I'm looking for the name of this kind of effect as I always end up needing it but have never been able to find something similar. It's kind of like a low-tech power up, power-on sound - associated with building pressure / airlocks but I've no idea what to search for to find it.
The best isolated version of it I can give you as an example is when Darth Vader's Mask is put on.
2:22-2:24
Thanks for any help!