private void Morphing()
{
int startPos = (int)RectangleUI.X0;
int err = (SelectedData.Count() % 2);
SelectedData.RemoveRange((SelectedData.Count() - 1 - err), err);
Complex[] tempFFT = FFT2Helper.fft(SelectedData.ToArray());
int start = 0;
int count = 90;
int dest = 10;
tempFFT.ToList().GetRange(start, count).CopyTo(tempFFT.ToArray(), dest);
for (int i = start; i < dest - start; i++)
{
tempFFT[i] = new Complex(0, 0);
}
for (int i = start; i < start + count; i++)
{
tempFFT[(tempFFT.Count() - 1) - i] = tempFFT[i];
}
IFFT(tempFFT, startPos);
// Line.Points.AddRange(res.ToList());
Model.InvalidatePlot(true);
}
private void Morphing2()
{
int startPos = (int)RectangleUI.X0;
DataPoint[] res = new DataPoint[SelectedData.Count() - 2048];
for (int x = 0; x < SelectedData.Count() - 2048; x += 100)
{
if (x + 2048 < SelectedData.Count() - 2048)
{
Complex[] tempFFT = FFT2Helper.fft(SelectedData.GetRange(x, 2048).ToArray());
int start = 0;
int count = 900;
int dest = 10;
tempFFT.ToList().GetRange(start, count).CopyTo(tempFFT.ToArray(), dest);
for (int i = start; i < dest - start; i++)
{
tempFFT[i] = new Complex(0, 0);
}
for (int i = start; i < start + count; i++)
{
tempFFT[(tempFFT.Count() - 1) - i] = tempFFT[i];
}
IFFT(tempFFT, startPos + x);
}
}
// Line.Points.AddRange(res.ToList());
Model.InvalidatePlot(true);
}
private void SelectDataChanged(List <Complex> selectedData, int start)
{
FFTLine.Points.Clear();
FFTcom = FFT2Helper.fft(selectedData.ToArray()).ToList();
int x = 0;
FFTcom.ForEach(comp =>
{
FFTLine.Points.Add(new DataPoint(x, comp.Magnitude));
x++;
}
);
FFTModel.InvalidatePlot(true);
}
private void Process(int start, int end)
{
FFTLine.Points.Clear();
int err = (SelectedData.Count() % 2);
SelectedData.RemoveRange((SelectedData.Count() - 1 - err), err);
Val[] temp = new Val[SelectedData.Count];
int i1 = 0;
FFT2Helper.fft(SelectedData.ToArray()).ToList().ForEach(p =>
{
temp[i1] = new Val();
temp[i1].Magnitude += p.Magnitude;
temp[i1].Rep++;
i1++;
});
for (int i = 0; i < SelectedData.Count / 2; i++)
{
temp[i].Magnitude = (temp[i].Magnitude / SelectedData.Count);
FFTLine.Points.Add(new DataPoint(i, temp[i].Magnitude));
}
FFTModel.Axes[0].AbsoluteMaximum = temp.Count() / 2;
//FFTModel.Axes[0].MaximumRange = temp.Count() / 2;
//FFTModel.Axes[0].MinimumRange = temp.Count() / 2;
FFTModel.Axes[1].Maximum = FFTLine.Points.Select(p => p.Y).Max();
FFTModel.Axes[0].MajorStep = (FFTModel.Axes[0].MaximumRange / 100) * 10;
MaxFFTWidth = temp.Count() / 2;
// FFTWidth = MaxFFTWidth - 1;
FFTModel.InvalidatePlot(true);
}
private void Process2(int start, int end)
{
//Сдвиг окна (shift 500 - width 512)
int shift = 256;
int width = 1024;
//Диапазон частот (256 - до 22100Hz, 128 - до 11050Hz)
int freq_range = 256;
double[] func = FFTHelper.WindowFunc(SelectedWindowFunc, width);
Bitmap btm = new Bitmap((end - start) / shift, 256);
System.Drawing.Color[] freq = new System.Drawing.Color[freq_range];
int btm_i = 0;
FFTLine.Points.Clear();
double[] result = new double[width];
for (int x = 0; x < SelectedData.Count() - width; x += shift)
{
int i = 0;
int ii = 0;
if (x + width < SelectedData.Count() - 1)
{
FFT2Helper.fft(SelectedData.GetRange(x, width).ToArray()).ToList().ForEach(p =>
{
p = p.Magnitude * func[ii];
int Db = (int)(GetYPosLog(p) + 5) * 8;
int intense1 = Db <= 0 ? 0 : Db;
intense1 = intense1 > 255 ? 255 : intense1;
// intense1 = Math.Abs(intense1 - 255) ;
if (i < freq.Count())
{
freq[i] = System.Drawing.Color.FromArgb(255, intense1, intense1, 50);
}
i++;
ii++;
});
for (int yi = freq.Count() - 1; yi > 0; yi--)
{
btm.SetPixel(btm_i, yi, freq[Math.Abs(yi - (freq.Count() - 1))]);
}
}
btm_i++;
}
Spectrogramm = BitmapToImage(btm);
//for (int i = 0; i < 2048; i++)
//{
// temp[i].Magnitude = (temp[i].Magnitude / 2048);
// // temp[i].Magnitude = temp[i].Rep > cons ? (temp[i].Magnitude / temp[i].Rep) : 0;
// FFTLine.Points.Add(new DataPoint(i, temp[i].Magnitude));
//}
//FFTModel.InvalidatePlot(true);
}
