Oh yeah! That's right! We released some speech stuff a few days ago. Please beat on it, etc. I'm mostly working on higher-level things at the moment (i.e. actual applications that use these modules) so these should be stable for a while.
In other news, Sphinx2 0.3 was put out with little fanfare. So you don't actually need to use the CVS version to compile Speech::Recognizer::SPX. Which reminds me, I should probably update the README.
I've already been asked if this stuff works on Windows, I wonder when someone will ask if it will be rewritten in Python...
I'm playing at rewriting the silence filtering library. Handling all the audio buffering and framing safely and efficiently is unfortunately trickier than it looks. Pointer arithmetic is HARD, let's go SHOPPING!