Amplitude Demodulation

frank desben's icon

Hi all,
does anybody know of an existing external or patch, that does Amplitude Demodulation ?

I have a low frequency signal (around a few Hz) and amplitude modulate it by 10.000 Hz.

Now I want to extract the original signal from the AM signal.

Any help or link is well appreciated!

Thanks,
Frank

brendan mccloskey's icon

Hi Frank
I tried doing this with math-tilde objects ([/~] etc), but eventually settled on the old Renaissance algorithm known as "cheating":

Max Patch
Copy patch and select New From Clipboard in Max.

Brendan

yp's icon

maybe something like this?

Max Patch
Copy patch and select New From Clipboard in Max.

cheers,
yp

yp's icon

btw - the initial phase value of the rightmost cycle~ should be 0.5 (set the float connected to the right inlet of cycle~)