Quarter sound achievement device

摘要

For each register of the instrument, the device comprises at least one auxiliary tube branched in the vicinity of the head of the instrument and a manual control mechanism making it possible to open or close the auxiliary tube at its first end in contact with the instrument or at its second end turned towards the outside. This device more particularly applies to flute mouthpiece instruments or reed instruments, such as clarinets, saxophones, oboes and bassoons.