convert my computers audio signal (via FFT?) into a serial signal usable for my Arduino code

edited February 2016 in Arduino

Hey guys, i´m a processing noob so i would like to know, how to configure my processing 3 to grab my audiosignal and convert it ( maybe with FFT; i dont understand this) into a signal usable for my arduino (COM 6 connection). I need 3 frequence spectra for the left and right audiochannel.

Is it possible to grab the audiosignal through the software rather than using microphones? I hope you understand me( sorry for my bad english). If there are any questions please leave a comment.

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