.
patent: 5473701 (1995-12-01), Cezanne et al.
patent: 5473702 (1995-12-01), Yoshida et al.
patent: 5485515 (1996-01-01), Allen et al.
patent: 5511128 (1996-04-01), Lindemann
patent: 5515378 (1996-05-01), Roy, III et al.
patent: 5524056 (1996-06-01), Killion et al.
patent: 5524057 (1996-06-01), Akiho et al.
patent: 5546090 (1996-08-01), Roy, III et al.
patent: 5581620 (1996-12-01), Brandstein et al.
patent: 5592181 (1997-01-01), Cai et al.
patent: 5592490 (1997-01-01), Barratt et al.
patent: 5615175 (1997-03-01), Cater et al.
patent: 5625697 (1997-04-01), Bowen et al.
patent: 5625880 (1997-04-01), Goldburg et al.
patent: 5627799 (1997-05-01), Hoshuyama
patent: 5627999 (1997-05-01), Hoshuyama
patent: 5642353 (1997-06-01), Roy, III et al.
patent: 5644641 (1997-07-01), Ikeda
patent: 5657393 (1997-08-01), Crow
patent: 5664021 (1997-09-01), Chu et al.
patent: 5668747 (1997-09-01), Ohashi
patent: 5673325 (1997-09-01), Andrea et al.
patent: 5689572 (1997-11-01), Ohki et al.
patent: 5701344 (1997-12-01), Wakui
patent: 5715319 (1998-02-01), Chu
patent: 5727073 (1998-03-01), Ikeda
"Beamforming, a versatile approach to spacial filtering," IEEE ASSN Magazine, Apr. 1988, vol. 5, No. 2, pp. 4-24.
Sewald et al., "Application of . . . Beamforming to Reject Turbulence Noise in Airducts," 1996 IEEE International Conference on Acoustics, Speech and Signal Processing Proceedings (ICASSP), May 7-16, 1996, vol. 5, No. CONF-21, May 7, 1996, IEEE pp. 2734-2737.
Widrow et al., Adapative Noise Cancelling: Principles and Applications, Proc. IEEE 63: 1692-1716, 1975.
Van Veen and Buckley, Beamforming: A Versatile Approach to Spatial Filtering, IEEE ASSP Mag. 5(2), 4-24, 1988.
Griffiths and Jim, An Alternative Approach to Linearly Constrained Adaptive Beamforming, IEEE Trans. Ant. Prop. AP-30:27-34, 1982.

Affiliated with

Also associated with

Rating

System and method for adaptive interference cancelling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for adaptive interference cancelling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for adaptive interference cancelling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-254159