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This commit is contained in:
Ahmed Zamil
2022-11-05 17:48:30 +03:00
parent e83f51f952
commit f1d5b0a38b
12 changed files with 746 additions and 54 deletions
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55
Esiur.Analysis/Signals/DSP.cs
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@ -1,55 +0,0 @@
using System;
using System.Collections.Generic;
using System.Text;
namespace Esiur.Analysis.Signals
{
public static class DSP
{
public static double[] ConvolveMany(params double[][] signals)
{
var rt = signals[0];
for (var i = 1; i < signals.Length; i++)
rt = rt.Convolve(signals[i]);
return rt;
}
public static double[] Convolve(this double[] signal, double[] filter)
{
var length = signal.Length + filter.Length - 1;
var rt = new double[length];
//for (var i = 0; i < signal.Length; i++)
// for (var j = 0; j < filter.Length; j++)
// rt[i + j] += signal[i] * filter[j];
for (var i = 0; i < length; i++)
{
for (var j = 0; j < signal.Length && i - j >= 0 && i - j < filter.Length; j++)
{
rt[i] = signal[j] * filter[i - j];
}
}
return rt;
}
public static double[] CrossCorrelate(this double[] signal, double[] filter)
{
var length = signal.Length + filter.Length - 1;
var rt = new double[length];
for (var i = 0; i < length; i++)
{
for (var j = 0; j < signal.Length && j + i < filter.Length; j++)
{
rt[i] = signal[j] * filter[i + j];
}
}
return rt;
}
}
}