BarkSpectrogram Matrix_to_BarkSpectrogram (Matrix me) {
try {
autoBarkSpectrogram thee = BarkSpectrogram_create (my xmin, my xmax, my nx, my dx, my x1,
my ymin, my ymax, my ny, my dy, my y1);
NUMmatrix_copyElements (my z, thy z, 1, my ny, 1, my nx);
return thee.transfer();
} catch (MelderError) {
Melder_throw (me, U": not converted to BarkSpectrogram.");
}
}
autoBarkSpectrogram Sound_to_BarkSpectrogram (Sound me, double analysisWidth, double dt, double f1_bark, double fmax_bark, double df_bark) {
try {
double nyquist = 0.5 / my dx, samplingFrequency = 2 * nyquist;
double windowDuration = 2 * analysisWidth; /* gaussian window */
double zmax = NUMhertzToBark2 (nyquist);
double fmin_bark = 0;
// Check defaults.
if (f1_bark <= 0) {
f1_bark = 1;
}
if (fmax_bark <= 0) {
fmax_bark = zmax;
}
if (df_bark <= 0) {
df_bark = 1;
}
fmax_bark = MIN (fmax_bark, zmax);
long numberOfFilters = lround ( (fmax_bark - f1_bark) / df_bark);
if (numberOfFilters <= 0) {
Melder_throw (U"The combination of filter parameters is not valid.");
}
long numberOfFrames; double t1;
Sampled_shortTermAnalysis (me, windowDuration, dt, & numberOfFrames, & t1);
autoSound sframe = Sound_createSimple (1, windowDuration, samplingFrequency);
autoSound window = Sound_createGaussian (windowDuration, samplingFrequency);
autoBarkSpectrogram thee = BarkSpectrogram_create (my xmin, my xmax, numberOfFrames, dt, t1, fmin_bark, fmax_bark, numberOfFilters, df_bark, f1_bark);
autoMelderProgress progess (U"BarkSpectrogram analysis");
for (long iframe = 1; iframe <= numberOfFrames; iframe++) {
double t = Sampled_indexToX (thee.get(), iframe);
Sound_into_Sound (me, sframe.get(), t - windowDuration / 2.0);
Sounds_multiply (sframe.get(), window.get());
Sound_into_BarkSpectrogram_frame (sframe.get(), thee.get(), iframe);
if (iframe % 10 == 1) {
Melder_progress ( (double) iframe / numberOfFrames, U"BarkSpectrogram analysis: frame ",
iframe, U" from ", numberOfFrames, U".");
}
}
_Spectrogram_windowCorrection ((Spectrogram) thee.get(), window -> nx);
return thee;
} catch (MelderError) {
Melder_throw (me, U": no BarkSpectrogram created.");
}
}
BarkSpectrogram BarkFilter_to_BarkSpectrogram (BarkFilter me) {
try {
autoBarkSpectrogram thee = BarkSpectrogram_create (my xmin, my xmax, my nx, my dx, my x1, my ymin, my ymax, my ny, my dy, my y1);
for (long i = 1; i <= my ny; i++) {
for (long j = 1; j <= my nx; j++) {
thy z[i][j] = 4e-10 * pow (10, my z[i][j] / 10);
}
}
return thee.transfer ();
} catch (MelderError) {
Melder_throw (U"BarkSpectrogram not created.");
}
}
