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/* Sound_and_TextGrid_extensions.cpp
*
* Copyright (C) 1993-2022 David Weenink, 2024 Paul Boersma
*
* This code 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 code 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 work. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Intensity_extensions.h"
#include "Sound_extensions.h"
#include "Sound_and_TextGrid_extensions.h"
#include "Sound_and_Spectrum.h"
#include "Sound_to_Intensity.h"
autoIntervalTier Sound_to_IntervalTier_highMidLowIntervals (Sound me, double min, double max) {
try {
autoIntervalTier thee = IntervalTier_create (my xmin, my xmax);
double startTime = my xmin, endTime = my xmax;
bool firstInterval = true;
VEC z (my z[1]);
int level = ( z [1] > max ? 1 : z [1] < min ? -1 : 0 );
for (integer isamp = 2; isamp <= z.size; isamp ++) {
const int leveli = ( z [isamp] > max ? 1 : z [isamp] < min ? -1 : 0 );
if (leveli == level)
continue;
// new interval
endTime = my x1 + (isamp - 1 - 0.5) * my dx; // midpoint
conststring32 label = ( level == 1 ? U"High" : level == -1 ? U"Low" : U"Mid" );
if (firstInterval) {
TextInterval interval = thy intervals .at[1];
interval -> xmax = endTime;
autostring32 firstLabel = Melder_dup (label);
interval -> text = firstLabel. move();
firstInterval = false;
} else {
autoTextInterval interval = TextInterval_create (startTime, endTime, label);
thy intervals. addItem_move (interval.move());
}
startTime = endTime;
level = leveli;
}
conststring32 last_label = ( level == 1 ? U"High" : level == -1 ? U"Low" : U"Mid" );
autoTextInterval interval = TextInterval_create (startTime, my xmax, last_label);
thy intervals. addItem_move (interval.move());
return thee;
} catch (MelderError) {
Melder_throw (me, U": no IntervalTier with High/Mid/Low intervals created.");
}
}
autoTextGrid Sound_to_TextGrid_highMidLowIntervals (Sound me, double min, double max) {
try {
autoTextGrid thee = TextGrid_createWithoutTiers (my xmin, my xmax);
autoIntervalTier intervals = Sound_to_IntervalTier_highMidLowIntervals (me, min, max);
thy tiers -> addItem_move (intervals.move());
return thee;
} catch (MelderError) {
Melder_throw (me, U": no TextGrid with High/Mid/Low intervals created.");
}
}
autoSound Sound_IntervalTier_cutPartsMatchingLabel (Sound me, IntervalTier thee, conststring32 match) {
try {
/*
Count samples of the trimmed sound
*/
integer ixmin, ixmax, numberOfSamples = 0, previous_ixmax = 0;
double xmin = my xmin; // start time of output sound is start time of input sound
for (integer iint = 1; iint <= thy intervals.size; iint ++) {
TextInterval interval = thy intervals.at [iint];
if (! Melder_equ (interval -> text.get(), match)) {
numberOfSamples += Sampled_getWindowSamples (me, interval -> xmin, interval -> xmax, & ixmin, & ixmax);
/*
If two contiguous intervals have to be copied then the last sample of previous interval
and first sample of current interval might sometimes be equal
*/
if (ixmin == previous_ixmax)
-- numberOfSamples;
previous_ixmax = ixmax;
} else { // matches label
if (iint == 1) // Start time of output sound is end time of first interval
xmin = interval -> xmax;
}
}
/*
Now copy the parts. The output sound starts at xmin
*/
autoSound him = Sound_create (my ny, xmin, xmin + numberOfSamples * my dx, numberOfSamples, my dx, xmin + 0.5 * my dx);
numberOfSamples = 0;
previous_ixmax = 0;
for (integer iint = 1; iint <= thy intervals.size; iint ++) {
const TextInterval interval = thy intervals.at [iint];
if (! Melder_equ (interval -> text.get(), match)) {
Sampled_getWindowSamples (me, interval -> xmin, interval -> xmax, & ixmin, & ixmax);
if (ixmin == previous_ixmax)
ixmin ++;
previous_ixmax = ixmax;
integer numberOfSamplesToCopy = ixmax - ixmin + 1;
his z.part (1, my ny, numberOfSamples + 1, numberOfSamples + numberOfSamplesToCopy) <<= my z.part (1, my ny, ixmin, ixmax);
numberOfSamples += numberOfSamplesToCopy;
}
}
Melder_assert (numberOfSamples == his nx);
return him;
} catch (MelderError) {
Melder_throw (me, U": intervals not trimmed.");
}
}
autoTextGrid Sound_to_TextGrid_detectSilences (Sound me, double minPitch, double timeStep,
double silenceThreshold, double minSilenceDuration, double minSoundingDuration,
conststring32 silentLabel, conststring32 soundingLabel)
{
try {
const bool subtractMeanPressure = true;
autoSound filtered = Sound_filter_passHannBand (me, 80.0, 8000.0, 80.0);
autoIntensity thee = Sound_to_Intensity (filtered.get(), minPitch, timeStep, subtractMeanPressure);
autoTextGrid him = Intensity_to_TextGrid_detectSilences (thee.get(), silenceThreshold, minSilenceDuration, minSoundingDuration, silentLabel, soundingLabel);
return him;
} catch (MelderError) {
Melder_throw (me, U": no TextGrid with silences created.");
}
}
/* End of file Sound_and_TextGrid_extensions.cpp */
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