SONAR. And more. I've been reading just a bit as this goes past, so am not 100% sure if you mean 'audiotools' as a package or 'audio tools' as a topic. If it's the former, then maybe not so much. If you allow a few "indirect" benefits (really they're not), "audio tools" and military research are hugely connected. When you're talking about audio as a subset of DSP, which it is, there's a lot of DSP which is directly related to the military. RADAR and Lincoln Labs at MIT gave us a lot, and the Office of Naval Research did as well. A lot of our chips and convertors are tied up with developments in Synthetic Aperture Radar. Signals and the processing of them have been intertwined with the military since the mid to late 1800's. Drawing lines is a question of defining distinctions. (I've pretty much given up!) Just Sunday morning rambling... Cheers, Phil Mendelsohn -- Dept. of Mathematics, 342 Machray Hall U. of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2 Office: 446 Machray Hall, 204-474-6470 http://www.rephil.org/ phil at rephil dot org