public static float[] MakeLowPassKernel(double sampleRate, int filterOrder, double cutoffFrequency, WindowType windowType)
{
filterOrder |= 1;
float[] array = FilterBuilder.MakeSinc(sampleRate, cutoffFrequency, filterOrder);
float[] window = FilterBuilder.MakeWindow(windowType, filterOrder);
FilterBuilder.ApplyWindow(array, window);
FilterBuilder.Normalize(array);
return(array);
}
public unsafe IQBalancer()
{
this._dcTimeConst = 0.0001f;
this._dcRemoverIBuffer = UnsafeBuffer.Create(sizeof(DcRemover));
this._dcRemoverI = (DcRemover *)(void *)this._dcRemoverIBuffer;
this._dcRemoverI->Init(this._dcTimeConst);
this._dcRemoverQBuffer = UnsafeBuffer.Create(sizeof(DcRemover));
this._dcRemoverQ = (DcRemover *)(void *)this._dcRemoverQBuffer;
this._dcRemoverQ->Init(this._dcTimeConst);
float[] buffer = FilterBuilder.MakeWindow(WindowType.Hamming, 1024);
this._windowBuffer = UnsafeBuffer.Create(buffer);
this._windowPtr = (float *)(void *)this._windowBuffer;
this._isMultithreaded = (Utils.ProcessorCount > 1);
}
public IQBalancer()
{
_dcRemoverIBuffer = UnsafeBuffer.Create(sizeof(DcRemover));
_dcRemoverI = (DcRemover *)_dcRemoverIBuffer;
_dcRemoverI->Init(DcTimeConst);
_dcRemoverQBuffer = UnsafeBuffer.Create(sizeof(DcRemover));
_dcRemoverQ = (DcRemover *)_dcRemoverQBuffer;
_dcRemoverQ->Init(DcTimeConst);
var window = FilterBuilder.MakeWindow(WindowType.Hamming, FFTBins);
_windowBuffer = UnsafeBuffer.Create(window);
_windowPtr = (float *)_windowBuffer;
_isMultithreaded = Environment.ProcessorCount > 1;
}
public static Complex[] MakeKernelFromFFT(Complex[] buf, int len, WindowType window, int order)
{
float[] array = FilterBuilder.MakeWindow(window, order + 1);
Complex[] array2 = new Complex[order + 1];
for (int i = 0; i < order + 1; i++)
{
int num = i - order / 2;
if (num < 0)
{
num += len;
}
Complex.Mul(ref array2[i], buf[num], array[i]);
}
return(array2);
}
unsafe static IQBalancer()
{
IQBalancer._windowBuffer = UnsafeBuffer.Create(FilterBuilder.MakeWindow(WindowType.BlackmanHarris7, 128));
IQBalancer._windowPtr = (float *)(void *)IQBalancer._windowBuffer;
}
