qq260327056/FFT

FFT-- A 1D Fast Fourier Transform

A 1D FFT, demonstrates inverse 
Tyler Simon

To compile:

make

which does:

cc -o fft_test fft1_wav.c fft64.c ifft64.c -I./ 

To Run:

./fft_test sine.wav 

Spectrogram:
sox test.wav -c 1 trash.wav spectrogram -o test.png