[Openmsx-bugs] [ openmsx-Bugs-1157787 ] Sound in windows contains 'ticks'

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Bugs item #1157787, was opened at 2005-03-06 17:15
Message generated for change (Settings changed) made by manuelbi
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Category: Sound
Group: None
Status: Closed
>Resolution: Fixed
Priority: 6
Submitted By: Herman Oudejans (h_oudejans)
Assigned to: Wouter Vermaelen (m9710797)
Summary: Sound in windows contains 'ticks'

Initial Comment:
In some games and demo's there are some very audiable
clicks. This happens on some windows systems with a
'low' samples set. On my deskop system samples = 4096
solves it, but that gives way too much lag. On my
laptop there are no ticks with samples = 512 even.
Easiest to hear the problem is in the intro tune of La
Abadia Del Crimen (which is attached)

Main suspect is the new SDL libs that were used shortly
after releasing 0.5.0. The old libs will have to be
rebuild and tested before it's absolutely sure.



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Comment By: Herman Oudejans (h_oudejans)
Date: 2005-09-14 19:41

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The openMSX sound system went to a number of changes. 
No idea what fixed it, but it's doesn't do any 'crackle' 
anymore with 2048 samples, which is the default.

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Comment By: Patrick van Arkel (vampier)
Date: 2005-05-14 07:40

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Can someone test this with the directx sound?

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Comment By: Herman Oudejans (h_oudejans)
Date: 2005-03-10 19:04

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New insights, setting SDL_AUDIODRIVER=waveout also sets the
sample value to 8192 causing a big delay. 

So, this is not the solution. There are some nasty bugs in
the SDL  waveout driver. Not closing the sound and repoting
the wrong samples value.

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Comment By: Herman Oudejans (h_oudejans)
Date: 2005-03-09 22:16

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After recompiling I found out that it's not the SDL version.
Also it did occur in 0.5.0.

Setting SDL_AUDIODRIVER=waveout helps a lot, but the current
version of openMSX doesn't boot the msx when this variable
is set.

I have pinpointed where this freeze first occurs:

openMSX 1503 (20-11-2004 12:00) does work with waveout
openMSX 1504 (20-11-2004 20:00) doesn't compile
openMSX 1505 (20-11-2004 23:00) does NOT work with waveout


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