The Professional Web Audio Workstation
Convert, Edit, Equalize, and Calibrate directly in your browser.
SeapEngine is a high-performance, privacy-focused audio toolset built on the modern Web Audio API. It combines a batch file converter, a non-linear waveform editor, and advanced acoustic calibration tools into a single, sleek application.
Unlike traditional online converters, SeapEngine processes everything client-side. Your files never leave your device.
A robust batch processor designed for speed and security.
- Formats: WAV, MP3, FLAC, OGG.
- Quality Control: Custom sample rates (up to 96kHz), bit depths (up to 32-bit float), and bitrate sliders.
- Privacy First: Files are processed in memory using WebAssembly encoders (
lamejs,libflac,libvorbis). - Resilience: Built-in "Circuit Breaker" pauses queue on repeated errors.
- Bulk Export: Download individual files or auto-zip the entire batch.
A non-destructive audio manipulation environment.
- Visualization: smooth, zoomable canvas waveform renderer.
- Tools: Select, Cut, Hand/Pan.
- Real-time Effects Rack:
- 🎛 Parametric EQ: 3-band shelf/peak filters.
- 📉 Compressor: Dynamic range control with visual feedback.
- 🌫 Reverb: Convolution reverb engine with procedural impulse generation.
- 🔁 Delay: Feedback echo loop.
- Playlist: Manage multiple files in a session.
Automated headphone frequency correction.
- Massive Database: Integrates directly with the AutoEq repository, providing instant access to 4000+ headphone profiles.
- Algorithmic Generation: Calculates parametric EQ bands (Peaking, Low/High Shelf) to match your headphones to a target curve (Harman, Diffuse Field, or custom).
- Visualization: Interactive frequency response graph with target overlays and predicted correction.
- Export: Generate standardized EQ text files for use in system-wide equalizers (APO, Peace, etc.).
Tools for hifi and home theater enthusiasts.
- Speaker Calibration:
- Visual 2.0, 5.1, and 7.1 mapping.
- Per-channel Pink Noise generator.
- Integrated SPL Meter using your microphone for level balancing.
- Room Correction: Import room measurement files (REW/microphone) and generate corrective filters for specific speakers.
- Frontend: React 19, TypeScript
- Styling: Tailwind CSS (Custom "Meru Dark" theme)
- Audio Core: Native Web Audio API (
AudioContext,AudioWorklet) - Codecs:
lamejs(MP3)libflac.js(FLAC)libvorbis.js(OGG)
- Utilities:
jszipfor batch downloads.
To run SeapEngine locally:
- Node.js (v16 or higher)
- npm or yarn
-
Clone the repository
git clone https://github.com/username/seapengine.git cd seapengine -
Install dependencies
npm install
-
Start the development server
npm run dev
-
Open your browser to
http://localhost:5173(or the port shown in your terminal).
SeapEngine is designed with a "Zero-Upload" architecture.
- No Cloud Processing: All audio manipulation happens within your browser's sandboxed environment.
- File Validation: Input files are checked for "Magic Bytes" to prevent malicious file execution.
- Anti-Tamper: Basic protections against console injection attacks to protect non-technical users.
Contributions are welcome! Please feel free to submit a Pull Request.
- Fork the Project
- Create your Feature Branch (
git checkout -b feature/AmazingFeature) - Commit your Changes (
git commit -m 'Add some AmazingFeature') - Push to the Branch (
git push origin feature/AmazingFeature) - Open a Pull Request
Distributed under the MIT License. See LICENSE for more information.
If you enjoy using SeapEngine, consider supporting the development!
Built with 💜