AudioMass

日本語のREADMEはこちらです: README.ja.md

A free, open source, web-based audio and waveform editor. It runs entirely in the browser with no backend or plugins required.

Live Demo

https://audiomass.co

Screenshot

The main editor view, showing a waveform with a floating, dockable Frequency Analyser panel.

Features

• Editing: Fast, responsive waveform editing with cut, copy, paste, trim, and zoom.
• Effects: A suite of effects including Gain, Fade In/Out, Invert, Reverse, Speed, and a parametric EQ.
• Automation: Apply gradual effects over time using automation points.
• Format Support: Load and export MP3, WAV, FLAC, OGG, and AIFF files.
• Analysis: View a frequency spectrum analysis of your audio.
• Modern UI: Features dockable panels for a flexible and customizable user interface.
• Session Management: Sessions are saved in your browser’s IndexedDB, using LZ4 compression for speed and efficiency.
• Workflow: Drag-and-drop file loading and a robust undo/redo history.
• Recording: Record audio directly from your microphone.

Requirements

• A modern web browser (Chrome, Firefox, Safari recommended).
• For local development: Go (1.18+) or Python 3.

Getting Started

1. Clone this repository or download it as a ZIP file.
2. Navigate into the src directory from your command line.

   cd AudioMass/src
   

3. Run the local development server.
   • Using Go:

     go run audiomass-server.go
     

   • Or, using Python:

     python audiomass-server.py
     

4. Open your browser and navigate to http://localhost:5055/.

License

MIT License — see LICENSE.