Method and apparatus for leveling audio output

Details Method and apparatus for leveling audio output Method and apparatus for leveling audio output

1995-01-09

1997-09-09

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

381102, H03G 300

Patent

active

056664303

ABSTRACT:
A microcomputer for automatically controlling an audio output from a receiver. The microcomputer calculates a power signal corresponding to the power of a detected audio input signal, determines whether the calculated power signal is above or below a predetermined power value, generates a power control signal in response to whether the calculated power signal is above or below said predetermined value, and uses the power control signal to automatically maintain a substantially constant audio output from the receiver. In another embodiment, a separate detection circuit calculated the power signal and feeds it to the microcomputer.

REFERENCES:
patent: 4430747 (1984-02-01), Streeter
patent: 4539526 (1985-09-01), Davis
patent: 4546326 (1985-10-01), Van Uffelen et al.
patent: 5130665 (1992-07-01), Walden
patent: 5301236 (1994-04-01), Iizuka et al.
patent: 5396562 (1995-03-01), Ishimitsu et al.
patent: 5404315 (1995-04-01), Nakano et al.
Sound A1, p. 9 and block diagram.
Interchannel audio level variations: A progress report, May 1994; Communications Technology/Back to Basics.

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