A typical electronic volume control circuit It shows a typical electronic volume control circuit. The circuit is often used in stereo audio devices through the computer (CPU) i
nto the line and adjust the volume control. Stereo signals by the, ? pin input by, pin output adjusted. The control signal to the CPU (clock, data and standby) from ? ~ foot into TC9211P in via an interface circuit for decoding and D/A converter into an analog signal control input signal amplitude number, so as to achieve the purpose of controlling the volume .