An interesting LED electronic circuit that works as a meter for measuring audio levels. The more LED's - the higher the audio volume!
The circuit rectifies the audio input and controls the LEDs in a logarithmic manner, which it does by means of a 5-stage feedback circuit.
This could be an interesting project if you want to build an LED audio volume kit for use in an audio mixer, on a transmitter, etc... Let us know how it works out!
- Led Audio Vu Meter
- Led Vu Meter
- Led Audio
- Led Audio Meter
- Led Sound Meter