Sebastian Krüger dac8ac4723 feat: implement real-time automation playback for volume and pan
Phase 9.3 - Automation Playback:
- Added real-time automation evaluation during playback
- Automation values are applied continuously via requestAnimationFrame
- Volume automation: Interpolates between points and applies to gain nodes
- Pan automation: Converts 0-1 values to -1 to 1 for StereoPannerNode

Implementation details:
- New applyAutomation() function runs in RAF loop alongside level monitoring
- Evaluates automation at current playback time using evaluateAutomationLinear
- Applies values using setValueAtTime for smooth Web Audio API parameter changes
- Automation loop lifecycle matches playback (start/pause/stop/cleanup)
- Respects automation mode (only applies when mode !== 'read')

Technical improvements:
- Added automationFrameRef for RAF management
- Proper cleanup in pause(), unmount, and playback end scenarios
- Integrated with existing effect chain restart mechanism
- Volume automation multiplied with track gain (mute/solo state)

Next steps:
- Effect parameter automation (TODO in code)
- Automation recording (write mode implementation)
- Touch and latch modes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-18 19:06:02 +01:00

Audio UI

A sophisticated browser-only audio editor built with Next.js 16, React 19, and Tailwind CSS 4.

Features (Planned)

  • 100% Client-Side: All audio processing happens in your browser
  • Multi-Track Editing: Professional multi-track audio editing
  • Advanced Effects: EQ, compression, reverb, delay, and more
  • Automation: Automate volume, pan, and effect parameters
  • Recording: Record audio directly from your microphone
  • Analysis Tools: Frequency analyzer, spectrogram, and loudness metering
  • Export Formats: WAV, MP3, OGG, FLAC
  • Project Management: Save and load complete projects
  • Privacy-First: No uploads, all data stays local in your browser

Tech Stack

  • Next.js 16 with React 19
  • TypeScript 5
  • Tailwind CSS 4 with OKLCH colors
  • Web Audio API for audio processing
  • Canvas API for waveform visualization
  • IndexedDB for project storage

Getting Started

This project is currently in the planning phase. See PLAN.md for the complete implementation plan.

Development (Coming Soon)

# Install dependencies
pnpm install

# Run development server
pnpm dev

# Build for production
pnpm build

Inspiration

Inspired by AudioMass and professional DAWs like Ableton Live, Logic Pro, and FL Studio.

License

TBD

Contributing

This is a personal project, but suggestions and ideas are welcome!

Description
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Readme 2.4 MiB
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TypeScript 98.8%
CSS 1.1%
Dockerfile 0.1%