mgc2mgc.c

语音信号处理工具包,里面提供了很多有用的操作。这是最新版本

/*
  ----------------------------------------------------------------
	Speech Signal Processing Toolkit (SPTK): version 3.0
			 SPTK Working Group

		   Department of Computer Science
		   Nagoya Institute of Technology
				and
    Interdisciplinary Graduate School of Science and Engineering
		   Tokyo Institute of Technology
		      Copyright (c) 1984-2000
			All Rights Reserved.

  Permission is hereby granted, free of charge, to use and
  distribute this software and its documentation without
  restriction, including without limitation the rights to use,
  copy, modify, merge, publish, distribute, sublicense, and/or
  sell copies of this work, and to permit persons to whom this
  work is furnished to do so, subject to the following conditions:

    1. The code must retain the above copyright notice, this list
       of conditions and the following disclaimer.

    2. Any modifications must be clearly marked as such.

  NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF TECHNOLOGY,
  SPTK WORKING GROUP, AND THE CONTRIBUTORS TO THIS WORK DISCLAIM
  ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
  SHALL NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF
  TECHNOLOGY, SPTK WORKING GROUP, NOR THE CONTRIBUTORS BE LIABLE
  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
  DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  PERFORMANCE OF THIS SOFTWARE.
 ----------------------------------------------------------------
*/

/************************************************************************
*									*
*    Frequency and Generalized Cepstral Transformation			*
*									*
*					1996.1  K.Koishida		*
*									*
*	usage:								*
*		mgc2mgc [ options ] [ infile ] > stdout			*
*	options:							*
*		-m  m    : order of generalized cepstrum (input)   [25]	*
*		-a  a    : alpha of generalized cepstrum (input)  [0.0]	*
*		-g  g    : gamma of generalized cepstrum (input)  [0.0]	*
*		-n       : regard input as normalized			*
*				mel-generalized cepstrum 	[FALSE]	*
*		-u	 : regard input as multiplied by gamma  [FALSE] *
*		-M  M    : order of generalized cepstrum (output)  [25]	*
*		-A  A    : alpha of generalized cepstrum (output) [0.0]	*
*		-G  G    : gamma of generalized cepstrum (output) [1.0]	*
*		-N  N    : regard output as normalized			*
*				mel-generalized cepstrum 	[FALSE]	*
*		-U	 : regard output as multiplied by gamma [FALSE] *
*	infile:								*
*		mel-generalized cepstrum				*
*		    , c(0), c(1), ..., c(m),				*
*	stdout:								*
*		mel-generalized cepstrum				*
*		    , c'(0)(=c(0)), c'(1), ..., c'(M),			*
*	notice:								*
*		if g > 1.0, g = -1 / g					*
*		if G > 1.0, G = -1 / G					*
*	require:							*
*		mgc2mgc(), gnorm(), ignorm()				*
*									*
************************************************************************/

static char *rcs_id = "$Id: mgc2mgc.c,v 1.2 2002/12/25 05:31:34 sako Exp $";


/*  Standard C Libraries  */
#include <stdio.h>
#include <string.h>
#include <SPTK.h>


typedef enum _Boolean {FA, TR} Boolean;
char *BOOL[] = {"FALSE", "TRUE"};


/*  Required Functions  */
void	mgc2mgc(), gnorm(), ignorm();


/*  Default Values  */
#define ORDER1		25
#define ORDER2		25
#define ALPHA1		0.0
#define ALPHA2		0.0
#define GAMMA1		0.0
#define GAMMA2		1.0
#define NORMFLG1	FA
#define NORMFLG2	FA
#define MULGFLG1	FA
#define MULGFLG2	FA


/*  Command Name  */
char	*cmnd;


