Changeset 7c6c806d for src

Timestamp:

Sep 6, 2007, 7:32:13 PM (17 years ago)

Author:

Amaury Hazan <mahmoudax@gmail.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:

7a46bf6, fdf39ba

Parents:

71b1b4b

Message:

minor changes

Location:

src

Files:

• Makefile.am (modified) (2 diffs)
• filterbank.c (modified) (1 diff)
• filterbank.h (modified) (2 diffs)
• mfcc.c (modified) (3 diffs)
• mfcc.h (modified) (3 diffs)

src/Makefile.am

@@ -22 +22 @@
         onset.h \
         tempo.h \
-        filter.h 
+        filter.h \
+        mfcc.h
 
 nodist_pkginclude_HEADERS = config.h
@@ -71 +72 @@
         filter.c \
         filter.h \
+        mfcc.h \
+        mfcc.c 
 
 AM_CFLAGS = @AUBIO_CFLAGS@ @FFTWLIB_CFLAGS@ @SAMPLERATE_CFLAGS@

src/filterbank.c

@@ -21 +21 @@
 */
 
+#include "aubio_priv.h"
 #include "filterbank.h"
+
+
+// Struct Declaration
+
+/** \brief A structure to store a set of n_filters Mel filters */
+typedef struct aubio_mel_filter_ {
+    int n_filters;
+    smpl_t **filters;
+};
 
 // Initialization

src/filterbank.h

@@ -23 +23 @@
 #define AUBIOFILTERBANK_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-// Struct Declaration
 
-/** \brief A structure to store a set of n_filters Mel filters */
-typedef struct aubio_mel_filter_ {
-    int n_filters;
-    smpl_t **filters;
-} aubio_mel_filter;
+
+typedef struct aubio_mel_filter_ aubio_mel_filter;
 
 // Initialization
@@ -38 +37 @@
  * It is up to the caller to pass in a pointer to memory allocated for freq_bands arrays of length N. This function populates these arrays with magnitude coefficients representing the mel filterbank on a linear scale 
  */
-int aubio_mfcc_init(int N, float nyquist, int style, float freq_min, float freq_max, int freq_bands, smpl_t ** fft_tables);
+int aubio_mfcc_init(int N, smpl_t nyquist, int style, smpl_t freq_min, smpl_t freq_max, int freq_bands, smpl_t ** fft_tables);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif

src/mfcc.c

@@ -21 +21 @@
 */
 
+#include "aubio_priv.h"
+#include "sample.h"
+#include "fft.h"
+#include "mfcc.h"
+#include "math.h"
 
-#include "mffc.h"
+/*
+new_aubio_mfcc
+aubio_mfcc_do
+del_aubio_mfcc
+*/
 
 // Computation
+// Added last two arguments to be able to pass from example
 
-int aubio_mfcc_do(const float *data, const int N, const void *argv, float *result){
+
+
+int aubio_mfcc_do(const float *data, const int N, const void *argv, float *result, aubio_mfft_t * fft_dct, cvec_t * fftgrain_dct){
 
     aubio_mel_filter *f;
@@ -38 +50 @@
             result[filter] += data[n] * f->filters[filter][n];
         }
-        result[filter] = log(result[filter] < XTRACT_LOG_LIMIT ? XTRACT_LOG_LIMIT : result[filter]);
+        result[filter] = LOG(result[filter] < XTRACT_LOG_LIMIT ? XTRACT_LOG_LIMIT : result[filter]);
     }
 
-    //TODO: check that zero padding
+    //TODO: check that zero padding 
     for(n = filter + 1; n < N; n++) result[n] = 0; 
     
-    aubio_dct_do(result, f->n_filters, NULL, result);
+    aubio_dct_do(result, f->n_filters, NULL, result, fft_dct, fftgrain_dct);
     
     return XTRACT_SUCCESS;
 }
 
-int aubio_dct_do(const float *data, const int N, const void *argv, float *result){
+// Added last two arguments to be able to pass from example
+
+int aubio_dct_do(const float *data, const int N, const void *argv, float *result, aubio_mfft_t * fft_dct, cvec_t * fftgrain_dct){
     
     
@@ -56 +70 @@
     //TODO: fvec as input? Remove data length, N?
 
