Audio amplitude detector circuit

Details Audio amplitude detector circuit Audio amplitude detector circuit

1978-07-31

1980-06-03

Mullins, James B.

Amplifiers

Having light-controlled or activated device

330138, 330144, 330280, 330284, H03G 700

Patent

active

042064155

ABSTRACT:
An audio signal amplitude detector for applying stereo audio signals above a predetermined amplitude to at least one pair of speakers. The audio signal for each channel is amplified and compared with two reference voltages. When the amplified audio signal is below a lower one of the reference voltages, the signal is blocked to the connected speaker amplifier. As the amplitude of the audio signal increases between the first and second reference voltages, an increasing portion of the audio signal is applied to the connected speaker amplifier until a maximum signal is applied when the amplitude is above the second reference voltage.

REFERENCES:
patent: 3333208 (1967-07-01), Hudak
patent: 3436674 (1969-04-01), Alexandrovich et al.
patent: 3978423 (1976-08-01), Bench

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