Houdini (mainly used on linux) can actually do 3D spatial audio recording with real microphones / speakers in the scene, but it's features to get audio out of the program are lacking ... the .wav export's in 8-bit.
Houdini's native binary channel format (bchan) works perfectly to import and export sound, with 32-bit import and export.
So, to get my 3D audio out of Houdini I've been converting the .bchan files using adobe audition's raw input and exporting to .wav but now I'm switching to linux and would love to not have to go back to win-crap every time I want to convert the audio file.
Also, Audio import in Houdini is limited to 44100 16-bit, so here again .bchan would be great if Ardour could export a 44100 32-bit .bchan.
I believe it's probably the exact same bit's of data as a 32-bit floating point .wav file with a different header info, since importing as raw data in audition works fine with the default settings.