<p>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.</p>
申请公布号
WO2005036740(A1)
申请公布日期
2005.04.21
申请号
WO2004US24532
申请日期
2004.07.29
申请人
BOSTON ACOUSTICS, INC.;MARTIN, STEPHEN, L.;BURLINGAME, GREGORY, B.;DAVID, JOHN, R.;ROGGE, GLENN, G.
发明人
MARTIN, STEPHEN, L.;BURLINGAME, GREGORY, B.;DAVID, JOHN, R.;ROGGE, GLENN, G.