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/* Pitch_extensions.cpp
*
* Copyright (C) 1993-2019 David Weenink, 2017,2019 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/>.
*/
/*
djmw 1997
djmw 20030217 Latest modification
djmw 20061201 Interface change: removed minimumPitch parameter from PitchTier_modifyRange.
djmw 20061207 Removed PitchTier_modifyRange.
*/
#include "Pitch_extensions.h"
void Pitch_Frame_addPitch (Pitch_Frame me, double f, double strength, integer maxnCandidates) {
integer pos = 0;
double weakest = 1e308;
if (my nCandidates < maxnCandidates) {
my candidates. resize (++ my nCandidates);
pos = my nCandidates;
} else {
// Find weakest candidate so far (skip the unvoiced one)
for (integer i = 1; i <= maxnCandidates; i ++)
if (my candidates [i]. strength < weakest && my candidates [i]. frequency > 0.0)
weakest = my candidates [pos = i]. strength;
if (strength < weakest)
pos = 0;
}
if (pos > 0) {
my candidates [pos]. frequency = f;
my candidates [pos]. strength = strength;
}
}
void Pitch_Frame_getPitch (Pitch_Frame me, double *out_f, double *out_strength) {
integer pos = 1;
double strength = -1.0;
for (integer i = 1; i <= my nCandidates; i ++)
if (my candidates [i]. strength > strength && my candidates [i]. frequency > 0.0)
strength = my candidates [pos = i]. strength;
if (out_f)
*out_f = my candidates [pos]. frequency;
if (out_strength)
*out_strength = strength;
}
void Pitch_Frame_resizeStrengths (Pitch_Frame me, double maxStrength, double unvoicedCriterium) {
integer pos = 1;
double strongest = my candidates [1]. strength;
for (integer i = 2; i <= my nCandidates; i ++)
if (my candidates [i]. strength > strongest)
strongest = my candidates [pos = i]. strength;
if (strongest != 0)
for (integer i = 1; i <= my nCandidates; i ++)
my candidates [i]. strength *= maxStrength / strongest;
if (maxStrength < unvoicedCriterium)
for (integer i = 1; i <= my nCandidates; i ++)
if (my candidates [i]. frequency == 0) {
pos = i;
break;
}
if (pos != 1) {
std::swap (my candidates [1]. frequency, my candidates [pos]. frequency);
std::swap (my candidates [1]. strength, my candidates [pos]. strength);
}
}
autoPitch Pitch_scaleTime (Pitch me, double scaleFactor) {
try {
double dx = my dx, x1 = my x1, xmax = my xmax;
if (scaleFactor != 1.0) {
dx = my dx * scaleFactor;
x1 = my xmin + 0.5 * dx;
xmax = my xmin + my nx * dx;
}
autoPitch thee = Pitch_create (my xmin, xmax, my nx, dx, x1, my ceiling, 2);
for (integer i = 1; i <= my nx; i ++) {
double f = my frames [i]. candidates [1]. frequency;
thy frames [i]. candidates [1]. strength = my frames [i]. candidates [1]. strength;
f /= scaleFactor;
if (f < my ceiling)
thy frames [i]. candidates [1]. frequency = f;
}
return thee;
} catch (MelderError) {
Melder_throw (me, U": not scaled.");
}
}
static double HertzToSpecial (double value, kPitch_unit pitchUnit) {
return ( pitchUnit == kPitch_unit::HERTZ ? value :
( pitchUnit == kPitch_unit::HERTZ_LOGARITHMIC ? ( value <= 0.0 ? undefined : log10 (value)) :
( pitchUnit == kPitch_unit::MEL ? NUMhertzToMel (value) :
( pitchUnit == kPitch_unit::LOG_HERTZ ? ( value <= 0.0 ? undefined : log10 (value) ) :
( pitchUnit == kPitch_unit::SEMITONES_1 ? ( value <= 0.0 ? undefined : 12.0 * log (value / 1.0) / NUMln2 ) :
( pitchUnit == kPitch_unit::SEMITONES_100 ? ( value <= 0.0 ? undefined : 12.0 * log (value / 100.0) / NUMln2 ) :
