Purdue has a rather unique program called Interdisciplinary Engineering (IDE) that has been around for probably close to 30 years and that is specifically for areas of study that fall between or cross the traditional divisions of Engineering. Recently that changed a
bit to where the IDE is now a BS degree program for those who want some engineering education but do not plan to practice engineering while there is a new Multidisciplinary Engineering (MDE) BSE degree program for those who do want to be Engineers. I believe that Acoustical Engineering is now part of the MDE program while Theater Engineering Studies is currently an IDE program. Both MDE and IDE are part of the School of Engineering Education which is in turn part of the College of Engineering. More info can be found at
https://engineering.purdue.edu/ENE/Academics/Undergrad.
My studies included Physics (I was actually a Physics major for my first two years) but also a heavy dose of Mechanical Engineering (our
acoustics lab was part of the School of Mechanical Engineering), music, some Electrical Engineering, technical writing and, of course,
theatre tech (thanks Rick!). Because I knew I wanted to get into the facility design and construction aspects, I also took a number of Civil and Construction Engineering courses.
For the more Liberal Arts minded, Purdue also has a BA program in
Theatre Design and Technology and MFA programs in
Theatre Engineering, Sound Design, Lighting Design, Scenic Design, Costume Design and Technical Direction. While I'm probably a little biased, I don't know of many institutions that offer such a
broad scope of
theatre and sound related degree options.