Open source repositories tagged with #fast-fourier-transform, ranked by health score.
Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)
FANS: an open-source, highly efficient, and parallel FFT-based homogenization solver for microscale multiphysics problems.