LibXtract 0.7.1
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main header file and API definition More...
#include "xtract_scalar.h"
#include "xtract_vector.h"
#include "xtract_delta.h"
#include "xtract_types.h"
#include "xtract_macros.h"
#include "xtract_helper.h"
Go to the source code of this file.
Data Structures | |
struct | _xtract_function_descriptor |
Data structure containing useful information about functions provided by LibXtract. More... | |
struct | xtract_mel_filter_ |
A structure to store a set of n_filters Mel filters. More... | |
Macros | |
#define | XTRACT_FEATURES 62 |
Typedefs | |
typedef enum type_ | xtract_type_t |
Enumeration of data types. | |
typedef enum unit_ | xtract_unit_t |
Enumeration of units. | |
typedef enum xtract_vector_ | xtract_vector_t |
Enumeration of vector format types. | |
typedef struct _xtract_function_descriptor | xtract_function_descriptor_t |
Data structure containing useful information about functions provided by LibXtract. | |
typedef struct xtract_mel_filter_ | xtract_mel_filter |
A structure to store a set of n_filters Mel filters. | |
Enumerations | |
enum | xtract_features_ { XTRACT_MEAN , XTRACT_VARIANCE , XTRACT_STANDARD_DEVIATION , XTRACT_AVERAGE_DEVIATION , XTRACT_SKEWNESS , XTRACT_KURTOSIS , XTRACT_SPECTRAL_MEAN , XTRACT_SPECTRAL_VARIANCE , XTRACT_SPECTRAL_STANDARD_DEVIATION , XTRACT_SPECTRAL_SKEWNESS , XTRACT_SPECTRAL_KURTOSIS , XTRACT_SPECTRAL_CENTROID , XTRACT_IRREGULARITY_K , XTRACT_IRREGULARITY_J , XTRACT_TRISTIMULUS_1 , XTRACT_TRISTIMULUS_2 , XTRACT_TRISTIMULUS_3 , XTRACT_SMOOTHNESS , XTRACT_SPREAD , XTRACT_ZCR , XTRACT_ROLLOFF , XTRACT_LOUDNESS , XTRACT_FLATNESS , XTRACT_FLATNESS_DB , XTRACT_TONALITY , XTRACT_CREST , XTRACT_NOISINESS , XTRACT_RMS_AMPLITUDE , XTRACT_SPECTRAL_INHARMONICITY , XTRACT_POWER , XTRACT_ODD_EVEN_RATIO , XTRACT_SHARPNESS , XTRACT_SPECTRAL_SLOPE , XTRACT_LOWEST_VALUE , XTRACT_HIGHEST_VALUE , XTRACT_SUM , XTRACT_NONZERO_COUNT , XTRACT_HPS , XTRACT_F0 , XTRACT_FAILSAFE_F0 , XTRACT_WAVELET_F0 , XTRACT_MIDICENT , XTRACT_LNORM , XTRACT_FLUX , XTRACT_ATTACK_TIME , XTRACT_DECAY_TIME , XTRACT_DIFFERENCE_VECTOR , XTRACT_AUTOCORRELATION , XTRACT_AMDF , XTRACT_ASDF , XTRACT_BARK_COEFFICIENTS , XTRACT_PEAK_SPECTRUM , XTRACT_SPECTRUM , XTRACT_AUTOCORRELATION_FFT , XTRACT_MFCC , XTRACT_DCT , XTRACT_HARMONIC_SPECTRUM , XTRACT_LPC , XTRACT_LPCC , XTRACT_SUBBANDS , XTRACT_WINDOWED , XTRACT_SMOOTHED } |
Enumeration of features, elements are used as indixes to an array of pointers to feature extracton functions. | |
enum | xtract_feature_init_ { XTRACT_INIT_MFCC = 100 , XTRACT_INIT_BARK , XTRACT_INIT_WINDOWED } |
Enumeration of feature initialisation functions. | |
enum | xtract_feature_types_ { XTRACT_SCALAR , XTRACT_VECTOR , XTRACT_DELTA } |
Enumeration of feature types. | |
