Web Audio to visualize and interact with waveforms

Question

How do I write a JavaScript program to display a waveform from an audio file? I want to use Web Audio and Canvas.

I tried this code:

(new window.Audi         


        

Answer 1

For a (hopefully) simple use and integration of a waveform with your app you might want to check what we are doing at IRCAM, specially the waveform-vis in this particular case.

It's all open source and aimed for modularity (and work in progress)

You can find a demo over here
And the corresponding githug repository