What do you mean by NLE?
I actually just rechecked some stuff I was editing, and it turns out that it sounds like beeping sounds sometimes, and in other clips it’s more of a vibrating noise, very short, almost like a problem with the mic. But, the thing is, I’ve had this problem using different mics and different 100Bs.
I think the sounds were somehow recorded into the tapes, because in Final Cut Pro you can hear them when you play a clip. Then, when I make DVDs, they are burned right into them as well.