Breath controller?

["T.W. Hartnett" <hartnett.t@apple.com>]

Not related to looping, but there's been enough discussion of various 
ways to implement real-time control of paramenters during performance 
that I thought I'd tap the collective knowledge of the group.

Has anyone heard of a breath controller than can be used to generate MIDI 
CV messages?  I remember that Allan Holdsworth used to use a breath 
controller with his SynthAxe, but I believe that was part of the SynthAxe 
package.  I'm interested in trying to find a standalone unit which I 
could plug in to any MIDI CV input.  My immediate use for this would be 
to give me a breath-controlled volume controller, to aid in simulating 
horn and string sounds.  I've used a volume pedal for a long time, but 
the physical distance the pedal has to travel prevents really quick 
attacks and releases.  I also think, that with practice, it would be 
easier to vary the volume level during a held sound than with the volume 
pedal.

Anyone know of such a device?

Travis Hartnett