Fons: Mentioned recently on list: http://sourceforge.net/projects/dsptools/ (something i need to look into further). Similar capabilities might be found in AudioLab: http://www.ar.media.kyoto-u.ac.jp/members/david/softwares/audiolab/ It's based on Numpy and libsndfile. For example, I used it to run the small python script http://soundviewer.svn.sourceforge.net/viewvc/soundviewer/svt.py?view=marku… see also http://pypi.python.org/packages/source/s/scikits.audiolab http://www.ar.media.kyoto-u.ac.jp/members/david/softwares/audiolab/sphinx/i… http://nielsmayer.com/audiolab-README-NPM.txt ... On Mon, Jun 21, 2010 at 3:21 AM, Guillaume Pellerin <yomguy(a)altern.org> wrote: Guillaume -- Thanks for posting this! The demo of TimeSide at http://crem.telemeta.org/ is especially interesting. Just wanted to let you know that we might be working on similar things, undoubtedly with different platforms and perspectives... I'm using Java although it's nicely hidden beneath open-source tools like http://xwiki.org http://groovy.codehaus.org/ http://velocity.apache.org and http://code.google.com/p/simile-widgets/ and a non-opensource part predicated on Flash being available in the platform web-browser, and http://www.longtailvideo.com/players/jw-flv-player and of course hidden deep underneath http://omras2.org/SonicAnnotator and http://vamp-plugins.org/ ... I'm working to get this setup publicly (pre-alpha) on http://trainspodder.com , but for now, here's a few browser screenshots: http://nielsmayer.com/ts-episode-timeline.png http://nielsmayer.com/ts-episode-evnt-anls.png http://nielsmayer.com/xwiki/bin/view/Exhibit/NPRpods3 is a working example of some navigation/search/flashplayer-media playback aspects of above. http://nielsmayer.com/xwiki/bin/view/Timeline/NprTimeline is some much older working-prototype code. (nb: requires flashplayer, and doesn't seem to work on KDE's konqueror, unfortunately). older interface snapshots: http://nielsmayer.com/trainspodder-prototype.jpg http://nielsmayer.com/prairie-home-segmenter-silence-noisy-tonic-mode-key.p… http://nielsmayer.com/mjspecial-segmenter-silence-tonic-mode-key.png http://nielsmayer.com/mjspecial-bars-vs-tempo-in-timeplot.png http://nielsmayer.com/mjspecial-tonic-key-segmenter-in-timeplot.png (information overload fail) Niels http://nielsmayer.com