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Ruby gem waveform
https://github.com/benalavi/waveform -
Ruby gem that provides access to audio waveform data files generated by audiowaveform
https://github.com/bbcrd/audio_waveform-ruby -
A Ruby gem for reading and writing the Wave file sound format (*.wav)
https://github.com/jstrait/wavefile -
waveformjson ruby
http://rubydoc.info/gems/waveformjson/frames -
Simple yet powerful ruby ffmpeg wrapper for reading metadata and transcoding movies
https://github.com/streamio/streamio-ffmpeg -
Ruby gem waveform
https://github.com/bbcrd/audio_waveform-ruby -
Sound Manager2
http://www.schillmania.com/projects/soundmanager2/