protected internal override Data computeNextFeature()
{
DoubleData doubleData = this.cepstraBuffer[this.currentPosition];
float[] array = new float[(this.window * 2 + 1) * doubleData.getValues().Length];
int num = 0;
for (int i = -this.window; i <= this.window; i++)
{
int num2 = this.currentPosition + i + this.cepstraBufferSize;
int cepstraBufferSize = this.cepstraBufferSize;
int num3 = (cepstraBufferSize != -1) ? (num2 % cepstraBufferSize) : 0;
double[] values = this.cepstraBuffer[num3].getValues();
double[] array2 = values;
int num4 = array2.Length;
for (int j = 0; j < num4; j++)
{
double num5 = array2[j];
float[] array3 = array;
int num6 = num;
num++;
array3[num6] = (float)num5;
}
}
int num7 = this.currentPosition + 1;
int cepstraBufferSize2 = this.cepstraBufferSize;
this.currentPosition = ((cepstraBufferSize2 != -1) ? (num7 % cepstraBufferSize2) : 0);
return(new FloatData(array, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private DoubleData process(DoubleData doubleData)
{
double[] values = doubleData.getValues();
if (this.criticalBandFilter == null || this.sampleRate != doubleData.getSampleRate())
{
this.numberFftPoints = values.Length - 1 << 1;
this.sampleRate = doubleData.getSampleRate();
this.buildCriticalBandFilterbank();
this.buildEqualLoudnessScalingFactors();
}
else if (values.Length != (this.numberFftPoints >> 1) + 1)
{
string text = new StringBuilder().append("Window size is incorrect: in.length == ").append(values.Length).append(", numberFftPoints == ").append((this.numberFftPoints >> 1) + 1).toString();
throw new IllegalArgumentException(text);
}
double[] array = new double[this.numberFilters];
for (int i = 0; i < this.numberFilters; i++)
{
array[i] = this.criticalBandFilter[i].filterOutput(values);
double[] array2 = array;
int num = i;
double[] array3 = array2;
array3[num] *= this.equalLoudnessScaling[i];
}
return(new DoubleData(array, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private bool isAudioStreamContinuous(Data data)
{
if (data is DoubleData)
{
DoubleData doubleData = (DoubleData)data;
if (this.lastSampleNum != -1L && this.lastSampleNum != doubleData.getFirstSampleNumber())
{
return(false);
}
this.lastSampleNum = doubleData.getFirstSampleNumber() + (long)doubleData.getValues().Length;
}
else if (data is DataStartSignal)
{
this.lastSampleNum = -1L;
}
return(true);
}
public override Data getData()
{
Data data;
if (this.outputQueue.isEmpty())
{
data = this.getPredecessor().getData();
if (data != null)
{
if (data is DoubleData)
{
DoubleData doubleData = (DoubleData)data;
if (this.currentFirstSampleNumber == -1L)
{
this.currentFirstSampleNumber = doubleData.getFirstSampleNumber();
}
this.createWindow(doubleData.getSampleRate());
this.process(doubleData);
}
else
{
if (data is DataStartSignal)
{
DataStartSignal dataStartSignal = (DataStartSignal)data;
this.createWindow(dataStartSignal.getSampleRate());
Map props = dataStartSignal.getProps();
props.put("windowSize", Integer.valueOf(this.windowShift));
props.put("windowShift", Integer.valueOf(this.cosineWindow.Length));
this.currentFirstSampleNumber = -1L;
}
else if (data is SpeechStartSignal)
{
this.currentFirstSampleNumber = -1L;
}
else if (data is DataEndSignal || data is SpeechEndSignal)
{
this.processUtteranceEnd();
}
this.outputQueue.add(data);
}
}
}
if (this.outputQueue.isEmpty())
{
return(null);
}
data = (Data)this.outputQueue.remove(0);
if (data is DoubleData && !RaisedCosineWindower.assertionsDisabled && ((DoubleData)data).getValues().Length != this.cosineWindow.Length)
{
throw new AssertionError();
}
return(data);
}
public static FloatData DoubleData2FloatData(DoubleData data)
{
int num = data.getValues().Length;
float[] array = new float[num];
double[] values = data.getValues();
for (int i = 0; i < values.Length; i++)
{
