Last night, prior to the start of class, we had an optional tour of an audio laboratory & archive located in a small building on campus that I'd never even noticed existed. It's not a field that I have any particular interest in, but I figured it would still be a worthwhile experience.
The tour itself was only 45 minutes and we ended up only making it into two rooms. We, unfortunately, did not get into the archives themselves before running out of time. The sound room had tons of elaborate equipment and Escher-esque walls. The sound engineer demonstrated how audio quality can be improved on old albums and celluloid or wax cylinders.
The best part of the tour was getting to hear a cylinder played on a gramophone (you know, the thing with the big flower-like speaker). That was very cool.