public WAVSound Modify(WAVSound sound, double relativeStartPitch, double relativeEndPitch, Boolean adjustDuration, double relativeDuration)
{
// First, find the speech type variation:
// speechTypeEstimator = new SpeechTypeEstimator();
speechTypeEstimator.FindSpeechTypeVariation(sound);
/* speechTypeEstimator.FindSpeechTypeVariation(sound, 0, frameDuration, frameShift, speechTypeLowPassCutoffFrequency, speechTypeLowPassRatioThreshold,
* speechTypeEnergyThreshold, speechTypeSilenceThreshold);
* speechTypeEstimator.Adjust(3);
* speechTypeEstimator.Adjust(3); // repeat the adjustment to remove double errors. */
SpeechTypeSpecification speechTypeSpecification = speechTypeEstimator.SpeechTypeSpecification;
// Next, find the pitch periods:
PitchPeriodEstimator pitchPeriodEstimator = new PitchPeriodEstimator();
pitchPeriodEstimator.ComputePitchPeriods(sound, 0.0, sound.GetDuration()); //, minimumPitchPeriod, maximumPitchPeriod, frameShift); // 0.0120, 0.01, 0.03);
pitchPeriodEstimator.AdjustAndInterpolate(speechTypeSpecification); //, pitchPeriodDeltaTime, setUnvoicedPitch); // 0.005, true);
PitchPeriodSpecification pitchPeriodSpecification = pitchPeriodEstimator.PitchPeriodSpecification;
// Then, find the pitch marks:
pitchMarkEstimator = new PitchMarkEstimator();
pitchMarkEstimator.FindPitchMarks(sound, speechTypeSpecification, pitchPeriodSpecification); // , 0.0025, 0.0025, 0.45, 0.002);
List <double> pitchMarkTimeList = pitchMarkEstimator.PitchMarkTimeList;
// Then, change the pitch of the sound
double originalDuration = sound.GetDuration();
double desiredDuration = originalDuration * relativeDuration;
double actualRelativeDuration = relativeDuration; // Valid if the pitch is unchanged ...
WAVSound pitchChangedSound;
if ((Math.Abs(relativeStartPitch - 1) > double.Epsilon) || (Math.Abs(relativeEndPitch - 1) > double.Epsilon)) // To save some time, if only duration is to be changed..
{
pitchChangedSound = ChangePitch(sound, pitchMarkTimeList, relativeStartPitch, relativeEndPitch);
// The pitch change also changes the duration of the sound:
double newDuration = pitchChangedSound.GetDuration();
actualRelativeDuration = desiredDuration / newDuration; // ...but if the pitch is changed, the duration changes too.
}
else
{
pitchChangedSound = sound; // No copying needed here, a reference is sufficient.
modifiedPitchMarkTimeList = pitchMarkTimeList; // No pitch change => use original pitch marks.
}
// If the adjustDuration is true, change the duration, using the stored pitchmark time list (to avoid repeating the three steps above):
if (adjustDuration)
{
WAVSound durationChangedSound = ChangeDuration(pitchChangedSound, modifiedPitchMarkTimeList, actualRelativeDuration);
return(durationChangedSound);
}
else
{
return(pitchChangedSound);
}
}
public void SetSound(WAVSound sound)
{
this.sound = sound;
if (sound == null)
{
return;
} // 20160912
if (soundSequenceList == null)
{
soundSequenceList = new List <WAVSound>();
}
soundSequenceList.Add(this.sound.Copy());
this.xMin = 0;
this.xMax = (float)sound.GetDuration();
scrollbarVisible = false;
SetRange(xMin, xMax, MINIMUM_SAMPLE_VALUE, MAXIMUM_SAMPLE_VALUE);
OnViewingAreaChanged();
horizontalTickMarkList = new List <float>();
float tickMarkPosition = (float)xMin;
while (tickMarkPosition <= xMax)
{
horizontalTickMarkList.Add(tickMarkPosition);
tickMarkPosition += tickMarkSpacing;
}
OnAssignedSoundChanged();
Invalidate();
}
public void SetSound(WAVSound sound)
{
this.sound = sound;
if (sound == null)
{
Refresh();
return;
}
SetRange(0, sound.GetDuration(), -32768, 32768);
horizontalTickMarkList = new List <double>();
if (!pitchPanelVisible)
{
soundPanelFraction = 1;
}
nominalTopPanelHeight = (int)Math.Round(soundPanelFraction * this.Height);
soundPanelHeight = nominalTopPanelHeight - dividerHeight;
pitchPanelHeight = this.Height - soundPanelHeight - dividerHeight;
