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Real FFT is not really real. #622

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raspyweather opened this issue Jan 28, 2019 · 0 comments
Open

Real FFT is not really real. #622

raspyweather opened this issue Jan 28, 2019 · 0 comments

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@raspyweather
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@raspyweather raspyweather commented Jan 28, 2019

The implemented forward real fourier transformation does return an mixed array of real/imaginary values, which is not documented.
I suggest either implementing a real-in-real-out version or pointing the data format out.

mathnet-numerics/src/Numerics/Providers/FourierTransform/Managed/ManagedFourierTransformProvider.cs

Line 246 in f303246

samples[j++] = data[i].Imaginary;

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