Hey there people.
Currently I am attempting to get a light(led) to modulate to sound- a feature seen in many commercial dimmers and sound activated lights.
Basically the led can be set any dim level with 8 bit accuracy (PWM dimming). So the smarts of getting the LED to dim is already sorted.
I'm more interested in the best way to get pick up some sort of beat from an input audio source.
I was thinking some simple electret mic with a passive LPF going into the ATMEGA8 ADC could be an idea. Is it?
As for working out when beats are happening. I'm getting confused- obviously i dont' want to delve into doing DSP on the AVR if i don't have to (especially with software pwm being juggled at the same time :).
Can anyone offer any insight?