// 64 channel sample with padCount zeros padded right
public List <double> GetPaddedChannelSample(int sampleCount, int padCount)
{
int numSamplesToGet = (sampleCount - padCount);
int curIDX = _sampleIDX;
if (curIDX + numSamplesToGet >= _samples.Count)
{
numSamplesToGet = _samples.Count - curIDX;
if (numSamplesToGet <= 0)
{
// Roll over to the beginning
_sampleIDX = 0;
return(GetPaddedChannelSample(sampleCount, padCount));
}
}
_sampleIDX += numSamplesToGet;
_sliceSignal = _samples.GetRange(curIDX, numSamplesToGet);
List <double> paddedSignal = new List <double>(sampleCount);
paddedSignal.AddRange(_sliceSignal);
// Pad
int padLen = (sampleCount - numSamplesToGet);
for (int cnt = 0; cnt < padLen; cnt++)
{
paddedSignal.Add(0.0);
}
IDFT ff_transform = new ComplexFastFourierTransform();
IDFT cdf_tranform = new CorrelationFourierTransform();
//_frequencyDomain = DFT.CorrelationTransform(paddedSignal);
_frequencyDomain = ff_transform.Transform(paddedSignal);
return(_sliceSignal);
}
public List <double> GetNextSamplesForTimeSlice(double milliseconds)
{
int numSamplesToGet = (int)Math.Floor((milliseconds / 1000) * _sampleRate);
int curIDX = _sampleIDX;
if (curIDX + numSamplesToGet >= _samples.Count)
{
numSamplesToGet = _samples.Count - curIDX - 1;
if (numSamplesToGet <= 0)
{
// Roll over to the beginning
_sampleIDX = 0;
return(GetNextSamplesForTimeSlice(milliseconds));
}
}
_sampleIDX += numSamplesToGet;
_sliceSignal = _samples.GetRange(curIDX, numSamplesToGet);
//_frequencyDomain = DFT.CorrelationTransform(_sliceSignal);
//IDFT transform = new FastFourierTransform();
IDFT transform = new CorrelationFourierTransform();
_frequencyDomain = transform.Transform(_sliceSignal);
return(_sliceSignal);
}
