public SampleAggregator(int fftLength = 1024)
{
if (!IsPowerOfTwo(fftLength))
{
throw new ArgumentException("FFT Length must be a power of two");
}
this.m = (int)Math.Log(fftLength, 2.0);
this.fftLength = fftLength;
this.fftBuffer = new Complex[fftLength];
this.fftArgs = new FftEventArgs(fftBuffer);
this.fftBufferQueue = new Queue <Complex>(fftLength);
this.bffFull = false;
}
void FftCalculated(object sender, FftEventArgs e)
{
double sumFreq1 = 0;
double sumFreq2 = 0;
double sumFreq3 = 0;
double temp = 0;
FftChart.Series[fft].Points.Clear();
for (var i = 0; i < e.Result.Length / 2; i++)
{
temp = Math.Sqrt(e.Result[i].X * e.Result[i].X + e.Result[i].Y * e.Result[i].Y);
if (i < 3)
{
sumFreq1 = sumFreq1 + temp;
}
else if (i < 10)
{
sumFreq2 = sumFreq2 + temp;
}
else
{
sumFreq3 = sumFreq3 + temp;
}
FftChart.Series[fft].Points.AddY(temp);
}
if (counter2 > 100)
{
SumFreq1Chart.Series[sumFreq1series].Points.Remove(SumFreq1Chart.Series[sumFreq1series].Points.First());
SumFreq2Chart.Series[sumFreq2series].Points.Remove(SumFreq2Chart.Series[sumFreq2series].Points.First());
SumFreq3Chart.Series[sumFreq3series].Points.Remove(SumFreq3Chart.Series[sumFreq3series].Points.First());
}
else
{
counter2++;
}
SumFreq1Chart.Series[sumFreq1series].Points.AddY(sumFreq1);
SumFreq2Chart.Series[sumFreq2series].Points.AddY(sumFreq2);
SumFreq3Chart.Series[sumFreq3series].Points.AddY(sumFreq3);
}