I bet you could make a Mysterious Hum detector that worked by having a camera and microphone installed in the theater that compared what it was seeing and heari

I bet you could make a Mysterious Hum detector that worked by having a camera and microphone installed in the theater that compared what it was seeing and hearing to what it was supposed to be seeing and hearing. But I agree with you that it would be relatively pointless - any resolution to a problem like that probably needs physical intervention to resolve. And anyways that theater was full of mysterious Hum detectors. The article was written by one!