Changeset 2062e48 for src

Timestamp:

Sep 23, 2009, 6:37:24 PM (15 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:

b511fa9

Parents:

75a0f40

Message:

src/spectral/filterbank*.c: reduce filterbank size to n/2+1, other half is always empty

Location:

src/spectral

Files:

• filterbank.c (modified) (1 diff)
• filterbank_mel.c (modified) (1 diff)

src/spectral/filterbank.c

@@ -45 +45 @@
 
   /* allocate filter tables, an fvec of length win_s and of filter_cnt channel */
-  fb->filters = new_fvec (win_s, n_filters);
+  fb->filters = new_fvec (win_s / 2 + 1, n_filters);
 
   return fb;

src/spectral/filterbank_mel.c

@@ -70 +70 @@
   /* fill fft_freqs lookup table, which assigns the frequency in hz to each bin */
   for (bin = 0; bin < win_s; bin++) {
-    fft_freqs->data[0][bin] = aubio_bintofreq (bin, samplerate, win_s);
+    fft_freqs->data[0][bin] = aubio_bintofreq (bin, samplerate, (win_s - 1) * 2);
   }