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"
Include dependency graph for libxtract.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. More... | |
| 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. More... | |
| int | xtract_init_bark (int N, double sr, int *band_limits) |
| A function to initialise bark filter bounds. More... | |
| int | xtract_init_fft (int N, int feature_name) |
| An initialisation function for functions using FFT. More... | |
| void | xtract_free_fft (void) |
| Free memory used for fft plans. More... | |
| double * | xtract_init_window (const int N, const int type) |
| Make a window of a given type and return a pointer to it. More... | |
| void | xtract_free_window (double *window) |
| Free a window as allocated by xtract_make_window() More... | |
| xtract_function_descriptor_t * | xtract_make_descriptors () |
| int | xtract_free_descriptors (xtract_function_descriptor_t *fd) |
Detailed Description
main header file and API definition
