record audio from browser and visualize in real time

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I am looking for a package which will take input of audio from browser through microphone then visualize it in the real time.Any javascript package available to implement.I check most of the audio visualizer but they need audio file .I want the package should directly get it from microphone in browser and then show visualization.I am implementing it in the nodejs so need something in java script

webrtc node.js audio visualization javascript
1 Answers

Google search of "web audio api visualizer with microphone" should have obviously pulled some decent results for you :)

local microphone stream + Web Audio api + canvas are the main requirements here!

  1. Start with this volume meter example that gets input from microphone using webrtc api and show some visuals in GUI

  2. Explore more examples from https://webaudiodemos.appspot.com/

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