Circuit and method of preventing audio pop in an electronic audi

Details Circuit and method of preventing audio pop in an electronic audi Circuit and method of preventing audio pop in an electronic audi

1997-12-05

2000-12-05

Harvey, Minsun Oh

Electrical audio signal processing systems and devices

Noise or distortion suppression

Soft switching, muting, or noise gating

381 81, H04B 1500

Patent

active

06157726&

ABSTRACT:
A circuit connected between an audio signal receiver and an audio output unit can prevent an audio pop from being emitted by a speaker associated with the audio output unit. The circuit interrupts the output of the signal receiver when the DC voltage level of the system suddenly changes, e.g. when a different audio signal is selected or when the receiver is powered on or off. The output of the receiver is shunted through a resistor to ground until a blocking capacitor between the receiver and audio output unit can charge to the new DC voltage level.

REFERENCES:
patent: 4675905 (1987-06-01), Flora
patent: 4941187 (1990-07-01), Slater

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