double tickMarkPosition = xMin;
while (tickMarkPosition <= xMax)
{
horizontalTickMarkList.Add(tickMarkPosition);
tickMarkPosition += tickMarkSpacing;
}
this.zoomLevel = 1;
scrollbarVisible = false;
PlotSoundAndPitch();
}
public void FindSpeechTypeVariation(WAVSound sound)
// , int channel, double frameDuration, double frameShift,
// double lowPassCutoffFrequency, double lowPassRatioThreshold, double energyThreshold, double silenceThreshold)
{
WAVFrameSet frameSet = new WAVFrameSet(sound, frameDuration, frameShift);
speechTypeSpecification = new SpeechTypeSpecification();
double time = 0;
for (int ii = 0; ii < frameSet.FrameList.Count; ii++)
{
WAVSound frame = frameSet.FrameList[ii];
SpeechType speechType = this.GetFrameSpeechType(frame); //
// SpeechType speechType = this.GetFrameSpeechType(frame, channel, lowPassCutoffFrequency, lowPassRatioThreshold, energyThreshold, silenceThreshold);
time = frameSet.StartTimeList[ii] + frameDuration / 2; // The speech type is assigned to the center of the frame
speechTypeSpecification.TimeSpeechTypeTupleList.Add(new Tuple <double, SpeechType>(time, speechType));
}
// Finally, to make sure that the speech type can be interpolated over the entire sound, set the
// end values:
SpeechType firstSpeechType = speechTypeSpecification.TimeSpeechTypeTupleList[0].Item2;
speechTypeSpecification.TimeSpeechTypeTupleList.Insert(0, new Tuple <double, SpeechType>(0, firstSpeechType));
SpeechType lastSpeechType = speechTypeSpecification.TimeSpeechTypeTupleList.Last().Item2;
double duration = sound.GetDuration();
if (speechTypeSpecification.TimeSpeechTypeTupleList.Last().Item1 < duration) // Will ALMOST always be the case, unless the duration is an exact multiple of the frame shift
{
speechTypeSpecification.TimeSpeechTypeTupleList.Add(new Tuple <double, SpeechType>(duration, lastSpeechType));
}
for (int jj = 0; jj < numberOfAdjustmentSteps; jj++)
{
Adjust();
}
}
public void SetSound(WAVSound sound, List <double> pitchList)
{
this.sound = sound;
this.pitchList = pitchList;
SetRange(0, sound.GetDuration(), 0, 1);
PlotSoundAndPitch();
}
private void speakButton_Click(object sender, EventArgs e)
{
string sentence = sentenceTextBox.Text;
if (sentence != "")
{
speechVisualizer.MarkerList = new List <SoundMarker>();
speechVisualizer.SetPitchPeriodSpecification(null);
string voiceName = voiceSelectionComboBox.SelectedItem.ToString();
speechSynthesizer.SetOutputToWaveFile("./tmpOutput.wav", new SpeechAudioFormatInfo(16000, AudioBitsPerSample.Sixteen, AudioChannel.Mono));
speechSynthesizer.Speak(sentence);
speechSynthesizer.SetOutputToDefaultAudioDevice();
speechSynthesizer.SelectVoice(voiceName);
speechSynthesizer.Speak(sentence);
currentSound = new WAVSound();
currentSound.LoadFromFile("./tmpOutput.wav");
double startTime = currentSound.GetFirstTimeAboveThreshold(0, 10, 20);
double endTime = currentSound.GetLastTimeAboveThreshold(0, 10, 20);
currentSound = currentSound.Extract(startTime, endTime);
speechVisualizer.SetRange(0, currentSound.GetDuration(), -32768, 32768);
speechVisualizer.SetSound(currentSound);
speechVisualizer.Invalidate();
soundTypeIdentificationButton.Enabled = true;
playSoundButton.Enabled = true;
modifySoundButton.Enabled = true;
saveSoundToolStripMenuItem.Enabled = true;
}
}
private void modifySoundButton_Click(object sender, EventArgs e)
{
speechVisualizer.MarkerList = new List <SoundMarker>();
speechModifier.TopFraction = double.Parse(topFractionTextBox.Text);
double relativeStartPitch = double.Parse(relativeStartPitchTextBox.Text);
double relativeEndPitch = double.Parse(relativeEndPitchTextBox.Text);
Boolean adjustDuration = Boolean.Parse(adjustDurationComboBox.SelectedItem.ToString());
double relativeDuration = double.Parse(relativeDurationTextBox.Text); // Only relevant if adjustDuration = true.
