Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Within cabin or compartment of vehicle
Patent
1997-05-16
2000-11-21
Isen, Forester W.
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Within cabin or compartment of vehicle
381 711, 381 712, 381 7113, 381 941, H03B 2900, H03B 1500
Patent
active
061513970
ABSTRACT:
Methods and devices for reducing undesired signals in a communication environment. At least two distinct composite signals (X.sub.1 and X.sub.2) are transmitted from a first communication environment (260). A noise coefficient of the first communication environment (260) based on the at least two distinct composite signals (X.sub.1 and X.sub.2) is calculated. At least two noise canceling signals based on the noise coefficient are calculated. The at least two noise canceling signals are added to an incoming signal (Y.sub.3) from a second communication environment (280) to produce at least two combined signals. The at least two combined signal are transmitted into the first communication environment (260).
REFERENCES:
patent: 4473906 (1984-09-01), Warnaka et al.
patent: 4480333 (1984-10-01), Ross
patent: 4489441 (1984-12-01), Chaplin
patent: 4490841 (1984-12-01), Chaplin et al.
patent: 4562589 (1985-12-01), Warnaka et al.
patent: 4589133 (1986-05-01), Swinbanks
patent: 4589137 (1986-05-01), Miller
patent: 4596033 (1986-06-01), Swinbanks
patent: 4629829 (1986-12-01), Puhl et al.
patent: 4649505 (1987-03-01), Zinser, Jr. et al.
patent: 4672674 (1987-06-01), Clough et al.
patent: 4677676 (1987-06-01), Eriksson
patent: 4950966 (1990-08-01), Moulds, III
patent: 5014294 (1991-05-01), Kromenaker et al.
patent: 5033082 (1991-07-01), Eriksson et al.
patent: 5212764 (1993-05-01), Ariyoshi
patent: 5235612 (1993-08-01), Stilwell et al.
patent: 5247470 (1993-09-01), McKown et al.
patent: 5251263 (1993-10-01), Andrea et al.
patent: 5293425 (1994-03-01), Oppenheim et al.
patent: 5319736 (1994-06-01), Hunt
patent: 5475759 (1995-12-01), Engebretson
patent: 5500879 (1996-03-01), Webster et al.
patent: 5526421 (1996-06-01), Berger et al.
patent: 5594803 (1997-01-01), Fujiwara et al.
patent: 5689572 (1997-11-01), Ohki et al.
patent: 5701350 (1997-12-01), Popovich
patent: 5748725 (1998-05-01), Kubo
Bell, Anthony J. et al., Computational Neurobiology Laboratory, "An Information-Maximisation Approach to Blind Separation and Blind Deconvolution", pp. 1-38.
Torkkola, Kari, Motorola, Inc., "Blind Separation of Delayed and Convolved Sources Based on Information Maximization", Oct. 24, 1995.
Freeburg Thomas A.
Jackson, Jr. II I. Riley
Bose Romi N.
Hughes Terri S.
Isen Forester W.
Motorola Inc.
Pendleton Brian Tyrone
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