static void Sound_into_BarkSpectrogram_frame (Sound me, BarkSpectrogram thee, long frame) {
autoSpectrum him = Sound_to_Spectrum_power (me);
long numberOfFrequencies = his nx;
autoNUMvector<double> z (1, numberOfFrequencies);
for (long ifreq = 1; ifreq <= numberOfFrequencies; ifreq++) {
double fhz = his x1 + (ifreq - 1) * his dx;
z[ifreq] = thy v_hertzToFrequency (fhz);
}
for (long i = 1; i <= thy ny; i++) {
double p = 0;
double z0 = thy y1 + (i - 1) * thy dy;
double *pow = his z[1]; // TODO ??
for (long ifreq = 1; ifreq <= numberOfFrequencies; ifreq++) {
// Sekey & Hanson filter is defined in the power domain.
// We therefore multiply the power with a (and not a^2).
// integral (F(z),z=0..25) = 1.58/9
double a = NUMsekeyhansonfilter_amplitude (z0, z[ifreq]);
p += a * pow[ifreq] ;
}
thy z[i][frame] = p;
}
}
// xmin, xmax in hz versus bark/mel or lin
void BandFilterSpectrogram_drawFrequencyScale (BandFilterSpectrogram me, Graphics g, double xmin, double xmax, double ymin, double ymax, int garnish) {
if (xmin < 0 || xmax < 0 || ymin < 0 || ymax < 0) {
Melder_warning (U"Frequencies must be >= 0.");
return;
}
// scale is in hertz
if (xmin >= xmax) { // autoscaling
xmin = 0;
xmax = my v_frequencyToHertz (my ymax);
}
if (ymin >= ymax) { // autoscaling
ymin = my ymin;
ymax = my ymax;
}
long n = 2000;
Graphics_setInner (g);
Graphics_setWindow (g, xmin, xmax, ymin, ymax);
double dx = (xmax - xmin) / (n - 1);
double x1 = xmin, y1 = my v_hertzToFrequency (x1);
for (long i = 2; i <= n; i++) {
double x2 = x1 + dx, y2 = my v_hertzToFrequency (x2);
if (NUMdefined (y1) && NUMdefined (y2)) {
double xo1, yo1, xo2, yo2;
if (NUMclipLineWithinRectangle (x1, y1, x2, y2, xmin, ymin, xmax, ymax, &xo1, &yo1, &xo2, &yo2)) {
Graphics_line (g, xo1, yo1, xo2, yo2);
}
}
x1 = x2; y1 = y2;
}
Graphics_unsetInner (g);
if (garnish) {
Graphics_drawInnerBox (g);
Graphics_marksLeft (g, 2, 1, 1, 0);
Graphics_textLeft (g, 1, Melder_cat (U"Frequency (", my v_getFrequencyUnit (), U")"));
Graphics_marksBottom (g, 2, 1, 1, 0);
Graphics_textBottom (g, 1, U"Frequency (Hz)");
}
}
void MelSpectrogram_drawTriangularFilterFunctions (MelSpectrogram me, Graphics g, bool xIsHertz, int fromFilter, int toFilter, double zmin, double zmax, bool yscale_dB, double ymin, double ymax, int garnish) {
double xmin = zmin, xmax = zmax;
if (zmin >= zmax) {
zmin = my ymin; zmax = my ymax; // mel
xmin = xIsHertz ? my v_frequencyToHertz (zmin) : zmin;
xmax = xIsHertz ? my v_frequencyToHertz (zmax) : zmax;
}
if (xIsHertz) {
zmin = my v_hertzToFrequency (xmin); zmax = my v_hertzToFrequency (xmax);
}
if (ymin >= ymax) {
ymin = yscale_dB ? -60 : 0;
ymax = yscale_dB ? 0 : 1;
}
fromFilter = fromFilter <= 0 ? 1 : fromFilter;
toFilter = toFilter <= 0 || toFilter > my ny ? my ny : toFilter;
if (fromFilter > toFilter) {
fromFilter = 1; toFilter = my ny;
}
long n = xIsHertz ? 1000 : 500;
autoNUMvector<double> xz (1, n), xhz (1,n), y (1, n);
Graphics_setInner (g);
Graphics_setWindow (g, xmin, xmax, ymin, ymax);
double dz = (zmax - zmin) / (n - 1);
for (long iz = 1; iz <= n; iz++) {
double f = zmin + (iz - 1) * dz;
xz[iz] = f;
xhz[iz] = my v_frequencyToHertz (f); // just in case we need the linear scale
}
for (long ifilter = fromFilter; ifilter <= toFilter; ifilter++) {
double zc = Matrix_rowToY (me, ifilter), zl = zc - my dy, zh = zc + my dy;
double xo1, yo1, xo2, yo2;
if (yscale_dB) {
for (long iz = 1; iz <= n; iz++) {
double z = xz[iz];