WAVSound modifiedSound = speechModifier.Modify(currentSound, relativeStartPitch, relativeEndPitch, adjustDuration, relativeDuration);
// modifiedSound.MedianFilter(5);
// modifiedSound.LowPassFilter(1500);
// modifiedSound.SetMaximumNonClippingVolume();
// modifiedSound.SetMaximumNonClippingVolume();
SoundPlayer soundPlayer = new SoundPlayer();
modifiedSound.GenerateMemoryStream();
modifiedSound.WAVMemoryStream.Position = 0; // Manually rewind stream
soundPlayer.Stream = null;
soundPlayer.Stream = modifiedSound.WAVMemoryStream;
soundPlayer.PlaySync();
speechVisualizer.SetRange(0, modifiedSound.GetDuration(), -32768, 32768);
speechVisualizer.SetPitchPeriodSpecification(null);
speechVisualizer.SetSound(modifiedSound);
currentSound = modifiedSound.Copy();
soundTypeIdentificationButton.Enabled = true;
findPitchPeriodsButton.Enabled = false;
findPitchMarksButton.Enabled = false;
}
private void findPitchPeriodsButton_Click(object sender, EventArgs e)
{
findPitchPeriodsButton.Enabled = false;
PitchPeriodEstimator pitchPeriodEstimator = speechModifier.PitchPeriodEstimator;
pitchPeriodEstimator.ComputePitchPeriods(currentSound, 0.0, currentSound.GetDuration()); //, 0.0050, 0.0120, 0.01);
pitchPeriodEstimator.AdjustAndInterpolate(speechTypeSpecification); // , 0.005, true);
speechVisualizer.SetPitchPeriodSpecification(pitchPeriodEstimator.PitchPeriodSpecification);
pitchPeriodSpecification = pitchPeriodEstimator.PitchPeriodSpecification;
findPitchMarksButton.Enabled = true;
}
public WAVFrameSet(WAVSound sound, double frameDuration, double frameShift)
{
double soundDuration = sound.GetDuration();
this.frameDuration = frameDuration;
this.frameShift = frameShift;
this.frameList = new List <WAVSound>();
int numberOfFrames = (int)Math.Truncate((soundDuration - frameDuration + frameShift) / frameShift);
this.startTimeList = new List <double>();
for (int ii = 0; ii < numberOfFrames; ii++)
{
double startTime = ii * frameShift;
double endTime = startTime + frameDuration;
WAVSound frame = sound.Extract(startTime, endTime);
frameList.Add(frame);
startTimeList.Add(startTime);
}
}
// First identifies the first index at which the data point is below the
// threshold. Then finds the subsequent minimum.
/* public int FindFirstMinimum(List<double> dataList, double threshold)
* {
* int startIndex = dataList.FindIndex(d => d < threshold);
* if (startIndex < 0) { return -1; }
* else
* {
* double currentValue = dataList[startIndex];
* double minimum = dataList[startIndex];
* int minimumIndex = startIndex;
* int ii = minimumIndex + 1;
* while ((currentValue < threshold) && (ii < dataList.Count))
* {
* currentValue = dataList[ii];
* if (currentValue < minimum)
* {
* minimum = currentValue;
* minimumIndex = ii;
* }
* ii++;
* }
* return minimumIndex;
* }
* } */
public void ComputePitchPeriods(WAVSound sound, double startTime, double endTime)
// , double minimumPitchPeriod, double maximumPitchPeriod,
// double frameShift)
{
pitchPeriodSpecification = new PitchPeriodSpecification();
double time = startTime;
double actualEndTime = endTime;
double duration = sound.GetDuration();
// At least to maximim pitch periods are required for the analysis
if (actualEndTime > (duration - 2 * maximumPitchPeriod))
{
actualEndTime = duration - 2 * maximumPitchPeriod;
}
while (time <= actualEndTime)
{
double pitchPeriod = ComputeFramePitchPeriod(sound, time); // , minimumPitchPeriod, maximumPitchPeriod); //, threshold);
Tuple <double, double> timePitchPeriodTuple = new Tuple <double, double>(time, pitchPeriod);
pitchPeriodSpecification.TimePitchPeriodTupleList.Add(timePitchPeriodTuple);
time += frameShift;
}
}
private void ShowSound(WAVSound sound)
{
ClearHistory();
try // This (using try-catch) is ugly, but appears to be necessary for some hardware configurations
{
double duration = sound.GetDuration();
if (duration > viewingInterval)
{
WAVSound visibleSound = sound.Extract(duration - viewingInterval, duration);
SetSound(visibleSound);
}
else
{
SetSound(sound);
}
}
catch
{
// Nothing to do here..
