Web Audio Tools
Browser-based audio applications, AudioWorklet processors, real-time DSP in the browser, WebAssembly audio ports.
Joel Löf — Audio Software Developer for Hire
Custom audio software, shipped. From browser-based DAWs to native plugins — audio ideas become shipped products. Web, desktop, or mobile.
What you get
Section titled “What you get”A freelance audio software specialist with 10+ years in the audio industry — from live touring, to broadcast engineering at Swedish Radio, to building game audio middleware. TypeScript, Rust, and C++ — the rare intersection of audio domain expertise and modern software engineering.
Audio Plugins
VST3, CLAP, and AU plugin development in C++ and Rust. From DSP algorithm to shipped product with GUI.
ML-Powered Audio
Source separation, classification, enhancement — machine learning applied to audio problems.
Real-Time Networking
Low-latency audio streaming, WebRTC, WebSocket-based audio transport for collaborative or broadcast applications.
Proof of work
Section titled “Proof of work”Here’s a selection of shipped projects that demonstrate the range and depth of what I build for clients.
Audio Plugins & Systems Programming
Section titled “Audio Plugins & Systems Programming” VST Host — Full plugin host in Rust 1,400+ tests, process-per-plugin sandboxing, DAG-based routing, crash recovery. Deep systems programming from COM interop to real-time audio.
Compressor Plugin — C++ dynamics processor A complete audio dynamics plugin with detailed signal analysis. Demonstrates DSP algorithm design, testing methodology, and technical documentation.
Monster — Stereo field manipulation plugin A C++/JUCE plugin for stereo field manipulation. Designed in collaboration with a UI designer for professional audio environments.
Web Audio & Browser Tools
Section titled “Web Audio & Browser Tools” Sidechain Compressor — AudioWorklet processor A sidechainable compressor running as a Web Audio worklet. Real-time DSP in the browser.
Browser Codec Support — Interactive test tool Instantly check which audio codecs your browser supports. A practical tool used by audio developers.
Machine Learning & Audio
Section titled “Machine Learning & Audio” Music Source Separation — ML vocal isolation Separating vocals from backtracks using TensorFlow/Keras. Trained on cloud GPUs with a web interface for testing.
Cough Detection — Audio classification ML-based audio event detection using Python. Identifying coughs in audio signals.
Try live demos
Section titled “Try live demos”These projects run right in your browser — no install needed.
Codec Support Test Check browser audio codec support in real-time.
Guitar Chords Interactive guitar chord finder and visualiser.
Snake Classic game built with Rust, Yew, and WebAssembly.
Housing Cost Calculator Interactive calculator with charts.
Technologies
Section titled “Technologies”Languages — TypeScript · Rust · C++ · Python
Web — Astro · React · Web Audio API · WebAssembly · WebGPU
Audio — VST3 · CLAP · AudioWorklet · WaveSurfer.js
Tools — Bun · Playwright · Git · Linux · Docker
From the blog
Section titled “From the blog”Technical articles on audio software development:
Building a VST Host in Rust Lessons from 1,400 tests — COM interop, crash recovery, and why Rust works for audio infrastructure.
Web Audio API for Real-Time DSP A practical guide to AudioWorklet — from basic gain to custom compressors.
Porting C++ Audio to WebAssembly Build systems, memory management, and AudioWorklet integration.
Audio Plugins: C++, Rust, or Web? When to use each platform and the hybrid approach.