/// <summary>
/// Convolves the specified finite signal with an enumerable signal.
/// </summary>
/// <param name="s1">The finite signal.</param>
/// <param name="s2">The enumerable signal.</param>
/// <returns></returns>
/// <exception cref="SamplerateMismatchException"></exception>
public static IEnumerableSignal Convolve(this IFiniteSignal s1, IEnumerableSignal s2)
{
if (s1.SampleRate != s2.SampleRate)
{
throw new SamplerateMismatchException();
}
return(new EnumerableSignal(Dsp.Convolve(s2.Signal, s1.Signal), s1.SampleRate, s1.Start + s2.Start)
{
DisplayName = "convolution result"
});
}
/// <summary>
/// Computes the cross-correlation of a finite and a enumerable signal.
/// </summary>
/// <param name="s1">The finite signal.</param>
/// <param name="s2">The enumerable signal.</param>
/// <returns></returns>
/// <exception cref="SamplerateMismatchException"></exception>
public static IEnumerableSignal CrossCorrelate(this IFiniteSignal s1, IEnumerableSignal s2)
{
if (s1.SampleRate != s2.SampleRate)
{
throw new SamplerateMismatchException();
}
return(new EnumerableSignal(Dsp.CrossCorrelate(s2.Signal, s1.Signal), s1.SampleRate, s1.Start - s2.Start)
{
DisplayName = "cross correlation"
});
}
/// <summary>
/// Processes the specified signal with the provided filter.
/// </summary>
/// <param name="filter">The filter.</param>
/// <param name="signal">The signal.</param>
/// <returns>The filtered signal</returns>
/// <exception cref="SamplerateMismatchException"></exception>
public static IEnumerableSignal Process(this IFilter filter, IEnumerableSignal signal)
{
if (filter.Samplerate != signal.SampleRate)
{
throw new SamplerateMismatchException();
}
if (filter.HasInfiniteImpulseResponse || !(signal is FiniteSignal))
{
return(new EnumerableSignal(filter.Process(signal.Signal), filter.Samplerate, signal.Start)
{
DisplayName = "filter result"
});
}
return(new FiniteSignal(filter.Process(signal.Signal).ToReadOnlyList(), filter.Samplerate, signal.Start)
{
DisplayName = "filter result"
});
}
