zldsp::fft

Tue, 04 Aug 2026 00:00:00 +0000

zldsp::fft is a header-only C++ Fast Fourier Transform (FFT) library built with Google Highway. zldsp::fft is licensed under Apache-2.0 license. You can obtain the source code at GitHub. zldsp::fft supports SSE2/SSE4/AVX2/NEON SIMD targets and both AoS/SoA layouts for complex numbers.

Usage

C++ Standard: C++20 or higher
Google Highway: You must include and link Google Highway in your project. The headers in this library expect the following includes to be resolvable:

#include <hwy/aligned_allocator.h>
#include <hwy/highway.h>

Compiler Flags

To activate SIMD, you must set the correct compilation flags. Highway will automatically detect the target architecture from these flags.

FFT on ZL Audio

zldsp::fft

Usage

Compiler Flags