Dynamic distortion elimination for output audio

Details Dynamic distortion elimination for output audio Dynamic distortion elimination for output audio

2006-12-14

2011-10-25

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring of sound

Amplification control responsive to ambient sound

C381S098000, C381S101000, C381S102000, C381S103000, C381S056000, C379S390010

Reexamination Certificate

active

08045721

ABSTRACT:
A method (200) for improving quality of output audio (126). The method can include detecting an output acoustic signal (128) and generating a receive audio signal (134) based, at least in part, on the detected output acoustic signal. A frequency domain representation (140) of the receive audio signal can be compared to a frequency domain representation (138) of a source audio signal (124) from which the output acoustic signal is generated. At least one distortion signal (142) in the receive audio signal can be identified, and the source audio signal can be selectively equalized to reduce an amplitude of the source audio signal at a frequency that correlates to the distortion signal.

REFERENCES:
patent: 5081682 (1992-01-01), Kato et al.
patent: 6504935 (2003-01-01), Jackson
patent: 2005/0213780 (2005-09-01), Berardi et al.

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