double amp = NUMtriangularfilter_amplitude (zl, zc, zh, z);
y[iz] = yscale_dB ? (amp > 0 ? 20 * log10 (amp) : ymin - 10) : amp;
}
double x1 = xIsHertz ? xhz[1] : xz[1], y1 = y[1];
if (NUMdefined (y1)) {
for (long iz = 1; iz <= n; iz++) {
double x2 = xIsHertz ? xhz[iz] : xz[iz], y2 = y[iz];
if (NUMdefined (y2)) {
if (NUMclipLineWithinRectangle (x1, y1, x2, y2, xmin, ymin, xmax, ymax, &xo1, &yo1, &xo2, &yo2)) {
Graphics_line (g, xo1, yo1, xo2, yo2);
}
}
x1 = x2; y1 = y2;
}
}
} else {
double x1 = xIsHertz ? my v_frequencyToHertz (zl) : zl;
double x2 = xIsHertz ? my v_frequencyToHertz (zc) : zc;
if (NUMclipLineWithinRectangle (x1, 0, x2, 1, xmin, ymin, xmax, ymax, &xo1, &yo1, &xo2, &yo2)) {
Graphics_line (g, xo1, yo1, xo2, yo2);
}
double x3 = xIsHertz ? my v_frequencyToHertz (zh) : zh;
if (NUMclipLineWithinRectangle (x2, 1, x3, 0, xmin, ymin, xmax, ymax, &xo1, &yo1, &xo2, &yo2)) {
Graphics_line (g, xo1, yo1, xo2, yo2);
}
}
}
Graphics_unsetInner (g);
if (garnish) {
Graphics_drawInnerBox (g);
Graphics_marksBottom (g, 2, 1, 1, 0);
Graphics_marksLeftEvery (g, 1, yscale_dB ? 10 : 0.5, 1, 1, 0);
Graphics_textLeft (g, 1, yscale_dB ? U"Amplitude (dB)" : U"Amplitude");
Graphics_textBottom (g, 1, Melder_cat (U"Frequency (", ( xIsHertz ? U"Hz" : my v_getFrequencyUnit () ), U")"));
}
}
void BarkSpectrogram_drawSekeyHansonFilterFunctions (BarkSpectrogram me, Graphics g, bool xIsHertz, int fromFilter, int toFilter, double zmin, double zmax, bool yscale_dB, double ymin, double ymax, int garnish) {
double xmin = zmin, xmax = zmax;
if (zmin >= zmax) {
zmin = my ymin; zmax = my ymax;
xmin = xIsHertz ? my v_frequencyToHertz (zmin) : zmin;
xmax = xIsHertz ? my v_frequencyToHertz (zmax) : zmax;
}
if (xIsHertz) {
zmin = my v_hertzToFrequency (xmin); zmax = my v_hertzToFrequency (xmax);
}
if (ymin >= ymax) {
ymin = yscale_dB ? -60 : 0;
ymax = yscale_dB ? 0 : 1;
}
fromFilter = fromFilter <= 0 ? 1 : fromFilter;
toFilter = toFilter <= 0 || toFilter > my ny ? my ny : toFilter;
if (fromFilter > toFilter) {
fromFilter = 1; toFilter = my ny;
}
long n = xIsHertz ? 1000 : 500;
autoNUMvector<double> xz (1, n), xhz (1,n), y (1, n);
Graphics_setInner (g);
Graphics_setWindow (g, xmin, xmax, ymin, ymax);
double dz = (zmax - zmin) / (n - 1);
for (long iz = 1; iz <= n; iz++) {
double f = zmin + (iz - 1) * dz;
xz[iz] = f;
xhz[iz] = my v_frequencyToHertz (f); // just in case we need the linear scale
}
for (long ifilter = fromFilter; ifilter <= toFilter; ifilter++) {
double zMid = Matrix_rowToY (me, ifilter);
for (long iz = 1; iz <= n; iz++) {
double z = xz[iz] - (zMid - 0.215);
double amp = 7 - 7.5 * z - 17.5 * sqrt (0.196 + z * z);
y[iz] = yscale_dB ? amp : pow (10, amp / 10);
}
// the drawing
double x1 = xIsHertz ? xhz[1] : xz[1], y1 = y[1];
for (long iz = 2; iz <= n; iz++) {
double x2 = xIsHertz ? xhz[iz] : xz[iz], y2 = y[iz];
if (NUMdefined (x1) && NUMdefined (x2)) {
double xo1, yo1, xo2, yo2;
if (NUMclipLineWithinRectangle (x1, y1, x2, y2, xmin, ymin, xmax, ymax, &xo1, &yo1, &xo2, &yo2)) {
Graphics_line (g, xo1, yo1, xo2, yo2);
}
}
x1 = x2; y1 = y2;
}
}
Graphics_unsetInner (g);
if (garnish) {
double distance = yscale_dB ? 10 : 0.5;
Graphics_drawInnerBox (g);
Graphics_marksBottom (g, 2, 1, 1, 0);
Graphics_marksLeftEvery (g, 1, distance, 1, 1, 0);
Graphics_textLeft (g, 1, yscale_dB ? U"Amplitude (dB)" : U"Amplitude");
Graphics_textBottom (g, 1, Melder_cat (U"Frequency (", xIsHertz ? U"Hz" : my v_getFrequencyUnit (), U")"));
}
}
