Audio indicator circuit with dual display
This circuit indicates audio in the form of a composite display. On the one hand, it can drive a group of light-emitting diode LEDs according to the magnitude of the audio signal level to make a bar indicator. On the other hand, the changing components in the audio signal control each LED to be different in six levels. The luminous brightness of the LED gradually changes, and the rhythm of the LED brightness changes continuously with the change of the audio signal.
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