Digital Automatic Level Control (Alc) Circuit


Posted on Jul 4, 2012    9193

This approach to automatic level control (ALC) makes use of digitally switched audio attenuators in the signal path. The output level of the system is sensed, compared to a reference, and audio pads are inserted via analog switches.

Digital Automatic Level Control (Alc) Circuit - schematic

This method is nearly instantaneous and eliminates the compromises necessary in conventional RC network ALC systems using fast attack, slow-decay approaches.

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