I don't mind the high pitch noise, my ears are already damaged so that I can barely hear them. Last year during marching band rehearsals, we had the metronome turned up because people needed some help with marching in beat. My part brought me right in front the speaker/amplifier multiple times through out the marching season. One of those times it was so bad that I was getting dizzy and made me cry because it was so loud and painful. I sat out for a few minutes until I was ready to get back to practicing. There was also another part that brought me right up to the sidelines where the speaker/amplifier was, it made me dizzy in practice. So in every performance, I always got that part wrong because I was never able to practice it correctly.