Changeset 8c3f717

Timestamp:

Apr 10, 2013, 6:43:02 PM (12 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:

e8bc8e9

Parents:

2693655

Message:

src/pitch/pitch.{c,h}: add silence gate, default at -50dB

Location:

src/pitch

Files:

• pitch.c (modified) (5 diffs)
• pitch.h (modified) (1 diff)

src/pitch/pitch.c

@@ -36 +36 @@
 #include "pitch/pitch.h"
 
+#define DEFAULT_PITCH_SILENCE -50.
+
 /** pitch detection algorithms */
 typedef enum
@@ -83 +85 @@
   aubio_pitch_convert_t conv_cb;  /**< callback to convert it to the desired unit */
   aubio_pitch_get_conf_t conf_cb; /**< pointer to the current confidence callback */
+  smpl_t silence;                 /**< silence threshold */
 };
 
@@ -131 +134 @@
   aubio_pitch_set_unit (p, "default");
   p->bufsize = bufsize;
+  p->silence = DEFAULT_PITCH_SILENCE;
   p->conf_cb = NULL;
   switch (p->type) {
@@ -281 +285 @@
 }
 
+uint_t
+aubio_pitch_set_silence (aubio_pitch_t * p, smpl_t silence)
+{
+  if (silence < 0 && silence > -200) {
+    p->silence = silence;
+    return AUBIO_OK;
+  } else {
+    AUBIO_ERR("pitch: could do set silence to %.2f", silence);
+    return AUBIO_FAIL;
+  }
+}
+
+smpl_t
+aubio_pitch_get_silence (aubio_pitch_t * p)
+{
+  return p->silence;
+}
+
 
 /* do method, calling the detection callback, then the conversion callback */
@@ -287 +309 @@
 {
   p->detect_cb (p, ibuf, obuf);
+  if (aubio_silence_detection(ibuf, p->silence) == 1) {
+    obuf->data[0] = 0.;
+  }
   obuf->data[0] = p->conv_cb (obuf->data[0], p->samplerate, p->bufsize);
 }

src/pitch/pitch.h

@@ -83 +83 @@
 uint_t aubio_pitch_set_unit (aubio_pitch_t * o, char_t * mode);
 
+/** set the silence threshold of the pitch detection object
+
+  \param o pitch detection object as returned by new_aubio_pitch()
+  \param silence level threshold under which pitch should be ignored, in dB
+
+*/
+uint_t aubio_pitch_set_silence (aubio_pitch_t * o, smpl_t silence);
+
+/** set the silence threshold of the pitch detection object
+
+  \param o pitch detection object as returned by new_aubio_pitch()
+
+  \param return level threshold under which pitch should be ignored, in dB
+
+*/
+smpl_t aubio_pitch_get_silence (aubio_pitch_t * o);
+
 /** get the current confidence