void usage(int status)
{
    fprintf(stderr, "\n");
    fprintf(stderr, " %s - frequency and generalized cepstral transformation\n",cmnd);
    fprintf(stderr, "\n");
    fprintf(stderr, "  usage:\n");
    fprintf(stderr, "       %s [ options ] [ infile ] > stdout\n", cmnd);
    fprintf(stderr, "  options:\n");
    fprintf(stderr, "       -m m  : order of mel-generalized cepstrum (input)            [%d]\n", ORDER1);
    fprintf(stderr, "       -a a  : alpha of mel-generalized cepstrum (input)            [%g]\n", ALPHA1);
    fprintf(stderr, "       -g g  : gamma of mel-generalized cepstrum (input)            [%g]\n", GAMMA1);
    fprintf(stderr, "       -n    : regard input as normalized mel-generalized cepstrum  [%s]\n", BOOL[NORMFLG1]);
    fprintf(stderr, "       -u    : regard input as multiplied by gamma                  [%s]\n", BOOL[MULGFLG1]);
    fprintf(stderr, "       -M M  : order of mel-generalized cepstrum (output)           [%d]\n", ORDER2);
    fprintf(stderr, "       -A A  : alpha of mel-generalized cepstrum (output)           [%g]\n", ALPHA2);
    fprintf(stderr, "       -G G  : gamma of mel-generalized cepstrum (output)           [%g]\n", GAMMA2);
    fprintf(stderr, "       -N    : regard output as normalized mel-generalized cepstrum [%s]\n", BOOL[NORMFLG2]);
    fprintf(stderr, "       -U    : regard output as multiplied by gamma                 [%s]\n", BOOL[MULGFLG2]);
    fprintf(stderr, "       -h    : print this message\n");
    fprintf(stderr, "  infile:\n");
    fprintf(stderr, "       mel-generalized cepstrum (float)                   [stdin]\n");
    fprintf(stderr, "  stdout:\n");
    fprintf(stderr, "       transformed mel-generalized cepstrum (float)\n");
    fprintf(stderr, "  notice:\n");
    fprintf(stderr, "       if g > 1.0, g = -1 / g\n");
    fprintf(stderr, "       if G > 1.0, G = -1 / G\n");
    fprintf(stderr, "\n");
    exit(status);
}

void main(int argc, char **argv)
{
    int		m1 = ORDER1, m2 = ORDER2, i;
    double	a1 = ALPHA1, a2 = ALPHA2, g1 = GAMMA1, g2 = GAMMA2, 
                *c1, *c2, atof();
    Boolean	norm1 = NORMFLG1, norm2 = NORMFLG2, mulg1 = MULGFLG1,mulg2 = MULGFLG2;
    FILE	*fp = stdin;
    
    if ((cmnd = strrchr(argv[0], '/')) == NULL)
	cmnd = argv[0];
    else
	cmnd++;
    while (--argc)
	if (**++argv == '-') {
	    switch (*(*argv+1)) {
		case 'm':
		    m1 = atoi(*++argv);
		    --argc;
		    break;
		case 'M':
		    m2 = atoi(*++argv);
		    --argc;
		    break;
		case 'a':
		    a1 = atof(*++argv);
		    --argc;
		    break;
		case 'A':
		    a2 = atof(*++argv);
		    --argc;
		    break;
		case 'g':
		    g1 = atof(*++argv);
		    --argc;
		    if(g1 > 1.0) g1 = -1.0 / g1;
		    break;
		case 'G':
		    g2 = atof(*++argv);
		    --argc;
		    if(g2 > 1.0) g2 = -1.0 / g2;
		    break;
		case 'n':
		    norm1 = 1 - norm1;
		    break;
		case 'N':
		    norm2 = 1 - norm2;
		    break;
		case 'u':
		    mulg1 = 1 - mulg1;
		    break;
		case 'U':
		    mulg2 = 1 - mulg2;
		    break;
		case 'h':
		    usage(0);
		default:
		    fprintf(stderr, "%s : Invalid option '%c' !\n", cmnd, *(*argv+1));
		    usage(1);
		}
	}
	else 
	    fp = getfp(*argv, "r");

    c1 = dgetmem(m1+m2+2);
    c2 = c1 + m1 + 1;
    
    while (freadf(c1, sizeof(*c1), m1+1, fp) == m1+1){

	if(norm1)
	    ignorm(c1, c1, m1, g1);
	else if (mulg1)
	    c1[0] = (c1[0] - 1.0) / g1;

	if(mulg1)
	    for(i = m1;i >= 1; i--) c1[i] /= g1;

	mgc2mgc(c1, m1, a1, g1, c2, m2, a2, g2);

	if(norm2)
	    gnorm(c2, c2, m2, g2);
	else if (mulg2)
	    c1[0] = c1[0] * g2 + 1.0;

	if(mulg2)
	    for(i = m2;i >= 1; i--) c2[i] *= g2;

	fwritef(c2, sizeof(*c2), m2+1, stdout);
    }
    exit(0);
}