Method and apparatus for frame-based loudspeaker equalization

Details Method and apparatus for frame-based loudspeaker equalization Method and apparatus for frame-based loudspeaker equalization

2005-12-19

2010-11-02

Faulk, Devona E (Department: 2614)

Electrical audio signal processing systems and devices

Loudspeaker feedback

C381S059000, C381S094900, C381S103000

Reexamination Certificate

active

07826625

ABSTRACT:
A method and apparatus for loudspeaker equalization are described. In one embodiment, the method comprising generating a set of parameters using an invertible, non-linear system based on input audio data and output data corresponding to a prediction of an output of a loudspeaker in response to the input data, and controlling an exact non-linear inverse of the non-linear system using the set of parameters to output a predistorted version of the input data.

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Lashkari, K., “High Quality sound from small loudspeakers using the exact inverse”, Signals, Systems and Computers, 2004. Asilomar Conference, CA. Nov. 2004.
Hyun Woo Kang, et al., “Adaptive Precompensation of Wiener Systems”, IEEE Transactions on Signal Processing, vol. 46, No. 10, Oct. 1998.

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