I thought I'd point this out over here - http://www.avsforum....tion-meter.html
I'm currently working on writing an app that uses an offboard accelerometer to measure triaxis vibration in order to try to get a better, more accurate, view on (what has been dubbed) tactile response. The thread on avs has details on the app(s) itself so I won't repeat that, happy to discuss it here for those who prefer db to avs though.
One reason I post it here though is because the analysis portion will actually do what we use speclab for today when it comes to analysing soundtracks, nowhere near the no of options that speclab has but then I don't think they're actually used anyway for the most part.
I plan to eventually add support for automated analysis (and playback) using something like a jriver playlist too. This is a nice sidebar for me because I find speclab an extremely irritating application to use. It wouldn't be hard to extend it to capturing from a mic though I doubt I'll get to that for a while (if I ever do... code is freely available of github though should anyone want to contribute!).