array[i] = (float)values[i];
}
return(new FloatData(array, data.getSampleRate(), data.getFirstSampleNumber()));
}
private Data process(DoubleData doubleData)
{
double[] values = doubleData.getValues();
if (values.Length != this.numberPLPFilters)
{
string text = new StringBuilder().append("PLPSpectrum size is incorrect: plpspectrum.length == ").append(values.Length).append(", numberPLPFilters == ").append(this.numberPLPFilters).toString();
throw new IllegalArgumentException(text);
}
double[] array = this.powerLawCompress(values);
double[] autocor = this.applyCosine(array);
LinearPredictor linearPredictor = new LinearPredictor(this.LPCOrder);
linearPredictor.getARFilter(autocor);
double[] data = linearPredictor.getData(this.cepstrumSize);
return(new DoubleData(data, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private DoubleData process(Data data)
{
if (!Dither.assertionsDisabled && !(data is DoubleData))
{
throw new AssertionError();
}
DoubleData doubleData = (DoubleData)data;
double[] values = doubleData.getValues();
double[] array = new double[values.Length];
for (int i = 0; i < values.Length; i++)
{
array[i] = (double)(this.r.nextFloat() * 2f) * this.ditherMax - this.ditherMax + values[i];
array[i] = Math.max(Math.min(array[i], this.maxValue), this.minValue);
}
return(new DoubleData(array, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private DoubleData process(DoubleData doubleData)
{
double[] values = doubleData.getValues();
if (this.numberFftPoints < values.Length)
{
int i;
for (i = 0; i < this.numberFftPoints; i++)
{
this.inputFrame[i].set(values[i], (double)0f);
}
while (i < values.Length)
{
this.tempComplex.set(values[i], (double)0f);
Complex[] array = this.inputFrame;
int num = i;
int num2 = this.numberFftPoints;
Complex complex = array[(num2 != -1) ? (num % num2) : 0];
Complex[] array2 = this.inputFrame;
int num3 = i;
int num4 = this.numberFftPoints;
complex.addComplex(array2[(num4 != -1) ? (num3 % num4) : 0], this.tempComplex);
i++;
}
}
else
{
int i;
for (i = 0; i < values.Length; i++)
{
this.inputFrame[i].set(values[i], (double)0f);
}
while (i < this.numberFftPoints)
{
this.inputFrame[i].reset();
i++;
}
}
double[] array3 = new double[(this.numberFftPoints >> 1) + 1];
this.recurseFft(this.inputFrame, array3, this.numberFftPoints, this.invert);
return(new DoubleData(array3, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private DoubleData process(DoubleData doubleData)
{
double[] values = doubleData.getValues();
if (this.melcosine == null)
{
this.numberMelFilters = values.Length;
this.computeMelCosine();
}
else if (values.Length != this.numberMelFilters)
{
string text = new StringBuilder().append("MelSpectrum size is incorrect: melspectrum.length == ").append(values.Length).append(", numberMelFilters == ").append(this.numberMelFilters).toString();
throw new IllegalArgumentException(text);
}
for (int i = 0; i < values.Length; i++)
{
values[i] = Math.log(values[i] + 0.0001);
}
double[] values2 = this.applyMelCosine(values);
return(new DoubleData(values2, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
private DoubleData process(DoubleData doubleData)
{
double[] values = doubleData.getValues();
if (this.filter == null || this.sampleRate != doubleData.getSampleRate())
{
this.numberFftPoints = values.Length - 1 << 1;
this.sampleRate = doubleData.getSampleRate();
this.buildFilterbank(this.numberFftPoints, this.numberFilters, this.minFreq, this.maxFreq);
}
else if (values.Length != (this.numberFftPoints >> 1) + 1)
{
string text = new StringBuilder().append("Window size is incorrect: in.length == ").append(values.Length).append(", numberFftPoints == ").append((this.numberFftPoints >> 1) + 1).toString();
throw new IllegalArgumentException(text);
}
double[] array = new double[this.numberFilters];