}
displayBusy = false;
}
private void RunLoop()
{
Thread.Sleep(1);
DateTime utteranceStartDateTime = DateTime.Now; // Just needed for initialization.
DateTime utteranceEndDateTime = DateTime.MinValue; // Just needed for initialization.
DateTime previousUtteranceStartDateTime = DateTime.MinValue;
DateTime previousUtteranceEndDateTime = DateTime.MinValue;
DateTime recordingStartDateTime;
DateTime recordingEndDateTime;
double utteranceStartTime = 0; // In seconds, measured from the start of the current recording. (=0 just for initialization).
double utteranceEndTime;
while (running)
{
Thread.Sleep(millisecondRecordingInterval);
byte[] soundData = wavRecorder.GetAllRecordedBytes(out recordingStartDateTime, out recordingEndDateTime);
if (soundData != null)
{
if (soundData.Length > 0)
{
WAVSound sound = new WAVSound("", wavRecorder.SampleRate, wavRecorder.NumberOfChannels, wavRecorder.NumberOfBitsPerSample);
sound.AppendSamplesAsBytes(soundData);
if (showSoundStream)
{
if (!displayBusy)
{
WAVSound soundToDisplay = sound.Copy(); // 20171207: Make a new copy here, since the code below may process the sound before visualization is completed.
if (InvokeRequired)
{
this.BeginInvoke(new MethodInvoker(() => ShowSound(soundToDisplay)));
}
else
{
ShowSound(soundToDisplay);
}
}
}
// Next, remove all parts of the sound that have already been recognized, if any:
if (previousUtteranceEndDateTime > recordingStartDateTime)
{
double extractionStartTime = (previousUtteranceEndDateTime - recordingStartDateTime).TotalSeconds;
double extractionEndTime = sound.GetDuration();
sound = sound.Extract(extractionStartTime, extractionEndTime);
// Debug code, remove
/* if (sound == null) // Should not happen, unless the recognition thread is stopped using a breakpoint.
* {
*
* } */
}
if (!inUtterance)
{
utteranceStartTime = sound.GetFirstTimeAboveThreshold(0, movingAverageLength, detectionThreshold);
if (utteranceStartTime > 0)
{
double duration = sound.GetDuration();
double timeToEnd = duration - utteranceStartTime;
long ticksToEnd = TICKS_PER_SECOND * (long)(timeToEnd);
utteranceStartDateTime = recordingEndDateTime.Subtract(new TimeSpan(ticksToEnd));
if (utteranceStartDateTime > previousUtteranceEndDateTime) // True (by construction) the FIRST time.
{
inUtterance = true;
long utteranceStartTimeAsTicks = (long)(TICKS_PER_SECOND * utteranceStartTime); // Corrected 20170907 (1000000 -> 10000000)
utteranceStartDateTime = recordingStartDateTime.Add(new TimeSpan(utteranceStartTimeAsTicks));
}
}
}
else
{
double duration = sound.GetDuration();
WAVSound endOfSound = sound.Extract(duration - detectionSilenceInterval, duration);
double startTimeInEndOfSound = endOfSound.GetFirstTimeAboveThreshold(0, movingAverageLength, detectionThreshold);
if (startTimeInEndOfSound < 0) // <=> silence at the end of the sound
{
inUtterance = false;
utteranceEndDateTime = recordingEndDateTime; // recordingStartDateTime.Add(new TimeSpan(utteranceEndTimeAsTicks));
previousUtteranceStartDateTime = utteranceStartDateTime;
previousUtteranceEndDateTime = utteranceEndDateTime;
// Monitor.Enter(recognitionLockObject);
if (!recognizerBusy)
{
recognizerBusy = true;
WAVSound soundToRecognize = sound.Extract(utteranceStartTime - extractionMargin, duration).Copy();
// Monitor.Exit(recognitionLockObject);
RunRecognizer(soundToRecognize);
}
}
}
}
}
}
}
// Note: it is assumed that both channels (left and right) are equal.
