Klarinet Archive - Posting 000983.txt from 2000/02

From: Topper <leo_g@-----.com>
Subj: Re: [kl] Throwing down the glove - ligatures
Date: Sat, 26 Feb 2000 16:38:33 -0500

IMHUO a mass secured to a point on an instrument where/near sound is either
generated or greatly absorbed and or dispersed will transfer that energy
elsewhere. Any mass at said point will inhibit energy absorption and send
it back for dispersion elsewhere and otherwise cause vibrations (energy) to
seek points elsewhere where it may be absorbed and dispersed: points of
lessor mass: where it wants to go.

Air in a clarinet is similar to air through a hot pipe in the way that
moving air will carry the heat (in this case energy in the form of
transient vibrations that find their way into the primary airflow through
the surrounding material). Add more heat to the outside of a steam pipe and
the steam gets hotter.

Since the ligature is in direct contact with the mouthpiece and the reed
and is its fastening point for the primary oscillator this must be the
optimum point at which to regulate the absorption or dispersion of
transient vibrations from that point. Vibrations which travel throughout
the instrument.

The secondary vibrations caused by the reed beating against the mouthpiece
and reed vibrating into the table, are the best places to inhibit and
therefore deflect the flow of energy from dispersion into the air around
those points and back into the mouthpiece for dispersion into the rest of
the instrument into the bore.

Therefore I believe that the result of a heavy ligature would be a higher
degree of harmonics; More presence of harmonics and more volume of
harmonics in the higher frequencies, and especially those above the
threshold of the human ear. However the interrelation between the harmonics
we hear and those we do not are important to the presence as they are
supportive of one another.

Just a thought....

Cheers, Leo
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