I am currently a high school trumpet player, and have been having difficulty developing a consistent vibrato technique. There are two techniques that I use currently:
1. Slightly moving the horn. This produces a good-sounding vibrato, but only on notes lower on the register. After going above e on the staff, moving the horn has little effect on the tone.
2. Bending the tone with my chops. This produces a good sounding vibrato on notes on the higher register, but is difficult to produce a good sound using this technique on lower notes.
Could someone possibly give me advice on different techniques that I could utilize to produce good vibrato? I would appreciate it. :)