Get Raw Complete Waveform Data about dancer.js HOT 2 CLOSED

I tried this at some point. The Web Audio API doesn't process audio data all at once, its only in real-time while the song is playing.

I've also searched and come across one possible workaround using some sort of image processing function after get the song as an ArrayBuffer from an AJAX call or the like. I don't remember the exact function calls, but I know it didn't work, otherwise I would've documented lol.

I've also tried pushing the limit of the "real-time" processing. Changing the playbackRate of any audio source will speed up the Web Audio API's processing of audio data. IDK if this means theres less precision in the data, but either way you can get it back multitudes faster. However, though I didn't see any documented limit, it seems that the browser vendors don't implement a large enough playbackRate to decode a 2:00 minute song in less than 30 seconds or so. No where near worth it.

As far as I know, there is no known way to decode all at once in the browser, without having a server help decode at some point.

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Hey, thanks so much for the response on this. That playbackRate trick is super interesting :) Looks like I'll just stick with the server for now. Take care!

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