Top 8 C Fft Projects

FFmpeg

485 42,250 10.0 C

Mirror of https://git.ffmpeg.org/ffmpeg.git

Project mention: Show HN: CompressX, my FFmpeg wrapper for macOS, made $9k in the last 4 months | news.ycombinator.com | 2024-04-10

GPL2
Since FFmpeg is GPL2, doesn’t that require CompressX to disclose its source code?
IANAL, apologies if I miss understand license requirements.
https://github.com/FFmpeg/FFmpeg?tab=License-1-ov-file

sleef

17 583 8.1 C

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

Project mention: The Case of the Missing SIMD Code | news.ycombinator.com | 2023-06-08

I'm the main author of Highway, so I have some opinions :D Number of operations/platforms supported are important criteria.
A hopefully unbiased commentary:
Simde allows you to take existing nonportable intrinsics and get them to run on another platform. This is useful when you have a bunch of existing code and tight deadlines. The downside is less than optimal performance - a portable abstraction can be more efficient than forcing one platform to exactly match the semantics of another. Although a ton of effort has gone into Simde, sometimes it also resorts to autovectorization which may or may not work.
Eigen and SLEEF are mostly math-focused projects that also have a portability layer. SLEEF is designed for C and thus has type suffixes which are rather verbose, see https://github.com/shibatch/sleef/blob/master/src/libm/sleef... But it offers a complete (more so than Highway's) libm.

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
CMSIS-DSP

4 408 8.1 C

CMSIS-DSP embedded compute library for Cortex-M and Cortex-A

Project mention: Tips for DSP | /r/embedded | 2023-05-08

Since you're using an ARM, you've also got access to CMSIS-DSP, which has most basic DSP functions you'll need already hand optimized for whichever ARM core you have: https://github.com/ARM-software/CMSIS-DSP

FftSharp

3 275 7.2 C

A .NET Standard library for computing the Fast Fourier Transform (FFT) of real or complex data
CCWT

1 146 0.0 C

Complex Continuous Wavelet Transform
libmpegh

4 81 5.0 C

MPEG-H 3D Audio Low Complexity Profile Decoder. Encoder: https://github.com/ittiam-systems/libmpeghe

Project mention: Best solution for decoding mpeg-h 3d Audio. | /r/audiophile | 2023-05-29

libspecbleach

1 55 10.0 C

C library for audio noise reduction and other spectral effects

Project mention: SoX noise reduction | /r/linuxaudio | 2023-07-12

https://github.com/lucianodato/libspecbleach is a marvelous denoiser. This library includes two example programs (with hardcoded parameters) that you can try as is or customize to your liking. adenoise_demo works without you specifying the section of noise, but the first half a second of recorded audio will be gradually less noisy while it adapts. denoise_demo learns the noise profile on the first 4096 samples and denoises the rest (so the output is 4096 samples short).

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
ESP32-oled-spectrum

1 34 3.7 C

High-performance, high-resolution Constant-Q audio spectrum visualizer using an ESP32 and an OLED. Built in Arduino.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-04-10.