k2-fsa ORG

FSA/FST algorithms, differentiable, with PyTorch compatibility.

Speech-to-text, text-to-speech, speaker diarization, speech enhancement, source separation, and VAD using next-gen Kaldi with onnxruntime without Internet connection. Support embedded systems, Android, iOS, HarmonyOS, Raspberry Pi, RISC-V, RK NPU, Axera NPU, Ascend NPU, x86_64 servers, websocket server/client, support 12 programming languages

Sherpa-ONNX is a toolkit for running speech recognition, text-to-speech, speaker diarization, and other audio AI tasks entirely on-device across mobile, desktop, embedded hardware, and browsers, no internet connection required.

Fast and High-Quality Zero-Shot Text-to-Speech with Flow Matching

High-Quality Voice Cloning TTS for 600+ Languages

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Real-time speech recognition and voice activity detection (VAD) using next-gen Kaldi with ncnn without Internet connection. Support iOS, Android, Linux, macOS, Windows, Raspberry Pi, VisionFive2, LicheePi4A etc.

Speech-to-text server framework with next-gen Kaldi

Libriheavy: a 50,000 hours ASR corpus with punctuation casing and context

A torch implementation of a recursion which turns out to be useful for RNN-T.

Moved to https://github.com/k2-fsa/icefall

Hybrid Flow Matching and GAN with Multi-Resolution Network for Few-Step High-Fidelity Audio Generation

Some fast-ish algorithms for batch text search in moderate-sized collections, intended for data cleanup

Python wrapper for OpenFST and its extensions from Kaldi. Also support reading/writing ark/scp files

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Decoders from Kaldi using OpenFst

Colab notebooks for Next-gen Kaldi

sherpa-onnx Go package for speech recognition without network access, supporting Linux, macOS, Windows

sherpa with mlx

sherpa-onnx Go package for Windows

sherpa-onnx Go package for Linux

Source for next-gen Kaldi home page.

sherpa-onnx Go package for macOS

Scripts for analyzing the output of icefall's "diagnostics.py" code (--print-diagnostics=True option)

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sherpa-ncnn Go package for macOS

sherpa-ncnn Go package for speech recognition without network access, supporting Linux, macOS, Windows

sherpa-ncnn Go package for Linux

sherpa-ncnn Go package for Windows

Comments for Next-gen Kaldi website.