for (int i = 0; i < this.numberFilters; i++)
{
array[i] = this.filter[i].filterOutput(values);
}
return(new DoubleData(array, this.sampleRate, doubleData.getFirstSampleNumber()));
}
protected internal override Data computeNextFeature()
{
int num = this.currentPosition - 1 + this.cepstraBufferSize;
int cepstraBufferSize = this.cepstraBufferSize;
int num2 = (cepstraBufferSize != -1) ? (num % cepstraBufferSize) : 0;
int num3 = this.currentPosition - 2 + this.cepstraBufferSize;
int cepstraBufferSize2 = this.cepstraBufferSize;
int num4 = (cepstraBufferSize2 != -1) ? (num3 % cepstraBufferSize2) : 0;
int num5 = this.currentPosition - 3 + this.cepstraBufferSize;
int cepstraBufferSize3 = this.cepstraBufferSize;
int num6 = (cepstraBufferSize3 != -1) ? (num5 % cepstraBufferSize3) : 0;
int num7 = this.currentPosition - 4 + this.cepstraBufferSize;
int cepstraBufferSize4 = this.cepstraBufferSize;
int num8 = (cepstraBufferSize4 != -1) ? (num7 % cepstraBufferSize4) : 0;
int num9 = this.currentPosition + 1;
int cepstraBufferSize5 = this.cepstraBufferSize;
int num10 = (cepstraBufferSize5 != -1) ? (num9 % cepstraBufferSize5) : 0;
int num11 = this.currentPosition + 2;
int cepstraBufferSize6 = this.cepstraBufferSize;
int num12 = (cepstraBufferSize6 != -1) ? (num11 % cepstraBufferSize6) : 0;
int num13 = this.currentPosition + 3;
int cepstraBufferSize7 = this.cepstraBufferSize;
int num14 = (cepstraBufferSize7 != -1) ? (num13 % cepstraBufferSize7) : 0;
int num15 = this.currentPosition + 4;
int cepstraBufferSize8 = this.cepstraBufferSize;
int num16 = (cepstraBufferSize8 != -1) ? (num15 % cepstraBufferSize8) : 0;
DoubleData doubleData = this.cepstraBuffer[this.currentPosition];
double[] values = this.cepstraBuffer[num16].getValues();
double[] values2 = this.cepstraBuffer[num14].getValues();
double[] values3 = this.cepstraBuffer[num12].getValues();
double[] values4 = this.cepstraBuffer[num10].getValues();
double[] values5 = doubleData.getValues();
double[] values6 = this.cepstraBuffer[num2].getValues();
double[] values7 = this.cepstraBuffer[num4].getValues();
double[] values8 = this.cepstraBuffer[num6].getValues();
double[] values9 = this.cepstraBuffer[num8].getValues();
float[] array = new float[values5.Length * 3];
int num17 = this.currentPosition + 1;
int cepstraBufferSize9 = this.cepstraBufferSize;
this.currentPosition = ((cepstraBufferSize9 != -1) ? (num17 % cepstraBufferSize9) : 0);
int num18 = 0;
double[] array2 = values5;
int num19 = array2.Length;
for (int i = 0; i < num19; i++)
{
double num20 = array2[i];
float[] array3 = array;
int num21 = num18;
num18++;
array3[num21] = (float)num20;
}
for (int j = 0; j < values3.Length; j++)
{
float[] array4 = array;
int num22 = num18;
num18++;
array4[num22] = (float)(2.0 * values3[j] + values4[j] - values6[j] - 2.0 * values7[j]) / 10f;
}
for (int j = 0; j < values2.Length; j++)
{
float[] array5 = array;
int num23 = num18;
num18++;
array5[num23] = (float)(4.0 * values[j] + 4.0 * values2[j] + values3[j] - 4.0 * values4[j] - 10.0 * values5[j] + (4.0 * values9[j] + 4.0 * values8[j] + values7[j] - 4.0 * values6[j])) / 100f;
}
return(new FloatData(array, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
public override Data getData()
{
object obj = this.readData();
if ((Data)obj != null)
{
if (!(((Data)obj) is Signal))
{
int num = this.id;
int num2 = this.dropEveryNthFrame;
if (((num2 != -1) ? (num % num2) : 0) == this.dropEveryNthFrame - 1)
{
if (this.replaceNthWithPrevious)
{
if (((Data)obj) is FloatData)
{
FloatData floatData = (FloatData)this.lastFeature;
obj = new FloatData(floatData.getValues(), floatData.getSampleRate(), floatData.getFirstSampleNumber());
}
else
{
DoubleData doubleData = (DoubleData)this.lastFeature;
obj = new DoubleData(doubleData.getValues(), doubleData.getSampleRate(), doubleData.getFirstSampleNumber());
