Klarinet Archive - Posting 000244.txt from 2001/02

From: "J&J Nassar" <jonassar@-----.net>
Subj: Re: [kl] Re: strange intonation in warm up exercise
Date: Thu, 8 Feb 2001 04:24:57 -0500

----- Original Message -----
From: <Labadorf@-----.com>
Subject: [kl] Re: strange intonation in warm up exercise

<snip>

> My thinking is that difference tones and "beats" are related. Beats are
> caused by nodes of two different sound waves aligning at a given moment.
The
> alignement of these nodes creates a surge in the amplitude (volume) at
that
> given moment.

Anti-nodes, actually. Nodes are the part of the wave where the amplitude is
equal to zero. Conversely, anti-nodes are where the amplitude is at a
maximum. Thus, it makes sense. Also, beats do not occur just at these
points, they are merely where the big beats are. Beats are essentially
surges of amplitude in a wave(including resultant waves - when two or more
waves come together to make one wave).

<snip>

> I hope my explanation is clear. By this reasoning difference tones occur
in
> the air before they get to a membrane like the ear. Do Bonade's
> explainations blow this reasoning out of the water?

I'm thinking the problem is a difference of definition. One could argue
that reality is based on our perception of it. e.g.: if we weren't around
to call the joining-of-sound-waves-at-various-points "beats," then "beats"
would never exist. They would simply be the joining-of-waves-etc.

--Jonathan

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