I have tinnitus as well. I get more of it if my jaw gets tight including new tones and increased volume. I got rid of my jaw tightness using "The Quieting Reflex" by Charles Stroebel which is a book you can find in libraries or used on Amazon (it's out of print). That made a really big improvement for my jaw and tinnitus issues, but not so much for my TOS/scalene issues. Still, it was a welcome relief!

Good luck.