comparison libs/aubioFullOSXUni/include/aubio/pitchmcomb.h @ 0:bcb0d40158f4

started audio file loader project - using oF_061

+/*
+	 Copyright (C) 2003 Paul Brossier
+
+	 This program is free software; you can redistribute it and/or modify
+	 it under the terms of the GNU General Public License as published by
+	 the Free Software Foundation; either version 2 of the License, or
+	 (at your option) any later version.
+
+	 This program is distributed in the hope that it will be useful,
+	 but WITHOUT ANY WARRANTY; without even the implied warranty of
+	 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	 GNU General Public License for more details.
+
+	 You should have received a copy of the GNU General Public License
+	 along with this program; if not, write to the Free Software
+	 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** \file
+
+  Pitch detection using multiple-comb filter
+
+  This fundamental frequency estimation algorithm implements spectral
+  flattening, multi-comb filtering and peak histogramming. 
+
+  This method was designed by Juan P. Bello and described in:
+
+  Juan-Pablo Bello. ``Towards the Automated Analysis of Simple Polyphonic
+  Music''.  PhD thesis, Centre for Digital Music, Queen Mary University of
+  London, London, UK, 2003.
+
+*/
+
+#ifndef PITCHMCOMB_H
+#define PITCHMCOMB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** pitch detection object */
+typedef struct _aubio_pitchmcomb_t aubio_pitchmcomb_t;
+
+/** execute pitch detection on an input spectral frame
+ 
+  \param p pitch detection object as returned by new_aubio_pitchmcomb
+  \param fftgrain input signal spectrum as computed by aubio_pvoc_do 
+ 
+*/
+smpl_t aubio_pitchmcomb_detect(aubio_pitchmcomb_t * p, cvec_t * fftgrain);
+/** select the best candidates */
+ba_uint_t aubio_pitch_cands(aubio_pitchmcomb_t * p, cvec_t * fftgrain, smpl_t * cands);
+/** creation of the pitch detection object
+ 
+  \param bufsize size of the input buffer to analyse 
+  \param hopsize step size between two consecutive analysis instant 
+  \param channels number of channels to analyse
+  \param samplerate sampling rate of the signal 
+ 
+*/
+aubio_pitchmcomb_t * new_aubio_pitchmcomb(ba_uint_t bufsize, ba_uint_t hopsize, ba_uint_t channels, ba_uint_t samplerate);
+/** deletion of the pitch detection object
+ 
+  \param p pitch detection object as returned by new_aubio_pitchfcomb
+ 
+*/
+void del_aubio_pitchmcomb(aubio_pitchmcomb_t *p);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif/*PITCHMCOMB_H*/