Newsgroups: comp.os.msdos.djgpp
From: malyon AT netcom DOT com (Roland Acton)
Subject: Re: midi sound detecting in Allegro??
Message-ID: <malyonE6v9Ax.FoI@netcom.com>
Organization: Netcom On-Line Services
References: <yATjZAAJO4IzEwya AT jenkinsdavid DOT demon DOT co DOT uk> <jTh7zbAT59IzEwAm AT talula DOT demon DOT co DOT uk>
Date: Tue, 11 Mar 1997 06:42:33 GMT
Lines: 8
Sender: malyon AT netcom15 DOT netcom DOT com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Shawn Hargreaves (Shawn AT talula DOT demon DOT co DOT uk) wrote:
: Beware, though: some MIDI files use note-on messages with a volume of
: zero to turn notes off (argh! why, when there's a different note-off
: message?), so you should check for zero volumes.

  It's to try to reduce the size of the file. Using the note-off command
would involve changing the running status byte once, and then again to turn
it back on, and that adds up if the file has a lot of notes in it.