fft - 技术专题

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

Automagically synchronize subtitles with video.

A Swift library that uses the Accelerate framework to provide high-performance functions for matrix math, digital signal processing, and image manipulation.

Browser-based ground station suite for celestial body, mission and satellite tracking, SDR reception, hardware control, and telemetry decoding

Math.NET Numerics

Software defined radio receiver powered by GNU Radio and Qt.

Audio Tools (a powerful Audio library for Microcontrollers and the Desktop)

Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)

Vulkan/CUDA/HIP/OpenCL/Level Zero/Metal Fast Fourier Transform library

Spectrum analyzer for multiple SDR platforms (PyQtGraph based GUI for soapy_power, hackrf_sweep, rtl_power, rx_power and other backends)

🇸Superpowered Audio, Networking and Cryptographics SDKs. High performance and cross platform on Android, iOS, macOS, tvOS, Linux, Windows and modern web browsers.

Generate waveform images from audio files on iOS, macOS & visionOS in Swift. Native SwiftUI & UIKit views.

Theory of digital signal processing (DSP): signals, filtration (IIR, FIR, CIC, MAF), transforms (FFT, DFT, Hilbert, Z-transform) etc.

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

Realtime audio analysis in Python to extract audio features from streaming audio and send them over OSC to any client app.

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

A fast and accurate contest rating prediction web application

autocorrelation-based O(NlogN) pitch detection

DCT (discrete cosine transform) functions for pytorch

Audio Watermarking