Can you elaborate a bit on what you're trying to do?
For example, what frequency range - the full audio spectrum?
What exactly do you mean by having the LED react to it? Is it to indicate the strength (amplitude) of the audio signal by modulating the brightness of the LED?
Envelope detectors come in different levels of sophistication. If you can post the circuit you read about, it will be easier for others to help you with the component values.
The rectifying "smoothes out" the signal, stopping it from dropping so fast and allows me to sample at a lower rate. I think...What would this "averaging" accomplish?Therefore... just lower your sample rate .....then rectify the signal and do the average...
Not at all. Go with whatever you feel comfortable with.I'm going to jump to KlausST due to it being more within my current scope of understanding, I hope that does not appear rude Pjdd....
No.I see how you are digitally rectifying using the microcontroller but this would require a high sample rate
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