Vortex, air pressure, flow rate... These physical characteristics directly impact each other in any tone hole. The ideal shape of a tone hole significantly enhances intonation, sound and playing feel. An asymmetrical tone hole optimizes the air flow, reduces various air pressure zones and promotes a homogeneous, stable and free air flow. Differences in intonation and tone between forte and piano can be balanced much more easily with this asymmetrical tone hole.

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