Sound doesn't seem to affect mine, so I think perhaps there could be many reasons for the vibration, different things affecting that one muscle to spasm.
This link:
http://hearinglosshelp.com/blog/do-i-have-tonic-tensor-tympani-syndrome-ttts/
Suggests a lot has to do with H and anxiety based activation of this muscle.
For me, it's 24/7 and it does not get worse with noise. It gets less intense late at night. Sometimes in the past, riding in car and coming up and turning car off I would hear it, so I'm assuming the vibration triggered it. But I've had this very off and on, never lasting more than 5-20 minutes in the past.
What I don't get, is how sticking these decibulz earplugs in for the first time and molding it to my outer ear has started it back up. It raged like crazy once I pulled the plug back out. And has been going ever since. Unless the day prior where I was a complete mess from losing my gran dad contributed. It's also seems to be making my jaw below my earlobe sore too now in addition to a soreness in the middle ear.
Doesn't make sense how this never was a long term problem, and suddenly became one. I experimented last night by rolling a foam plug and inserting into my ear. To my shock, after I pulled it out after a minute the intensity had skyrocketed and it was one single vroooooooooooooooooooooooooooom low bass sound instead of just prior, a mild vroom, pause, vroom, pause, vroom type of low bass sound. This lasted for over 5 hours and I was out of my mind.
I'm completely stumped. This originally started years ago when I herd a loud pop (which came from the ear) that awoke me, and my ear was vibrating like crazy. I never thought much of it as I recovered and only had it off and on throughout the years for minutes. But with a 24/7 for 2 weeks, I'm close to collapsing over this.