Hi all, We have had a couple of summer students over the years considering how we might solve the audio "on air" issue. Just to recall, it would be nice to have some confidence monitoring that let students and the instructor know that the recording was happening and audio levels were ok without having to log into a full web interface/etc. The thought was that an "on air" light from radio/tv broadcast would work well, even better if it pulsed with the rhythm of the speaker, giving direct feedback that audio was being captured.
Matterhorn Spot is our take on this. It uses an Arduino board to run an LED matrix. gstreamer appsinks are used to collect audio data, which is then sent via the network to the arduino to process. It's fairly simple, and the materials to build it cost around $100, but some could be cut out now that we have a prototype. A full set of source code for this is now in contrib/spot. It's all ECL licensed so you can do pretty much whatever you want with it. We would love to hear some feedback as to whether this seems like a promising direction to go, I'm hoping we can sneak it out for testing this fall. Here's the URL to the svn repo: https://opencast.jira.com/svn/MH/contrib/spot/ And here's a video demonstrating it: https://opencast.jira.com/svn/MH/contrib/spot/overview.m4v (we still need an enclosure btw, the plywood box isn't as hot as I had hoped ;) ) Chris -- Christopher Brooks, BSc, MSc ARIES Laboratory, University of Saskatchewan Web: http://www.cs.usask.ca/~cab938 Phone: 1.306.966.1442 Mail: Advanced Research in Intelligent Educational Systems Laboratory Department of Computer Science University of Saskatchewan 176 Thorvaldson Building 110 Science Place Saskatoon, SK S7N 5C9 _______________________________________________ Matterhorn mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn To unsubscribe please email [email protected] _______________________________________________