+    fvec_t * momo = new_fvec(20, 1);
+    momo->data = data;
+    
     //compute mag spectrum
-    aubio_pvoc_do (pv,data, fftgrain);
+    aubio_mfft_do (fft_dct, data, fftgrain_dct);
 
     int i;
     //extract real part of fft grain
     for(i=0; i<N ;i++){
-      result[i]= fftgrain->norm[i]*cos(fftgrain->phase[i]);
+      result[i]= fftgrain_dct->norm[0][i]*COS(fftgrain_dct->phas[0][i]);
     }
-    
-    /*
-    fftwf_plan plan;
-    
-    plan = 
-        fftwf_plan_r2r_1d(N, (float *) data, result, FFTW_REDFT00, FFTW_ESTIMATE);
-    
-    fftwf_execute(plan);
-    fftwf_destroy_plan(plan);*/
+
 
     return XTRACT_SUCCESS;

src/mfcc.h

@@ -24 +24 @@
 #define MFCC_H 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "filterbank.h"
 
-//libXtract enums
+//libXtract constants and enums
 // TODO: remove them 
+
+#define XTRACT_SQ(a) ((a) * (a))
+#define XTRACT_MIN(a, b) ((a) < (b) ? (a) : (b))
+#define XTRACT_MAX(a, b) ((a) > (b) ? (a) : (b))
+#define XTRACT_NEEDS_FFTW printf("LibXtract must be compiled with fftw support to use this function.\n")
+#define XTRACT_VERY_SMALL_NUMBER 2e-42
+#define XTRACT_LOG_LIMIT XTRACT_VERY_SMALL_NUMBER
+#define XTRACT_LOG_LIMIT_DB -96.0
+#define XTRACT_DB_SCALE_OFFSET 96.0
+#define XTRACT_VERY_BIG_NUMBER 2e42
+#define XTRACT_SR_UPPER_LIMIT 192000.0
+#define XTRACT_SR_LOWER_LIMIT 22050.0
+#define XTRACT_SR_DEFAULT 44100.0
+#define XTRACT_FUNDAMENTAL_DEFAULT 440.0
+#define XTRACT_CHECK_nyquist if(!nyquist) nyquist = XTRACT_SR_DEFAULT / 2
+#define XTRACT_CHECK_q if(!q) q = XTRACT_SR_DEFAULT / N
+#define XTRACT_IS_ODD(x) (x % 2 != 0 ? 1 : 0) 
+#define XTRACT_SR_LIMIT SR_UPPER_LIMIT
+#define XTRACT_FFT_BANDS_MIN 16
+#define XTRACT_FFT_BANDS_MAX 65536
+#define XTRACT_FFT_BANDS_DEF 1024
+#define XTRACT_SPEC_BW_MIN 0.168 /* Minimum spectral bandwidth \
+            (= SR_LOWER_LIMIT / FFT_BANDS_MAX*/ 
+#define XTRACT_SPEC_BW_MAX 12000.0 /* SR_UPPER_LIMIT / FFT_BANDS_MIN */
+#define XTRACT_SPEC_BW_DEF 43.066 /* SR_DEFAULT / FFT_BANDS_DEF */
 
 /** \brief Enumeration of feature initialisation functions */
@@ -132 +161 @@
  * The data structure pointed to by *argv must be obtained by first calling xtract_init_mfcc
  */
-int aubio_mfcc_do(const float *data, const int N, const void *argv, float *result);
+
+
+int aubio_mfcc_do(const float *data, const int N, const void *argv, float *result, aubio_mfft_t *fft_dct, cvec_t *fftgrain_dct);
 
 /** \brief Extract the Discrete Cosine transform of a time domain signal
@@ -140 +171 @@
  * \param *result: a pointer to an array containing resultant dct coefficients
  */
-int aubio_dct_do(const float *data, const int N, const void *argv, float *result);
+int aubio_dct_do(const float *data, const int N, const void *argv, float *result, aubio_mfft_t *fft_dct, cvec_t *fftgrain_dct);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif