Audio input on R-Pi(Raspbian)

I want to try audio analysis by FFT on Raspberry Pi.
I tried running the program succeeded in Mac OS X,but I can’t get audio input via USB sound card.
Any ideas?
Is oF on R-Pi able to get audio data in the first place?

I just succeeded in recording and playing sound by ALSA(arecord,aplay).

Thanks in advance and I’m sorry for my poor English.

If arecord works on the RPi, then you shouldn’t have any issues. It’ll be a problem of choosing the right audio device. However there are many issues with recording audio through USB on the Pi.

Try updating the firmware on the Pi, that might help too.

Hi there, were you able to solve this ? did you buy a specific USB sound card model?