Changeset 6938a20 for tests/src/spectral/test-phasevoc.c

Timestamp:

Mar 3, 2013, 7:37:43 PM (11 years ago)

Author:

Paul Brossier <piem@piem.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

9547247

Parents:

26775a3

Message:

tests/src/spectral/: improve examples

File:

• tests/src/spectral/test-phasevoc.c (modified) (1 diff)

tests/src/spectral/test-phasevoc.c

@@ -1 @@
-/* test sample for phase vocoder */
-
-#include <stdio.h>
 #include <aubio.h>
 
-int main(){
-        uint_t win_s    = 1024; /* window size                       */
-        uint_t hop_s    = 256;  /* hop size                          */
-        /* allocate some memory */
-        fvec_t * in       = new_fvec (hop_s); /* input buffer       */
-        cvec_t * fftgrain = new_cvec (win_s); /* fft norm and phase */
-        fvec_t * out      = new_fvec (hop_s); /* output buffer      */
-        /* allocate fft and other memory space */
-        aubio_pvoc_t * pv = new_aubio_pvoc(win_s,hop_s);
-        /* fill input with some data */
-        printf("initialised\n");
-        /* execute stft */
-        aubio_pvoc_do (pv,in,fftgrain);
-        printf("computed forward\n");
-        /* execute inverse fourier transform */
-        aubio_pvoc_rdo(pv,fftgrain,out);
-        printf("computed backard\n");
-        del_aubio_pvoc(pv);
-        del_fvec(in);
-        del_cvec(fftgrain);
-        del_fvec(out);
-        aubio_cleanup();
-        printf("memory freed\n");
-        return 0;
+int main ()
+{
+  uint_t n = 6; // compute n times
+  uint_t win_s = 32; // window size
+  uint_t hop_s = win_s / 4; // hop size
+
+  fvec_t * in = new_fvec (hop_s); // input buffer
+  cvec_t * fftgrain = new_cvec (win_s); // fft norm and phase
+  fvec_t * out = new_fvec (hop_s); // output buffer
+
+  // allocate fft and other memory space
+  aubio_pvoc_t * pv = new_aubio_pvoc(win_s,hop_s);
+
+  // fill input with some data
+  fvec_set (in, 1.);
+  fvec_print (in);
+
+  while ( n-- ) {
+    // get some fresh input data
+    // ..
+
+    // execute phase vocoder
+    aubio_pvoc_do (pv,in,fftgrain);
+
+    // do something with fftgrain
+    // ...
+    cvec_print (fftgrain);
+
+    // optionnaly rebuild the signa
+    aubio_pvoc_rdo(pv,fftgrain,out);
+
+    // and do something with the result
+    // ...
+    fvec_print (out);
+  }
+
+  // clean up
+  del_fvec(in);
+  del_cvec(fftgrain);
+  del_fvec(out);
+  del_aubio_pvoc(pv);
+  aubio_cleanup();
+
+  return 0;
 }