Guys, any news about this topic? I'm seriously thinking about writing python script for this purpose... there is easy project for maemo - giving you high level manipulation interface for multimedia. So, theoretically, you can monitor sound level from N800/N810 microphone and log it somewhere, or trigger alarm in a time window, like HappyWakeUp does.

But even thought maemo's easy package is under GPL 2.1 license, I couldn't find any source codes of it. And it gives you API for writing sound to disk, not to analyze it at the same time... May be there are other programs, packages that can do that?