Bell
The bell is a very important part of the trumpet. The size
of the bell, how sharply it is flared, and the diameter and
taper of the bell throat influence tone, intonation, and
response. Scientifically, the bell brings the
frequencies closer together in order to play a constant
pitch. The bell raises the frequencies of the standing waves
and the frequencies of the low pitched resonances. The
longer waves, deeper notes, are not able to follow the
entire flare of the bell thus reflect earlier than shorter
waves. By shortening the length of the instrument for
the long waves, their frequency is increase while the
shorter waves are left unaltered but can still travel the
length of the bell.
