Feedback method of noise control having multiple inputs and outp

Details Feedback method of noise control having multiple inputs and outp Feedback method of noise control having multiple inputs and outp

1996-04-30

1999-09-14

Chang, Vivian

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Counterwave generation control path

381 718, A61F 1106

Patent

active

059534281

ABSTRACT:
A multidimensional feedback system is used to reduce the noise component of a vibrational or acoustic field. The feedback algorithm includes a matrix operator that diagonalizes the feedback system. As a consequence, each of two or more actuators can be treated as though it closes an independent, one-dimensional feedback system. Therefore, classical one-dimensional feedback analysis can be used in the context of a system having multiple error sensors and multiple actuators.

REFERENCES:
patent: 5091953 (1992-02-01), Tretter
patent: 5097923 (1992-03-01), Ziegler et al.
patent: 5170433 (1992-12-01), Elliott et al.
patent: 5394376 (1995-02-01), Riddle et al.
Elliott, S. J. et al., "A Multiple Error LMS Algorithm and Its Application to the Active Control of Sound and Vibration," IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-35, No. 10, Oct. 1987, pp. 1424-1434.

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