Which C# FFT Implementation Offers the Best Performance and Reliability?

Finding a Reliable FFT Implementation in C#

For developers seeking a fast and reliable FFT implementation in C#, several options are available.

AForge

While the AForge implementation is not suitable for commercial use due to its learning-oriented nature and errors, it can provide valuable insights for understanding the topic.

Math.Net

Math.Net's FFT implementation offers competitive performance, but some users may find its quirks regarding Fourier transforms and complex data inconvenient. Its source code, however, can provide a more direct and reliable approach.

Exocortex DSP Library

The FFT code extracted from the Exocortex DSP library is a reliable and efficient option. Math.Net's implementation is based on this library, but some users report better results with the original source code.

FFTW

FFTW is a renowned FFT library that offers high performance. While its core implementation is not in C#, a C# wrapper enables its use in various applications.

Stanford Lecture Series

For a deeper understanding of Fourier transforms and their applications, the free lecture series offered by a Stanford professor on iTunes University is highly recommended.

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