/// <summary>
/// Executes the block
/// </summary>
public override void Execute()
{
var inputNode = InputNodes[0].ConnectingNode as BlockOutputNode;
if (inputNode == null || inputNode.Object == null)
{
return;
}
OutputNodes[0].Object.Clear();
OutputNodes[1].Object.Clear();
foreach (var inputSignal in inputNode.Object)
{
var fft = WaveMath.UpSample(inputSignal.Samples);
ManagedFFT.Instance.FFT(ref fft, true, Mode);
var abs = WaveMath.AbsFromComplex(fft, 0, fft.Length / 2);
abs = WaveMath.Normalize(abs, abs.Length);
var absSignal = new Signal(abs)
{
Start = 0,
Finish = abs.Length - 1
};
var fftSignal = new Signal(fft)
{
Start = 0,
Finish = fft.Length - 1,
IsComplex = true,
SamplingInterval = fft.Length
};
OutputNodes[0].Object.Add(absSignal);
OutputNodes[1].Object.Add(fftSignal);
}
if (Cascade && OutputNodes[0].ConnectingNode != null)
{
OutputNodes[0].ConnectingNode.Root.Execute();
}
if (Cascade && OutputNodes[1].ConnectingNode != null)
{
OutputNodes[1].ConnectingNode.Root.Execute();
}
}
public void TestAbsFromComplex()
{
var input = new[] { 2.1, 3.2, 1, -1.3, -100, 145, -2 };
var expected = new[] { 3.8275318418009276, 1.6401219466856727, 176.13914953808538, 2 };
Assert.IsTrue(TestUtils.SequenceEquals(expected, WaveMath.AbsFromComplex(input)));
var signal = new Signal(input)
{
IsComplex = true
};
WaveMath.Abs(ref signal, input);
Assert.IsTrue(TestUtils.SequenceEquals(expected, signal.Samples));
input = new double[] { };
expected = new double[] { };
Assert.IsTrue(TestUtils.SequenceEquals(expected, WaveMath.AbsFromComplex(input)));
}