Method and apparatus for leveling and equalizing the audio output of an audio or audio-visual system
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United States of America Patent
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Feb 27, 2001
Grant Date -
N/A
app pub date -
Sep 8, 1997
filing date -
Jan 9, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microcomputer for automatically controlling the sound in an audio or audio-visual system. Incoming audio signals from multiple channels are combined and fed to a pair of detector-rectifier circuits. One detector-rectifier circuit is a smoothing circuit with a time constant longer than that of the other detector-rectifier circuit. The signals with a longer time constant are fed to the microprocessor to control the volume function of an audio or audio-visual system. The signals with a shorter time constant are fed to the microprocessor to equalize the source frequency spectrum of an audio or audio-visual system.
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