}
}
else
{
obj = this.readData();
}
}
}
if (obj != null)
{
if (obj is DataEndSignal)
{
this.id = -1;
}
if (obj is FloatData)
{
object obj2 = obj;
Data data;
if (obj2 != null)
{
if ((data = (obj2 as Data)) == null)
{
throw new IncompatibleClassChangeError();
}
}
else
{
data = null;
}
this.lastFeature = data;
}
else
{
this.lastFeature = null;
}
}
else
{
this.lastFeature = null;
}
}
object obj3 = obj;
Data result;
if (obj3 != null)
{
if ((result = (obj3 as Data)) == null)
{
throw new IncompatibleClassChangeError();
}
}
else
{
result = null;
}
return(result);
}
protected internal override Data computeNextFeature()
{
int num = this.currentPosition - 1 + this.cepstraBufferSize;
int cepstraBufferSize = this.cepstraBufferSize;
int num2 = (cepstraBufferSize != -1) ? (num % cepstraBufferSize) : 0;
int num3 = this.currentPosition - 2 + this.cepstraBufferSize;
int cepstraBufferSize2 = this.cepstraBufferSize;
int num4 = (cepstraBufferSize2 != -1) ? (num3 % cepstraBufferSize2) : 0;
int num5 = this.currentPosition - 3 + this.cepstraBufferSize;
int cepstraBufferSize3 = this.cepstraBufferSize;
int num6 = (cepstraBufferSize3 != -1) ? (num5 % cepstraBufferSize3) : 0;
int num7 = this.currentPosition + 1;
int cepstraBufferSize4 = this.cepstraBufferSize;
int num8 = (cepstraBufferSize4 != -1) ? (num7 % cepstraBufferSize4) : 0;
int num9 = this.currentPosition + 2;
int cepstraBufferSize5 = this.cepstraBufferSize;
int num10 = (cepstraBufferSize5 != -1) ? (num9 % cepstraBufferSize5) : 0;
int num11 = this.currentPosition + 3;
int cepstraBufferSize6 = this.cepstraBufferSize;
int num12 = (cepstraBufferSize6 != -1) ? (num11 % cepstraBufferSize6) : 0;
DoubleData doubleData = this.cepstraBuffer[this.currentPosition];
double[] values = this.cepstraBuffer[num12].getValues();
double[] values2 = this.cepstraBuffer[num10].getValues();
double[] values3 = this.cepstraBuffer[num8].getValues();
double[] values4 = doubleData.getValues();
double[] values5 = this.cepstraBuffer[num2].getValues();
double[] values6 = this.cepstraBuffer[num4].getValues();
double[] values7 = this.cepstraBuffer[num6].getValues();
float[] array = new float[values4.Length * 3];
int num13 = this.currentPosition + 1;
int cepstraBufferSize7 = this.cepstraBufferSize;
this.currentPosition = ((cepstraBufferSize7 != -1) ? (num13 % cepstraBufferSize7) : 0);
int num14 = 0;
double[] array2 = values4;
int num15 = array2.Length;
for (int i = 0; i < num15; i++)
{
double num16 = array2[i];
float[] array3 = array;
int num17 = num14;
num14++;
array3[num17] = (float)num16;
}
for (int j = 0; j < values2.Length; j++)
{
float[] array4 = array;
int num18 = num14;
num14++;
array4[num18] = (float)(values2[j] - values6[j]);
}
for (int j = 0; j < values.Length; j++)
{
float[] array5 = array;
int num19 = num14;
num14++;
array5[num19] = (float)(values[j] - values5[j] - (values3[j] - values7[j]));
}
return(new FloatData(array, doubleData.getSampleRate(), doubleData.getFirstSampleNumber()));
}
public override Data getData()
{
object obj = this.getPredecessor().getData();
if (((Data)obj) is DoubleData && String.instancehelper_equals(this.convMode, "d2f"))
{
DoubleData doubleData = (DoubleData)((Data)obj);
obj = new FloatData(MatrixUtils.double2float(doubleData.getValues()), doubleData.getSampleRate(), doubleData.getFirstSampleNumber());
}
else if (((Data)obj) is FloatData && String.instancehelper_equals(this.convMode, "f2d"))
{
FloatData floatData = (FloatData)((Data)obj);
obj = new DoubleData(MatrixUtils.float2double(floatData.getValues()), floatData.getSampleRate(), floatData.getFirstSampleNumber());
}
object obj2 = obj;
Data result;
if (obj2 != null)
{
if ((result = (obj2 as Data)) == null)
{
throw new IncompatibleClassChangeError();
}
}
else
{
result = null;
}
return(result);
}