Generating an mp3/wav/ogg Waveform using Java

Question

Like soundcloud and zippyshare¹, how can I generate an audio waveform image using java? are there any frameworks or open source libraries available for such case?

I wanted to generate an audio waveform as an image, and upon loading a track, the waveform image with will be loaded.

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Answer 1

Start with this answer. The "further processing.." in this case might be to add each instantaneous value to a GeneralPath, then (scale that path to fit within the painting area and) draw it.