enum | xtract_mfcc_types_ { XTRACT_EQUAL_GAIN , XTRACT_EQUAL_AREA } |
Enumeration of mfcc types. | |
enum | xtract_lnorm_filter_types_ { XTRACT_NO_LNORM_FILTER , XTRACT_POSITIVE_SLOPE , XTRACT_NEGATIVE_SLOPE } |
enum | xtract_return_codes_ { XTRACT_SUCCESS , XTRACT_MALLOC_FAILED , XTRACT_BAD_ARGV , XTRACT_BAD_VECTOR_SIZE , XTRACT_BAD_STATE , XTRACT_DENORMAL_FOUND , XTRACT_NO_RESULT , XTRACT_FEATURE_NOT_IMPLEMENTED , XTRACT_ARGUMENT_ERROR } |
Enumeration of return codes. | |
enum | xtract_spectrum_ { XTRACT_MAGNITUDE_SPECTRUM , XTRACT_LOG_MAGNITUDE_SPECTRUM , XTRACT_POWER_SPECTRUM , XTRACT_LOG_POWER_SPECTRUM } |
Enumeration of spectrum types. | |
enum | xtract_subband_scales_ { XTRACT_OCTAVE_SUBBANDS , XTRACT_LINEAR_SUBBANDS } |
Subband scales. | |
enum | type_ { XTRACT_FLOAT , XTRACT_FLOATARRAY , XTRACT_INT , XTRACT_MEL_FILTER } |
Enumeration of data types. | |
enum | unit_ { XTRACT_HERTZ = 2 , XTRACT_ANY_AMPLITUDE_HERTZ , XTRACT_DBFS , XTRACT_DBFS_HERTZ , XTRACT_PERCENT , XTRACT_BINS , XTRACT_SONE , XTRACT_MIDI_CENT } |
Enumeration of units. | |
enum | xtract_bool_t { XTRACT_FALSE , XTRACT_TRUE } |
Boolean. | |
enum | xtract_window_types_ { XTRACT_GAUSS , XTRACT_HAMMING , XTRACT_HANN , XTRACT_BARTLETT , XTRACT_TRIANGULAR , XTRACT_BARTLETT_HANN , XTRACT_BLACKMAN , XTRACT_KAISER , XTRACT_BLACKMAN_HARRIS } |
Window types. | |
enum | xtract_vector_ { XTRACT_SPECTRAL , XTRACT_SPECTRAL_MAGNITUDES , XTRACT_SPECTRAL_PEAKS , XTRACT_SPECTRAL_PEAKS_MAGNITUDES , XTRACT_SPECTRAL_PEAKS_FREQUENCIES , XTRACT_SPECTRAL_HARMONICS , XTRACT_SPECTRAL_HARMONICS_MAGNITUDES , XTRACT_SPECTRAL_HARMONICS_FREQUENCIES , XTRACT_AUTOCORRELATION_COEFFS , XTRACT_ARBITRARY_SERIES , XTRACT_AUDIO_SAMPLES , XTRACT_MEL_COEFFS , XTRACT_LPC_COEFFS , XTRACT_LPCC_COEFFS , XTRACT_BARK_COEFFS , XTRACT_SUBFRAMES , XTRACT_NO_DATA } |
Enumeration of vector format types. | |
Functions | |
int | xtract_init_wavelet_f0_state (void) |
An array of pointers to functions that perform the extraction. | |
int | xtract_init_mfcc (int N, double nyquist, int style, double freq_min, double freq_max, int freq_bands, double **fft_tables) |
A function to initialise a mel filter bank. | |
int | xtract_init_bark (int N, double sr, int *band_limits) |
A function to initialise bark filter bounds. | |
int | xtract_init_fft (int N, int feature_name) |
An initialisation function for functions using FFT. | |
void | xtract_free_fft (void) |
Free memory used for fft plans. | |
double * | xtract_init_window (const int N, const int type) |
Make a window of a given type and return a pointer to it. | |
void | xtract_free_window (double *window) |
Free a window as allocated by xtract_make_window() | |
xtract_function_descriptor_t * | xtract_make_descriptors () |
int | xtract_free_descriptors (xtract_function_descriptor_t *fd) |
main header file and API definition