♪♫ See your music with audioMotion! ♪♫
- High-resolution (retina / HiDPI ready) real-time audio spectrum analyzer with fullscreen support
- Logarithmic frequency scale with customizable range
- 12 visualization modes: visualize discrete frequencies, or octave bands based on the equal tempered scale
- 17 beautiful color gradients, with optional vintage LEDs and variable luminance effects
- Customizable Web Audio API parameters (FFT size, sensitivity and time-smoothing constant)
- HTML5 audio player supports MP3, AAC (m4a), OGG and FLAC files (support may vary depending on browser)
- Visual file explorer and play queue with drag-and-drop functionality
- Support for M3U playlists (
- Visualize audio from your microphone (or “stereo mix”, if your soundcard supports it)
- Lightweight custom file server — also works on standard web servers with minimal configuration
- Client runs on any modern browser (tested with Firefox, Chrome and Safari)
The demo allows you to play audio files from your PC, load songs and streams from remote URLs and use the microphone input. The file explorer is not available, since there are no media files hosted on the demo server.
Also check out our ▶ YouTube channel for videos of some cool songs visualized with audioMotion!
Download the latest version from the releases page. Portable binaries are available for Windows, Linux and macOS.
Launch audioMotion and you’ll be asked for the path to your music folder. Only files under that folder will be accessible to the player.
You can also use the command line argument
-m to set the music folder when launching audioMotion:
audioMotion -m c:\users\john\music
This will start the server and should also launch the client in your browser.
The complete command line options are:
-m <path> : path to music directory -p <port> : change server listening port (default is 8000) -s : start server only (do not launch client) -e : allow external connections (by default, only localhost)
Please be aware that the
-e flag will expose the contents of the mounted folder to anyone in your network (and potentially to the entire internet!) — use it only if you’re in a trusted network and behind a firewall!
For full documentation summary, see the docs folder.
Discrete frequencies mode. User interface showing the file explorer and play queue.
1/12th-octave bands mode with LED effect and on-screen song information. User interface showing the settings panel.
Full screen view: 1/6th-octave bands, Regular bar spacing, 30Hz-16KHz, “Outrun” gradient, Reflex effect and complete on-screen information.
Full screen view: Area fill mode, 20Hz-22KHz, frequency scale on, “Rainbow” gradient.
Full screen view: 1/8th-octave bands mode with Luminance bars effect, 30Hz-16KHz, frequency scale on, “Tie Dye” gradient.
audioMotion was largely inspired by Soniq Viewer for iOS, by Yuji Koike.
Some of audioMotion’s great features are provided by these awesome open-source libraries:
- express - fast, unopinionated, minimalist web framework for node
- music-metadata-browser - stream and file based music metadata parser for the browser
- open - open stuff like URLs, files, executables
- pkg - single-command Node.js binary compiler
- readline-sync - synchronous Readline for interactively requesting user input via console
- scrollIntoViewIfNeeded 4 everyone - polyfill for non-standard scrollIntoViewIfNeeded() method
- Gradients Candy, Miami, Outrun and Tie Dye from Gradient Hunt
- Gradients Pacific Dream, Shahabi, Summer and Sunset from uiGradients
- The Apple ][ gradient was created based on this post by Creative Market
- Gradients used in the UI buttons are from ColorZilla’s Ultimate CSS Gradient Generator
- The audioMotion logo uses the Orbitron font by Matt McInerney
- Icons provided by icons8 licensed under Creative Commons Attribution-NoDerivs 3.0 Unported
These online references were invaluable for the development and improvement of audioMotion:
- HTML Canvas Reference @W3Schools
- Web Audio API documentation @MDN
- Web Audio API Specification
- What does the FFT data in the Web Audio API correspond to?
- HTML5 check if audio is playing?
- Unlocking Web Audio — the smarter way
- Equations for equal-tempered scale frequencies
- Fastest way to find the index of a child node in parent
audioMotion.js copyright (c) 2018-2020 Henrique Avila Vianna
Licensed under the GNU Affero General Public License, version 3 or later.