Mouthpiece Rim Differences

[Donn]

My theory is "friction", if that's the right word - static friction more than dynamic. Mileage may vary from one person to another due to skin differences and playing style, and also from low to high volume.

[imperialbari]

With the same aperture rounder rims give a feel of a wider aperture than do more flat and edgy rims.

Sharper edges give a better definition of attack and of pitch, but may stiffen legatos.

Klaus