f0_structs.h

speech signal process tools

/*
 * This material contains unpublished, proprietary software of 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) 1990-1996 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:  David Talkin
 * Checked by:
 * Revised by:
 * @(#)f0_structs.h	1.7 9/9/96 ERL
 * Brief description:
 *
 */


/* f0_structs.h */

#define BIGSORD 100

typedef struct cross_rec { /* for storing the crosscorrelation information */
	float	rms;	/* rms energy in the reference window */
	float	maxval;	/* max in the crosscorr. fun. q15 */
	short	maxloc; /* lag # at which max occured	*/
	short	firstlag; /* the first non-zero lag computed */
	float	*correl; /* the normalized corsscor. fun. q15 */
} Cross;

typedef struct dp_rec { /* for storing the DP information */
	short	ncands;	/* # of candidate pitch intervals in the frame */
	short	*locs; /* locations of the candidates */
	float	*pvals; /* peak values of the candidates */
	float	*mpvals; /* modified peak values of the candidates */
	short	*prept; /* pointers to best previous cands. */
	float	*dpvals; /* cumulative error for each candidate */
} Dprec;

typedef struct windstat_rec {  /* for lpc stat measure in a window */
    float rho[BIGSORD+1];
    float err;
    float rms;
} Windstat;

typedef struct sta_rec {  /* for stationarity measure */
  float *stat;
  float *rms;
  float *rms_ratio;
} Stat;


typedef struct frame_rec{
  Cross *cp;
  Dprec *dp;
  float rms;
  struct frame_rec *next;
  struct frame_rec *prev;
} Frame;

extern   Frame *alloc_frame();