Input sound processor

Details Input sound processor Input sound processor

2005-03-01

2009-06-02

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Loudspeaker feedback

C381S093000, C381S094100, C381S094200, C381S094300, C381S066000, C379S406010, C379S406050, C379S406060

Reexamination Certificate

active

07542577

ABSTRACT:
An input sound processor compares power at each frequency component of an input sound with a reference value, and sets multiplication points indicating frequency components at which the total power of the input sound is to be determined. A product-sum operation is performed at the multiplication points on the power at each frequency component and the square amplitude of each filter coefficient indicating the transfer characteristic from a loudspeaker to a microphone to estimate the total power of the input sound at the position of the microphone.

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patent: 2004/0264686 (2004-12-01), Enzner
patent: 11166835 (1999-06-01), None

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