annotate examples/simpletest/simpletest.c @ 124:fc4bc58b92da

- fixed xtract_spread() -- now just calls xtract_spectral_variance()

/* libxtract feature extraction library
 *  
 * Copyright (C) 2006 Jamie Bullock
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
 * USA.
 */

#include "xtract/libxtract.h"
#include <stdio.h>

int main(void) {

    float mean = 0, vector[] = {.1, .2, .3, .4, -.5, -.4, -.3, -.2, -.1},
          spectrum[10];
    int n, N = 9;
    float argf[4];

    argf[0] = 8000.f;
    argf[1] = XTRACT_MAGNITUDE_SPECTRUM;
    argf[2] = 0.f;
    argf[3] = 0.f;
    
    xtract[XTRACT_MEAN]((void *)&vector, N, NULL, (void *)&mean);
    xtract_init_fft(N, XTRACT_SPECTRUM);
    xtract[XTRACT_SPECTRUM]((void *)&vector, N, &argf[0], (void *)&spectrum[0]);

    printf("\nThe mean of [.1, .2, .3, .4, -.5, -.4, -.3, -.2, -.1] = %.1f\n\n", mean);
    printf("\nResults of xtract_spectrum():\n");

    for(n = 0; n < N; n++){
        printf("%.3f\t", spectrum[n]);
    }
    printf("\n");

    return 0;
    
}