Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Reexamination Certificate
2011-01-18
2011-01-18
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
C381S098000, C700S094000
Reexamination Certificate
active
07873172
ABSTRACT:
A method and apparatus for adaptive precompensation is disclosed. In one embodiment, the method comprises modifying operation of a predistortion filter in response to previous predistorted values and an original input signal, determining a precompensation error between the original input samples and the predicted loudspeaker output, and substantially reducing the precompensation error by using the exact inverse of a loudspeaker model that is a cascaded arrangement of at least one linear system with a non-linear system.
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Blakely , Sokoloff, Taylor & Zafman LLP
Chin Vivian
Fahnert Friedrich
NTT Docomo Inc.
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