https://github.com/iang/react-music-visualiser

A simple React experiment that creates Visualisation from an audio source
https://github.com/iang/react-music-visualiser

Last synced: 2 days ago
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A simple React experiment that creates Visualisation from an audio source

• Host: GitHub
• URL: https://github.com/iang/react-music-visualiser
• Owner: IanG
• Created: 2024-07-18T18:06:48.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-07-19T13:19:12.000Z (7 months ago)
• Last Synced: 2024-11-30T11:08:48.357Z (2 months ago)
• Language: TypeScript
• Homepage:
• Size: 39.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# react-music-visualiser

A simple React experiment that creates Visualisation from an audio source using the [WEB Audio API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API).  This example draws a very typical Spectrum Analyser visualisation.  Once you have access to the frequency data you could render any visualisation you wish.

The experiment makes use of an [AnalyserNode](https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode) object to set the [Fast Fourier transform](https://en.wikipedia.org/wiki/Fast_Fourier_transform) window size - 256 in this case.  This size will dictate how many elements will be returned when the `getByteFrequencyData` method is called.  Each element in the array represents an audio frequency (Hz) band and its decibel value (0-255).  A HTML Canvas is then used to plot each frequencies value onto the screen as the audio plays.