Klarinet Archive - Posting 000565.txt from 2000/10

From: Bilwright@-----.net (William Wright)
Subj: [kl] A vs. Bb -- spectral graph
Date: Wed, 11 Oct 2000 11:51:41 -0400

A few days ago, I promised to search through Benade's larger book
(Fundamentals of Musical Acoustics) for the graph which demonstrates --
assuming equal embouchures and wind pressures and so forth -- that A and
Bb clarinets produce different tone colors for the same note.

The graph is figure 22.9 in section 22.5 of Chapter 22, "The
Woodwinds: II". This graph shows cutoff frequencies, which Benade
proposes as the most meaningful numerical index of tone color, rather
than showing a full graph of the partials. Thus my memory wasn't
perfect in every detail, but the graph shows clearly (IMO and in
Benade's opinion also) that the overtone ratios and hence the tone color
of the same note are different between A and Bb clarinets when all other
conditions are equal.

Cheers,
Bill

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