jasonconway
New member
I wanted to share a small wrapper function I wrote for the CMSIS arm_rfft_fast_f32() function. It is intended to provide a higher efficiency, near-drop-in-replacement for instances where arm_cfft_f32() is being used with real-valued sequences, and an algorithm based around using n+1 complex-conjugate-symmetric coefficients (as output by arm_rfft_fast_f32()) isn't available or unrealistic to implement.
A detailed description alongside some performance comparisons can be found on the project's GitHub page.
Its use cases are likely quite niche, but hopefully someone finds it useful!
A detailed description alongside some performance comparisons can be found on the project's GitHub page.
Its use cases are likely quite niche, but hopefully someone finds it useful!