src/spectral/test-fft.c

#include <aubio.h>

int main ()
{
  uint_t win_s = 8; // window size
  fvec_t * in = new_fvec (win_s); // input buffer
  cvec_t * fftgrain = new_cvec (win_s); // fft norm and phase
  fvec_t * out = new_fvec (win_s); // output buffer
  // create fft object
  aubio_fft_t * fft = new_aubio_fft(win_s);

  // fill input with some data
  in->data[0] = 1;
  in->data[1] = 2;
  in->data[2] = 3;
  in->data[3] = 4;
  in->data[4] = 5;
  in->data[5] = 6;
  in->data[6] = 5;
  in->data[7] = 6;
  fvec_print(in);

  // execute stft
  aubio_fft_do (fft,in,fftgrain);
  cvec_print(fftgrain);

  // execute inverse fourier transform
  aubio_fft_rdo(fft,fftgrain,out);

  // cleam up
  fvec_print(out);
  del_aubio_fft(fft);
  del_fvec(in);
  del_cvec(fftgrain);
  del_fvec(out);
  aubio_cleanup();
  return 0;
}