/// <summary>
/// Calculates the fft bins.
/// This code is taken from the config ui training code to calculate fft bins
/// </summary>
/// <param name="fftSize">Size of the FFT.</param>
/// <param name="timeRate">The time rate.</param>
/// <returns>a list of fft bin boundaries</returns>
public List <double> CalculateFFTBins(FftSizes fftSize, TdSampleRates timeRate)
{
int numBins = 0;
switch (fftSize)
{
case FftSizes.Size0064:
numBins = 64 / 2;
break;
case FftSizes.Size0256:
numBins = 256 / 2;
break;
case FftSizes.Size1024:
numBins = 1024 / 2;
break;
default:
ConfigConversions.DisplayErrorMessageAndClose("Could not convert FFT Size for FFT bins");
break;
}
int rate = 0;
switch (timeRate)
{
case TdSampleRates.Sample0250Hz:
rate = 250;
break;
case TdSampleRates.Sample0500Hz:
rate = 500;
break;
case TdSampleRates.Sample1000Hz:
rate = 1000;
break;
default:
ConfigConversions.DisplayErrorMessageAndClose("Could not convert TDSampleRate for FFT bins");
break;
}
double binWidth = rate / 2.0 / numBins;
for (int i = 0; i < numBins; i++)
{
bins.Add(i * binWidth);
}
return(bins);
}
/// <summary>
/// Converts the FFT size from config file to correct api call format
/// </summary>
/// <param name="FftSizesToConvert">integer value of 64, 256, or 1024</param>
/// <returns>Medtronic api format for FftSizes or displays error and closes program if incorrect</returns>
public static FftSizes FftSizesConvert(int FftSizesToConvert)
{
FftSizes fftSizes = 0;
switch (FftSizesToConvert)
{
case 64:
fftSizes = FftSizes.Size0064;
break;
case 256:
fftSizes = FftSizes.Size0256;
break;
case 1024:
fftSizes = FftSizes.Size1024;
break;
default:
DisplayErrorMessageAndClose("Couldn't convert FFT Size");
break;
}
return(fftSizes);
}
