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/*---------------------------------------------------------------------------*\
FILE........: tcontphase.c
AUTHOR......: David Rowe
DATE CREATED: 11/9/09
Test program for developing continuous phase track synthesis algorithm.
However while developing this it was discovered that synthesis_mixed()
worked just as well.
\*---------------------------------------------------------------------------*/
/*
Copyright (C) 2009 David Rowe
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License version 2.1, as
published by the Free Software Foundation. This program is
distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#define N 80 /* frame size */
#define F 160 /* frames to synthesis */
#define P 10 /* LPC order */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "sine.h"
#include "dump.h"
#include "synth.h"
#include "phase.h"
int frames;
float ak[] = {
1.000000,
-1.455836,
1.361841,
-0.879267,
0.915985,
-1.002202,
0.944103,
-0.743094,
1.053356,
-0.817491,
0.431222
};
/*---------------------------------------------------------------------------*\
switch_present()
Searches the command line arguments for a "switch". If the switch is
found, returns the command line argument where it ws found, else returns
NULL.
\*---------------------------------------------------------------------------*/
int switch_present(sw,argc,argv)
char sw[]; /* switch in string form */
int argc; /* number of command line arguments */
char *argv[]; /* array of command line arguments in string form */
{
int i; /* loop variable */
for(i=1; i<argc; i++)
if (!strcmp(sw,argv[i]))
return(i);
return 0;
}
/*---------------------------------------------------------------------------*\
MAIN
\*---------------------------------------------------------------------------*/
int main(argc,argv)
int argc;
char *argv[];
{
FILE *fout;
short buf[N];
int i,j;
int dump;
float phi_prev[MAX_AMP];
float Wo_prev, ex_phase, G;
//float ak[P+1];
COMP H[MAX_AMP];
float f0;
if (argc < 3) {
printf("\nusage: %s OutputRawSpeechFile F0\n", argv[0]);
exit(1);
}
/* Output file */
if ((fout = fopen(argv[1],"wb")) == NULL) {
printf("Error opening output speech file: %s\n",argv[1]);
exit(1);
}
f0 = atof(argv[2]);
dump = switch_present("--dump",argc,argv);
if (dump)
dump_on(argv[dump+1]);
init_decoder();
for(i=0; i<MAX_AMP; i++)
phi_prev[i] = 0.0;
Wo_prev = 0.0;
model.Wo = PI*(f0/4000.0);
G = 1000.0;
model.L = floor(PI/model.Wo);
//aks_to_H(&model, ak, G , H, P);
//for(i=1; i<=model.L; i++)
model.A[i] = sqrt(H[i].real*H[i].real + H[i].imag*H[i].imag);
//printf("L = %d\n", model.L);
//model.L = 10;
for(i=1; i<=model.L; i++) {
model.A[i] = 1000/model.L;
model.phi[i] = 0;
H[i].real = 1.0; H[i].imag = 0.0;
}
//ak[0] = 1.0;
//for(i=1; i<=P; i++)
// ak[i] = 0.0;
frames = 0;
for(j=0; j<F; j++) {
frames++;
#ifdef SWAP
/* lets make phases bounce around from frame to frame. This
could happen if H[m] is varying, for example due to frame
to frame Wo variations, or non-stationary speech.
Continous model generally results in smooth phase track
under these circumstances. */
if (j%2){
H[1].real = 1.0; H[1].imag = 0.0;
model.phi[1] = 0.0;
}
else {
H[1].real = 0.0; H[1].imag = 1.0;
model.phi[1] = PI/2;
}
#endif
//#define CONT
#ifdef CONT
synthesise_continuous_phase(Pn, &model, Sn_, 1, &Wo_prev, phi_prev);
#else
phase_synth_zero_order(5.0, H, &Wo_prev, &ex_phase);
synthesise_mixed(Pn,&model,Sn_,1);
#endif
for(i=0; i<N; i++)
buf[i] = Sn_[i];
fwrite(buf,sizeof(short),N,fout);
}
fclose(fout);
if (dump) dump_off();
return 0;
}
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