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5 followers · 21 following
  • GrepAwk
  • Palo Alto, CA

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Achievement: QuickdrawAchievement: Pull Sharkx3Achievement: YOLOAchievement: Pair ExtraordinaireAchievement: Arctic Code Vault Contributor

Achievements

Achievement: QuickdrawAchievement: Pull Sharkx3Achievement: YOLOAchievement: Pair ExtraordinaireAchievement: Arctic Code Vault Contributor

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yishengjiang99/README.md

Yisheng Jiang

GrepAwk · Palo Alto, CA

Building browser-native and on-device tools for audio, video, and music. Focused on WebAssembly, Core ML, low-level DSP, and zero-copy pipelines.

Focus Areas

  • Audio / DSP / MIDI — Web Audio API, SoundFont engines, parametric EQ, FFT, wavetable synthesis, AudioWorklets
  • Video — FFmpeg + WASM video editing; maintained multithreaded ffmpeg.wasm fork (FFmpeg 8.0.1 on Emscripten 4)
  • On-device iOS ML — Core ML + AVFoundation for optical music recognition (OMR), polyphonic pitch detection → engraved sheet music, and camera settings optimization
  • Low-level systems — C, Swift, Rust, WebAssembly, GPU/NN acceleration, lock-free designs

Highlighted Projects

Project Description Language
finalcut FFmpeg + Grok powered video editor → grepawk.com JavaScript
omr-sheet-cam On-device OMR with zero-copy ORT, parallel staffs, SMF MIDI + highlights Swift
earsheet Polyphonic pitch → engraved sheet music (Core ML / fine-tuned Basic Pitch) C
photo-recipes Core ML + AVFoundation camera settings optimizer Swift
sf2rend MIDI / SoundFont player JavaScript
ffmpeg.wasm Maintained multithreaded FFmpeg WASM fork C

Other Work

Open to collaboration on audio, video, WASM, and on-device ML.

Pinned Loading

  1. finalcut finalcut Public

    Ffmpeg and Grok powered video editor. Hosted at https://grepawk.com

    JavaScript 1

  2. omr-sheet-cam omr-sheet-cam Public

    On-device OMR (homr): zero-copy ORT I/O Binding decoder KV-cache, parallel staffs, SMF MIDI + highlights. AGPL.

    Swift

  3. filmcraft filmcraft Public

    Forked from storytold/filmcraft

    FilmCraft: An open-source, nonlinear video editor written by scratch in pure Rust

    Rust

  4. photo-recipes photo-recipes Public

    Optimize camera settings with CoreML AVFoundation GPU neural network

    Swift

  5. gbk gbk Public

    re-imagination of the iconic GarageBand with agentic layer

    TypeScript