Dynamic bass boost apparatus and method
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United States of America Patent
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Jan 30, 2007
Issued Date -
N/A
app pub date -
Sep 11, 2003
filing date -
Sep 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Audio processing methods and apparatus are provided for at least partially compensating for the Fletcher-Munson effect. An audio processor includes a variable filter receiving an input signal and providing a filtered output signal, the variable filter having a fixed cutoff frequency and a quality factor that is controllable in response to a control signal, and a control circuit configured to detect a signal level representative of input signal level in a selected band and to generate the control signal in response to the detected signal level. The control circuit may include a low-pass band select filter and a detector for detecting a signal level in the band selected by the low-pass filter and for generating the control signal.
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