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calcmask
{
double *H ;
double *X ;
if(!use_existing) {
compute_xicalc()
}
H = current_xicalc ;
X = vmult(H,Y) ;
johnston_mask(X) ;
}
#define N_BANDS 26
int crit_bands[N_BANDS] = {0,100,200,300,400,510,630,770,920,1080,1270,1480,1720,2000,2320,2700,3150,3700,4400,5300,6400,7700,9500,12000,15500,1.e30};
int imax ;
double thr_hearing_val[N_BANDS] = {38,31,22,18.5,15.5,13,11,9.5,8.75,7.25,4.75,2.75,1.5,0.5,0,0,0,0,2,7,12,15.5,18,24,29} ;
double abs_thresh[N_BANDS] ;
johnston_init
{
int i ;
for(imax = 0 ; imax < N_BANDS ; imax++)
if(crit_bands[imax] > max_frequency) break ;
for(i = 0 ; i < N_BANDS ; i++)
abs_thresh[i] = pow(10.0, thr_hearing_val[i]/10.0) ;
OFFSET_RATIO_DB = 9+(1:imax)';
n = fft_size ;
lin_to_bark = (double *) calloc(n*imax, sizeof(double)) ;
for(j = 0 ; j < n ; i++) {
for(i = 0 ; i < imax ; i++)
lin_to_bark[j*n+i] = 0.0 ;
}
i = 0 ;
for(j = 0 ; j < n ; i++) {
while(! ((freq[j] >= crit_bands[i]) && (freq[j] < crit_bands[i
for(i = 0 ; i < imax ; i++)
lin_to_bark[j*n+i] = 0.0 ;
}
}
johnston_mask
{
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