User Manual

ARTURIA – BRASS 2 – USER’S MANUAL
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instrument and spreads through the length of the instrument. The frequency of this
oscillation (and thus the pitch of the note produced) is proportional to the length of the
acoustic wave in the instrument.
We see right away that one simple way to produce a change in pitch will be to modify the
length of the resonator. However, being that this procedure will be practical neither for
the instrument maker nor for the instrumentalist, we use holes perforated on the wall of
the resonator to produce these changes in length. Roughly speaking, by opening a hole
on the saxophone we shorten the air stream vibration length up to the point of the hole.