Which C# FFT Implementation Offers the Best Speed and Reliability for Commercial Use?

Finding a Fast and Reliable FFT Implementation in C#

This question seeks a high-quality implementation of the Fast Fourier Transform (FFT) in C# that can be utilized in a commercial product.

Response:

While commendable attempts have been made, such as the AForge implementation, its perceived mistakes hinder its suitability for commercial applications.

Recommended Options:

• ExocortexDSP v1.2 (FFTW Codebase): This library provides standalone FFT code that avoids potential issues encountered with other libraries.
• FFTW with C# Wrapper: A free, high-performance FFT library originally developed in C with a C# wrapper.

Additional Resources:

• Math.Net library has a history of reliable FFT functionality, though certain aspects may require additional scrutiny.
• Stanford University's iTunes University lecture series on the Fourier Transform and its applications provides a comprehensive understanding of the topic.

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