[ scummvm-Bugs-1816901 ] MT-32 emu: Low volume

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Bugs item #1816901, was opened at 2007-10-20 03:07
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Category: iMuse/Music
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Tim (tipabu)
Assigned to: Nobody/Anonymous (nobody)
Summary: MT-32 emu: Low volume

Initial Comment:
Compared to other music drivers, the MT-32 driver is rather quiet.  This is easily observed by selecting the MT-32 music driver and listening to the opening sequence of Monkey Island 2.  The Adlib driver provides a good reference volume.

This has been observed previously:

http://forums.scummvm.org/viewtopic.php?t=150

http://forums.scummvm.org/viewtopic.php?t=3764

I believe this is caused by the use of a signed master volume level within the MT-32 code.  I've made a patch correcting this; it appears to work with no ill effects.  Ideally, someone more familiar with the code will review this to make sure all of the necessary changes have been made (and that I didn't go and muck things up).

It occurs to me that I should perhaps have submitted this to Munt instead of ScummVM; if so, sorry to have bothered you.

Tested on Monkey Island 2 with ScummVM 0.11.0svn (Oct 20 2007 01:57:22) on x86_64 Ubuntu, compiled with gcc.


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