noiz/README.md

# noiz://

![Logo](./noizmainlogo.png)

A browser-based 100%-local audio player with real-time spectrum visualization, VU metering, and comprehensive playlist management. Loaded entirely from a single `index.html` file - no build step, no server, no dependencies. Plays files from your local machine. That's it.

## Obligatory Screenshot
![Screenshot](./noizshot.png)

## Demo
There is a live demo available at [bsd.pm/noiz](https://bsd.pm/noiz/).

## Features

- **Real-time FFT spectrum analyzer** - smooth animated frequency bars with configurable window function (Hanning / Blackman-Harris) and adjustable peak decay
- **VU meter** - per-channel level display with peak indicators
- **Metadata parsing** - reads ID3v1 and ID3v2 tags (title, artist, album, genre, year), plus inline codec info for MP3 and FLAC
- **Playlist** - sortable by title, artist, filename, length, or genre; supports shuffle and repeat (off / all / one)
- **Crossfade** - optional gapless transition between tracks (1s–5s)
- **Drag & drop** - drop folders or individual files; handles nested directories via the File System Access API (with `webkitdirectory` fallback)
- **Keyboard shortcuts** - Space (play/pause), ← (previous), → (next)

## Usage

Open `index.html` in any modern browser. Click **+Folder**, **+Files**, or drag audio files onto the window.

## Known Limitations

- **File path display** - When adding individual files via **+Files** or drag-and-drop, browsers do not expose the full filesystem path for security reasons. Only the filename is shown in the tag editor. Using **+Folder** (which reads directory structure) provides the relative path within the selected folder.
- **Playback interruption on +Folder** - Opening the native directory picker suspends the browser's `AudioContext`, causing playback to stop. This is a browser-level security restriction (user gesture required for audio resume). Simply press play again after adding files.

## noizapp
There is a simple PoC Electron available to make noiz a stand-alone desktop "app":
https://codeberg.org/armin/noizapp


## License
noiz is released under the MIT license; see LICENSE file.