Just noticed that if I am using the "Hold Breath" action for NSO, you will get an audio cue of holding breath and releasing breath. But it is just regular human breathing, without any modulation.
It would be pretty sweet if you could hear kind of a servo or set of servos whining, a pitch up for the initial breath and a pitch down for the release of breath. As if the bot is actually just tightening and stabilizing its core and limbs in order to stay steady.