public void CheckWithLinq(int channelCount, int sourceLength, int windowLength, int position)
{
var random = new Random(57);
var source = new double[channelCount][];
for (var ch = 0; ch < channelCount; ch++)
{
source[ch] = Enumerable.Range(0, sourceLength).Select(t => random.NextDouble()).ToArray();
}
var window = WindowFunctions.Hann(windowLength);
var expected = new Complex[channelCount][];
for (var ch = 0; ch < channelCount; ch++)
{
expected[ch] = source[ch].Skip(position).Take(windowLength).Select(value => (Complex)value).ToArray();
for (var t = 0; t < expected.Length; t++)
{
expected[ch][t] *= window[t];
}
}
var actual = Framing.GetFrameComplex(source, window, position);
for (var ch = 0; ch < channelCount; ch++)
{
for (var t = 0; t < actual.Length; t++)
{
Assert.AreEqual(expected[ch][t].Real, actual[ch][t].Real, 1.0E-9);
Assert.AreEqual(expected[ch][t].Imaginary, actual[ch][t].Imaginary, 1.0E-9);
}
}
}
[DataRow(10, 30, -20)] // Source is shorter than frame
public void CheckWithNaiveImplementation(int sourceLength, int windowLength, int position)
{
var random = new Random(57);
var source = Enumerable.Range(0, sourceLength).Select(t => random.NextDouble()).ToArray();
var window = WindowFunctions.Hann(windowLength);
var expected = GetFrameComplex_Naive(source, window, position);
var actual = Framing.GetFrameComplex(source, window, position);
for (var t = 0; t < actual.Length; t++)
{
Assert.AreEqual(expected[t].Real, actual[t].Real, 1.0E-9);
Assert.AreEqual(expected[t].Imaginary, actual[t].Imaginary, 1.0E-9);
}
}