tracks.h

speech signal process tools

/* Copyright (c) 1995 Entropic Research Laboratory, Inc. */
/* @(#)tracks.h	1.2 9/26/95 ATT/ERL/ESI */
/*
 * This material contains unpublished, proprietary software of 
 * Entropic Research Laboratory, Inc. Any reproduction, distribution, 
 * or publication of this work must be authorized in writing by Entropic 
 * Research Laboratory, Inc., and must bear the notice: 
 *
 *    "Copyright (c) 1987-1990  AT&T, Inc.
 *    "Copyright (c) 1986-1990  Entropic Speech, Inc. 
 *    "Copyright (c) 1990-1993  Entropic Research Laboratory, Inc. 
 *                   All rights reserved"
 *
 * The copyright notice above does not evidence any actual or intended 
 * publication of this source code.     
 *
 *
 * Written by:  
 * Checked by:
 * Revised by:
 *
 * Brief description:
 *
 */



#define DEB_PAUSE	8	/* debug levels */
#define DEB_LPC_PARS	4
#define DEB_PARAMS	2
#define DEB_ENTRY	1
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#define PI 3.1415927


/* Structure definitions for the formant tracker.. */

typedef struct form_latt { 
        /* structure of a DP lattice node for formant tracking */
	short ncand; /* # of candidate mappings for this frame */
	short **cand;      /* pole-to-formant map-candidate array */
	short *prept;	 /* backpointer array for each frame */
	double *cumerr; 	 /* cum. errors associated with each cand. */
} FORM;

typedef struct pole_array {   /* structure to hold raw LPC analysis data */
	double rms;    /* rms for current LPC analysis frame */
	double rms2;    /* rms for current F0 analysis frame */
	double f0;     /* fundamental frequency estimate for this frame */
	double pv;		/* probability that frame is voiced */
	double change; /* spec. distance between current and prev. frames */
	short npoles; /* # of complex poles from roots of LPC polynomial */
	double *freq;  /* array of complex pole frequencies (Hz) */
	double *band;  /* array of complex pole bandwidths (Hz) */
} POLE;
/* End of structure definitions for the formant tracker. */