THE POP NOISE SUPPRESSION CIRCUIT OF ANALOG AUDIO AMPLIFIER

摘要

PURPOSE: A pop noise elimination circuit of an analog audio amplifier is provided to reduce the pop noise produced by the rising of instantaneous output direct current voltage by gradually raise output voltage. CONSTITUTION: An audio amp for eliminating pop noise is composed of an audio signal input section, an audio amplifier, a current source, a control voltage generating unit and a feedback loop. The audio amplifier amplifies a signal. The current source applies the current for eliminating the pop noise. The control voltage generating unit controls the current of the current source. The feedback loop applies the current generated from the current source.