c@250: #ifndef _LIB_MFCC_H
c@250: #define _LIB_MFCC_H
c@250: 
c@250: #define MFCC    6
c@250: 
c@250: typedef struct mfcc_t {
c@250: 	
c@250: 	/* Filter bank parameters */
c@250: 	double  lowestFrequency; 
c@250: 	int     linearFilters; 
c@250: 	double  linearSpacing;
c@250: 	int     logFilters;
c@250: 	double  logSpacing;
c@250: 	
c@250: 	/* FFT length */
c@250: 	int     fftSize;
c@250: 	
c@250: 	/* Analysis window length*/
c@250: 	int     windowSize;
c@250: 	
c@250: 	int     totalFilters;
c@250: 	
c@250: 	/* Misc. */
c@250: 	int     samplingRate;
c@250: 	int     nceps;
c@250: 	
c@250: 	/* MFCC vector */
c@250: 	double  *ceps;
c@250: 	
c@250: 	double  **mfccDCTMatrix;
c@250: 	double  **mfccFilterWeights;
c@250: 	
c@250: 	/* The analysis window */
c@250: 	double  *window;
c@250: 	
c@250: 	/* For the FFT */
c@250: 	double* imagIn;		// always zero
c@250: 	double* realOut;
c@250: 	double* imagOut;
c@250: 	
c@250: 	/* Set if user want C0 */
c@250: 	int WANT_C0;
c@250: 	
c@250: } mfcc_t;
c@250: 
c@250: extern mfcc_t* init_mfcc(int fftSize, int nceps , int samplingRate, int WANT_C0);
c@250: extern int     do_mfcc(mfcc_t* mfcc_p, double* frame, int length);
c@250: extern void    close_mfcc(mfcc_t* mfcc_p);
c@250: 
c@250: #endif
c@250: