The web seems not work as supposed

I find the web dose not work as supposed.It the project in progress now. I am very interested in that. where could I find material to learn the implemation of phonopaper

Hello @imphoney. Unfortunately, we haven't been maintaining this too much.

It works very simply, by analysing the video and finding dark pixels (https://github.com/zz85/phonopaper.js/blob/gh-pages/index.js#L66) and using their locations to tune a make a add a bunch of sine waves https://github.com/zz85/phonopaper.js/blob/gh-pages/lib/synthesizer.js#L41 and output through Webaudio.

I'm sure it can be improved vastly. If there are specific things you'd want to do, let us know we can see how we can chip in.