public WAVSound ChangePitch(WAVSound sound, List <double> pitchMarkTimeList, double relativeStartPitch, double relativeEndPitch)
{
// First find the pitch mark indices in the original sound:
List <int> originalPitchMarkIndexList = new List <int>();
foreach (double pitchMarkTime in pitchMarkTimeList)
{
int originalPitchMarkIndex = sound.GetSampleIndexAtTime(pitchMarkTime);
originalPitchMarkIndexList.Add(originalPitchMarkIndex);
}
// Next, compute the index spacings of the pitch marks in the modified sound:
double originalSoundDuration = sound.GetDuration();
List <int> modifiedPitchMarkIndexSpacingList = new List <int>();
modifiedPitchMarkTimeList = new List <double>();
double firstModifiedPitchMarkTime = pitchMarkTimeList[0]; // First pitch mark unchanged
modifiedPitchMarkTimeList.Add(firstModifiedPitchMarkTime);
for (int ii = 1; ii < originalPitchMarkIndexList.Count; ii++)
{
int originalPitchMarkSpacing = originalPitchMarkIndexList[ii] - originalPitchMarkIndexList[ii - 1];
double relativePitch = relativeStartPitch + (pitchMarkTimeList[ii] / originalSoundDuration) * (relativeEndPitch - relativeStartPitch);
int modifiedPitchMarkIndexSpacing = (int)Math.Round(originalPitchMarkSpacing / relativePitch);
modifiedPitchMarkIndexSpacingList.Add(modifiedPitchMarkIndexSpacing);
double modifiedPitchMarkTime = modifiedPitchMarkTimeList.Last() + (double)modifiedPitchMarkIndexSpacing / (double)sound.SampleRate;
modifiedPitchMarkTimeList.Add(modifiedPitchMarkTime);
}
// Now build the sound, keeping the original sound data over a fraction (topFraction) of the pitch periods
// and interpolating between pitch periods:
List <short> newSamples = new List <short>();
// Special treatment of the first pitch period:
int firstPitchMarkIndex = originalPitchMarkIndexList[0]; // Position of the first pitch mark in the original sound
int firstModifiedPitchMarkIndexSpacing = modifiedPitchMarkIndexSpacingList[0]; // Spacing between the first and second pitch mark in the modified sound
int firstTopEndIndex = firstPitchMarkIndex + (int)Math.Round(topFraction * firstModifiedPitchMarkIndexSpacing);
for (int ii = 0; ii < firstTopEndIndex; ii++)
{
newSamples.Add(sound.Samples[0][ii]);
}
for (int iPitchMark = 1; iPitchMark < originalPitchMarkIndexList.Count; iPitchMark++)
{
// First add samples for the transition from the previous pitch period to the current one:
int modifiedPitchMarkIndexSpacing = modifiedPitchMarkIndexSpacingList[iPitchMark - 1]; // -1 since there are n-1 spacings for n pitch marks
int transitionIndexDuration = (int)Math.Round((1 - 2 * topFraction) * modifiedPitchMarkIndexSpacing);
int previousPitchMarkIndex = originalPitchMarkIndexList[iPitchMark - 1];
int previousTopEndIndex = previousPitchMarkIndex + (int)Math.Round(topFraction * modifiedPitchMarkIndexSpacing);
int startIndexPreviousPitchPeriod = previousTopEndIndex;
int currentPitchMarkIndex = originalPitchMarkIndexList[iPitchMark];
int currentTopStartIndex = currentPitchMarkIndex - (int)Math.Round(topFraction * modifiedPitchMarkIndexSpacing);
for (int ii = 0; ii < transitionIndexDuration; ii++)
{
double alpha = (double)ii / (double)(transitionIndexDuration - 1);
int previousPitchPeriodSampleIndex = previousTopEndIndex + ii;
int currentPitchPeriodSampleIndex = currentTopStartIndex - transitionIndexDuration + ii;
short newSample = (short)Math.Round(((1 - alpha) * sound.Samples[0][previousPitchPeriodSampleIndex] +
alpha * sound.Samples[0][currentPitchPeriodSampleIndex]));
newSamples.Add(newSample);
}
// Next, add samples around the top of the current pitch period:
if (iPitchMark < (originalPitchMarkIndexList.Count - 1))
{
int nextModifiedPitchMarkIndexSpacing = modifiedPitchMarkIndexSpacingList[iPitchMark];
int currentTopEndIndex = currentPitchMarkIndex + (int)Math.Round(topFraction * nextModifiedPitchMarkIndexSpacing);
for (int ii = currentTopStartIndex; ii < currentTopEndIndex; ii++)
{
newSamples.Add(sound.Samples[0][ii]);
}
}
else // Special treatment of the final pitch period:
{
int endIndex = sound.Samples[0].Count;
for (int ii = currentTopStartIndex; ii < endIndex; ii++)
{
newSamples.Add(sound.Samples[0][ii]);
}
}
}
// Finally, build the sound from the new samples:
WAVSound newSound = new WAVSound(sound.Name, sound.SampleRate, sound.NumberOfChannels, sound.BitsPerSample);
newSound.GenerateFromSamples(new List <List <short> >()
{
newSamples, newSamples
});
return(newSound);
}