Klarinet Archive - Posting 000225.txt from 2000/03

From: "Ed & Carol Maurey" <edsshop@-----.ca>
Subj: Re: [kl] Clarinet Pitch...PLEASE READ THIS...
Date: Tue, 7 Mar 2000 01:24:55 -0500

You know, Walter, I think you're right with one important exception:
Especially long mouthpiece bores tend to flatten the throat tones while
simultaneously sharpening the extreme register.

Ed Maurey
----- Original Message -----
From: <GrabnerWG@-----.com>
Subject: [kl] Clarinet Pitch...PLEASE READ THIS...

> In a message dated 3/5/00 12:39:07 PM Central Standard Time,
> Middup@-----.com writes:
>
> <<
> As far as I can tell the external lengths of my old B40 and the B40 - 13
are
> the same but there is clearly an internal difference as the length of the
> window (slot) is approximately 30.5 mm on the B40 but 32 mm on the B40 -
> 13. I do not have the equipment to measure other dimensions with any
> accuracy. >>
>
> According to Benade, Lee Gibson, and my own observations, clarinet pitch
is
> determined by the total VOLUME of the bore of the mouthpiece and the
barrel.
>
> The total length of the mouthpiece is largely irrelevant.
>
> The length of the window affects the vibration of the reed, but has little
> effect on pitch.
>
> NOW....why do I say volume? Because the respective bores have different
> widths and tapers depending on the source.
>
> In every clarinet mouthpiece, the bore expands at least a mm from top to
> bottom. This plus the length of the bore determine the pitch of the
> mouthpiece. DO NOT ASSUME that these measurements are consistent.
>
> I have mouthpieces where the bore measures 53 mm, others where it measures
56
> or 57 mm. It is also VERY true that no two mouthpieces have exactly the
same
> internal amount of taper or start at exactly the same measurement.
>
> Measuring the internals of mouthpieces is a TEDIOUS activity. From exactly
> the same manufacturer the exit bore, and the top of the bore, can vary by
as
> much as .05 mm.
>
> Then add the barrel to this complexity. IT IS NOT JUST LENGTH that makes a
> difference. I have ten barrels upstairs. Not one has the same internal
taper
> (almost all barrels taper from a larger to a smaller bore. Even my old
R-13
> barrels have a slight taper. My Buffet "Moennig" has a larger taper.
>
> The total interior volume of the barrel will affect pitch, not JUST the
> length of the bore. Also, different interior SHAPES will affect tuning of
> different registers.
>
> Just some of the stuff I have learned in the past few months.
> Walter Grabner
>
> http://www.clarinetxpress.com
> Hand Crafted Clarinet Mouthpieces:
> Bb/A, Eb, Bass
> Clarinet Reed Making Kit
> "Making Clarinet Reeds By Hand"
>
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