bloke wrote:It's probably both, Tim, but (realize that) the tuba mouthpiece stuck in the tuba offers far more resistance than not stuck in a tuba, so the throat size is only a portion of the equation.
I haven't tried that but I believe you.
It doesn't seem that way to me on trombone, but then the trombone mouthpiece is much smaller and may have a higher percentage of the total resistance.
One thing, I'm being very specific in talking about resistance to moving a volume of air. There is also impedance to the sound wave, and i suspect that gets confused.
Back on topic, I personally don't do any mouthpiece buzzing but I do a fair amount of free buzzing and "walking in."