Perhaps more involved than you'd like, but you can get a "beer can cutter" which will allow you to eliminate the noise by removing the entire lid. Basically a fancy can opener.
You can also top a regular soda or beer can with one of those folding P-38 or P-51 style ration can openers. Jury's out on whether or not you'll get sprayed in the face when you first piece the can, though.