( pitchUnit == kPitch_unit::SEMITONES_200 ? (value <= 0.0 ? undefined : 12.0 * log (value / 200.0) / NUMln2 ) :
( pitchUnit == kPitch_unit::SEMITONES_440 ? ( value <= 0.0 ? undefined : 12.0 * log (value / 440.0) / NUMln2 ) :
( pitchUnit == kPitch_unit::ERB ? NUMhertzToErb (value) : undefined ) ) ) ) ) ) ) ) );
}
static double SpecialToHertz (double value, kPitch_unit pitchUnit) {
return ( pitchUnit == kPitch_unit::HERTZ ? value :
( pitchUnit == kPitch_unit::HERTZ_LOGARITHMIC ? pow (10.0, value) :
( pitchUnit == kPitch_unit::MEL ? NUMmelToHertz (value) :
( pitchUnit == kPitch_unit::LOG_HERTZ ? pow (10.0, value) :
( pitchUnit == kPitch_unit::SEMITONES_1 ? 1.0 * exp (value * (NUMln2 / 12.0)) :
( pitchUnit == kPitch_unit::SEMITONES_100 ? 100.0 * exp (value * (NUMln2 / 12.0)) :
( pitchUnit == kPitch_unit::SEMITONES_200 ? 200.0 * exp (value * (NUMln2 / 12.0)) :
( pitchUnit == kPitch_unit::SEMITONES_440 ? 440.0 * exp (value * (NUMln2 / 12.0)) :
( pitchUnit == kPitch_unit::ERB ? NUMerbToHertz (value) : undefined ) ) ) ) ) ) ) ) );
}
autoPitchTier PitchTier_normalizePitchRange (PitchTier me, double pitchMin_ref_Hz, double pitchMax_ref_Hz, double pitchMin_Hz, double pitchMax_Hz, kPitch_unit pitchUnit);
autoPitchTier PitchTier_normalizePitchRange (PitchTier me, double pitchMin_ref_Hz, double pitchMax_ref_Hz, double pitchMin_Hz, double pitchMax_Hz, kPitch_unit pitchUnit) {
try {
const double fminr = HertzToSpecial (pitchMin_ref_Hz, pitchUnit);
const double fmaxr = HertzToSpecial (pitchMax_ref_Hz, pitchUnit);
const double fmin = HertzToSpecial (pitchMin_Hz, pitchUnit);
const double fmax = HertzToSpecial (pitchMax_Hz, pitchUnit);
Melder_require (! (isundef (fminr) || isundef (fmaxr) || isundef (fmin) || isundef (fmax)),
U"The conversion of a pitch value is not defined.");
const double ranger = fmaxr - fminr, range = fmax - fmin;
Melder_require (ranger >= 0.01 && range >= 0.01,
U"Pitch range too small.");
const double fmidr = fminr + ranger / 2.0;
const double factor = ranger / range;
autoPitchTier thee = Data_copy (me);
for (integer i = 1; i <= my points.size; i ++) {
const RealPoint point = thy points.at [i];
double f = HertzToSpecial (point -> value, pitchUnit);
f = factor * (f - fmidr);
f = SpecialToHertz (f, pitchUnit);
point -> value = f;
}
return thee;
} catch (MelderError) {
Melder_throw (me, U": no PitchTier created.");
}
}
autoPitch PitchTier_to_Pitch (PitchTier me, double dt, double pitchFloor, double pitchCeiling) {
try {
Melder_require (my points.size > 0,
U"The PitchTier is empty.");
Melder_require (dt > 0.0,
U"The time step should be a positive number.");
Melder_require (pitchFloor < pitchCeiling,
U"The pitch floor should be lower than the pitch ceiling.");
const double tmin = my xmin, tmax = my xmax, t1 = my xmin + dt / 2.0;
integer nt = Melder_ifloor ((tmax - tmin - t1) / dt);
if (t1 + nt * dt < tmax)
nt ++;
Melder_require (nt > 0,
U"Duration is too short.");
autoPitch thee = Pitch_create (tmin, tmax, nt, dt, t1, pitchCeiling, 1);
for (integer i = 1; i <= nt; i ++) {
const Pitch_Frame frame = & thy frames [i];
const Pitch_Candidate candidate = & frame -> candidates [1];
const double t = t1 + (i - 1) * dt;
double f = RealTier_getValueAtTime (me, t);
if (f < pitchFloor || f > pitchCeiling)
f = 0.0;
candidate -> frequency = f;
}
return thee;
} catch (MelderError) {
Melder_throw (me, U": no Pitch created.");
}
}
/* End of file Pitch_extensions.cpp */
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