ref: 641b9687494c1351b1f085171c8786e156434630
dir: /testsuite/lpc_test_main.c/
/*************************************************************************/
/* */
/* Language Technologies Institute */
/* Carnegie Mellon University */
/* Copyright (c) 2001 */
/* 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. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* CARNEGIE MELLON UNIVERSITY 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 CARNEGIE MELLON UNIVERSITY 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 */
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/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Author: Alan W Black (awb@cs.cmu.edu) */
/* Date: August 2000 */
/*************************************************************************/
/* */
/* Resynthesize from lpc coefficients plus a residual */
/* */
/*************************************************************************/
#include <stdio.h>
#include "cst_wave.h"
#include "cst_track.h"
#include "cst_sigpr.h"
int main(int argc, char **argv)
{
/* need that cool argument parser */
cst_wave *w,*res;
cst_track *lpc;
cst_lpcres *lpcres;
int i,j;
float lpcmin = -2.709040;
float lpcrange = 2.328840+2.709040;
unsigned short *bbb;
if (argc != 4)
{
fprintf(stderr,"usage: lpc_test LPC RESIDUAL WAVEFILE\n");
return 1;
}
lpc = new_track();
cst_track_load_est(lpc,argv[1]);
res = new_wave();
cst_wave_load_riff(res,argv[2]);
lpcres = new_lpcres();
lpcres_resize_frames(lpcres,lpc->num_frames);
lpcres->num_channels = lpc->num_channels-1;
for (i=0; i<lpc->num_frames; i++)
{
bbb = cst_alloc(unsigned short,lpc->num_channels-1);
for (j=1; j<lpc->num_channels; j++)
bbb[j-1] = (unsigned short)
(((lpc->frames[i][j]-lpcmin)/lpcrange)*65535);
lpcres->frames[i] = bbb;
lpcres->sizes[i] = track_frame_shift(lpc,i)*res->sample_rate;
}
lpcres_resize_samples(lpcres,res->num_samples);
lpcres->lpc_min = lpcmin;
lpcres->lpc_range = lpcrange;
lpcres->sample_rate = res->sample_rate;
for (i=0; i<res->num_samples; i++)
lpcres->residual[i] = cst_short_to_ulaw(res->samples[i]);
w = lpc_resynth(lpcres);
cst_wave_save_riff(w,argv[3]);
return 0;
}