marytts.tools.voiceimport.HalfPhoneUnitLabelComputer Maven / Gradle / Ivy
/**
* Copyright 2000-2009 DFKI GmbH.
* All Rights Reserved. Use is subject to license terms.
*
* This file is part of MARY TTS.
*
* MARY TTS is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see getDefaultProps(DatabaseLayout db) {
this.db = db;
if (props == null) {
props = new TreeMap();
props.put(ENERGYBASEDTRANSIENTSPLITTING, "false");
}
return props;
}
protected void setupHelp() {
props2Help = new TreeMap();
props2Help.put(ENERGYBASEDTRANSIENTSPLITTING,
"Whether to analyze energy in the speech signal to determine midpoints of transient phones (plosives).");
}
@Override
public boolean compute() throws Exception {
energyBasedTransientSplitting = Boolean.parseBoolean(db.getProperty(ENERGYBASEDTRANSIENTSPLITTING));
return super.compute();
}
@Override
protected List getMidTimes(List labels, List endTimes) {
assert labels.size() == endTimes.size();
List midTimes = new ArrayList(endTimes.size());
double startTime = 0;
for (int i = 0; i < labels.size(); i++) {
String label = labels.get(i);
double endTime = endTimes.get(i);
boolean isTransient = false;
double peakTime = Double.NaN;
if (energyBasedTransientSplitting) {
try {
Allophone allophone = db.getAllophoneSet().getAllophone(label);
isTransient = allophone.isPlosive() || allophone.isAffricate();
if (isTransient) {
peakTime = getEnergyPeak(startTime, endTime);
}
} catch (NullPointerException e) {
// ignore for now
} catch (IOException e) {
// ignore for now
}
}
double midTime;
if (isTransient && !Double.isNaN(peakTime)) {
midTime = peakTime;
} else {
midTime = (startTime + endTime) / 2;
}
midTimes.add(midTime);
startTime = endTime;
}
return midTimes;
}
/**
* Get time of energy peak difference between startTime and endTime, based on energy analysis of the wav file for the current
* baseName.
*
* The energy analysis (based on the provided parameters {@link #windowSizeInSeconds} and {@link #skipSizeInSeconds}) is saved
* to a binary file, which is reused if present (and if the parameter values match those encountered in the file header).
*
* @param startTime
* of energy analysis
* @param endTime
* of energy analysis
* @return the time of the greatest increase in energy between startTime and endTime, or {@link Double#NaN} if no such time
* can be determined from the signal (this is then handled in {@link #getMidTimes(List, List)})
* @throws IOException
* if the energy analysis file cannot be read or (initially) created
* @see EnergyContourRms#WriteEnergyFile(EnergyContourRms, String)
*/
private double getEnergyPeak(double startTime, double endTime) throws IOException {
// determine wav file name and energy analysis file name:
String wavDir = db.getProperty(DatabaseLayout.WAVDIR);
String baseName = bnl.getName(basenameIndex);
String wavExt = db.getProperty(DatabaseLayout.WAVEXT);
File wavFile = new File(wavDir, baseName + wavExt);
File energyFile = new File(unitlabelDir, baseName + energyExt);
// load or create energy analysis file:
EnergyContourRms energyContourRMS;
try {
energyContourRMS = EnergyContourRms.ReadEnergyFile(energyFile.getAbsolutePath());
if (energyContourRMS.header.windowSizeInSeconds != windowSizeInSeconds
|| energyContourRMS.header.skipSizeInSeconds != skipSizeInSeconds) {
logger.debug("File header of " + energyFile.getAbsolutePath()
+ " has unexpected parameter values! Will re-analyze...");
throw new IOException();
}
} catch (IOException e) {
logger.info("Analyzing " + wavFile.getAbsolutePath() + " and saving result to " + energyFile.getAbsolutePath());
energyContourRMS = new EnergyContourRms(wavFile.getAbsolutePath(), energyFile.getAbsolutePath(), windowSizeInSeconds,
skipSizeInSeconds);
}
// get energy analysis frames between startTime and endTime from energy contour:
double[] energyContour = energyContourRMS.contour;
int startFrame = SignalProcUtils.time2frameIndex(startTime, windowSizeInSeconds, skipSizeInSeconds);
int endFrame = SignalProcUtils.time2frameIndex(endTime, windowSizeInSeconds, skipSizeInSeconds);
double[] energyLocalContour = ArrayUtils.subarray(energyContour, startFrame, endFrame);
// get framewise differences:
double[] energyDiffs = MathUtils.diff(energyLocalContour);
// we need more than one diff frame:
if (energyDiffs.length < 2) {
return Double.NaN;
}
// find frame index of peak diff:
int peakLocalFrame = MathUtils.findGlobalPeakLocation(energyDiffs);
int peakGlobalFrame = startFrame + peakLocalFrame;
// convert frame index to time, adding half a window because diffs are between frames:
double peakTime = SignalProcUtils.frameIndex2Time(peakGlobalFrame, windowSizeInSeconds, skipSizeInSeconds)
+ windowSizeInSeconds / 2;
// adjust peak diff time to lie inside time range:
if (peakTime < startTime) {
peakTime = startTime;
} else if (peakTime > endTime) {
peakTime = endTime;
}
return peakTime;
}
@Override
@Deprecated
protected String[] toUnitLabels(String[] phoneLabels) {
// We will create exactly two half phones for every phone:
String[] halfPhoneLabels = new String[2 * phoneLabels.length];
float startTime = 0;
int unitIndex = 0;
for (int i = 0; i < phoneLabels.length; i++) {
unitIndex++;
StringTokenizer st = new StringTokenizer(phoneLabels[i]);
String endTimeString = st.nextToken();
String dummyNumber = st.nextToken();
String phone = st.nextToken();
assert !st.hasMoreTokens();
float endTime = Float.parseFloat(endTimeString);
float duration = endTime - startTime;
assert duration > 0 : "Duration is not > 0 for phone " + i + " (" + phone + ")";
float midTime = startTime + duration / 2;
String leftUnitLine = midTime + " " + unitIndex + " " + phone + "_L";
unitIndex++;
String rightUnitLine = endTime + " " + unitIndex + " " + phone + "_R";
halfPhoneLabels[2 * i] = leftUnitLine;
halfPhoneLabels[2 * i + 1] = rightUnitLine;
startTime = endTime;
}
return halfPhoneLabels;
}
}