Here’s an unusual accident.

I play Alto sax and one day i experimented by putting a pressure plate inside the bell of my sax

https://www.imuso.co.uk/itm/vandoren-optimum-pressure-plates-alto

believe it or not there is is a difference in sound coming from the alto sax, the pitch sounds a lot better.

i don’t understand the physics behind sound waves, but i do know the plate will vibrate inside the bell at the same frequency of the pitch sound wave just like how microphones vibrate when sound waves hit them.

either two things are occurring – the plate is absorbing the excess waves bouncing around inside the bell and letting a purer sound come out from the strongest sound wave or the vibrating pressure plate is steadying out the strongest sound wave.

i got a Pro sax player to check this out and with his selmer alto and he noticed an improvement as well. i haven’t got a tenor sax so i don’t know if there is a noticeable difference.

i’ve only tried it with metal pressure plates .