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Re: [PATCH] autochange.scm: Use averaged chord pitches to determine staf

From: David Kastrup
Subject: Re: [PATCH] autochange.scm: Use averaged chord pitches to determine staff.
Date: Wed, 22 Jul 2009 10:50:16 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux)

Mark Polesky <address@hidden> writes:

> Anyway, I think that it would make a lot more sense if the staff were
> determined by the "average" pitch of the chord.

I don't think so.  The purpose of staff changes is to avoid help lines.
In particular where they would require systems to be paced further
apart.  For this, the average is irrelevant, only the total range (top
and bottom note lines) is of interest.  A staff change is a drastic
measure: one will not typically do it unless more than two help lines
would otherwise occur.  So it is really a matter of the total vertical
extent (after considering the signature, so an f flat counts as higher
as an e sharp, never mind that its pitch is lower) and not the pitch

David Kastrup

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