H - Electricity – 03 – G
Patent
H - Electricity
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G
H03G 5/00 (2006.01) G10K 15/12 (2006.01) G11B 20/02 (2006.01) H03G 11/04 (2006.01) H03H 17/00 (2006.01) H04R 3/14 (2006.01) H04S 1/00 (2006.01)
Patent
CA 2107320
An audio signal processing apparatus performs the optimization process of an audio signal reproduced from a medium such as a compact disk. Each of low-pass and high-pass filters effects a band division on the audio signal. A peak analyzer detects the peak value of a low audio-range signal and outputs a control signal corresponding to the detected peak value to a voltage- controlled amplifier. The voltage-controlled amplifier adjusts the level of the low audio-range signal in accordance with the control signal. A mixture and distribution circuit combines the output of the voltage- controlled amplifier and the output of the high-pass filter and distributes the composite signal to corresponding power amplifiers for respectively driving speakers. Thus, a process suited to each of various music sources can be achieved by controlling the level of a low audio-range component based on the level of the low audio-range signal.
Hibino Masahiro
Sato Masanobu
Kirby Eades Gale Baker
Mitsubishi Denki Kabushiki Kaisha
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