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MAMEUI FX sound fix to MAME
#296800 - 09/29/12 07:54 PM
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Recently someone wrote that MAMEUIFX is able to run 5* hz games at 60hz (I suppose that with the -nothrottle -syncrefresh options), not only totally smooth, but also fixing the sound problems that come with the frequency adjustment. Would it be possible to apply this sound fix to a standard source of MAME (not MAMEUI), since I'm compiling and using my own build for use with a MAME frontend. What file/s do I have to modify and how? Thanx.
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Re: MAMEUI FX sound fix to MAME
[Re: Elapido]
#296802 - 09/29/12 08:26 PM
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CabMAME has a patch that adds "soundsync" that might help you.
You can download all the patches and apply just the one you want...
http://community.arcadeinfo.de/showthread.php?9555-ENGLISH-Overview
Quote:
SoundSync
With newer MAME versions there can be problems with stuttering sound if you use vsync or tripplebuffer. Thats because of the emulation gets slowed down and there aren't enough sound samples generated.
SoundSync changes the playback rate of the soundbuffer based on the emulations speed.
If Pac-Man runs with a speed of 98%, the soundbuffer playback gets slowed down to 98% also eliminating the stuttering. However note that the sound also gets a little pitched and slowed down, although most people won't hear this at all. This also works with games that run too fast (NeoGeo for example).
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Stiletto |
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Re: MAMEUI FX sound fix to MAME
[Re: krick]
#296803 - 09/29/12 08:30 PM
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Also, it would be silly but you can probably use MAMEUIFX with a different frontend. If MAMEUI can be used from the command line, then MAMEUIFX probably can as well. 
- Stiletto
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Re: MAMEUI FX sound fix to MAME
[Re: krick]
#296835 - 09/30/12 12:19 PM
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I've applied the soundsync diff from Cabmame 146 and I get these errors when compiling my build:
Code:
Compiling src/osd/windows/sound.c...
src/osd/windows/sound.c: In member function 'virtual void windows_osd_interface:
:update_audio_stream(const INT16*, int)':
src/osd/windows/sound.c:207: error: 'class running_machine' has no member named
'speed_percent'
src/osd/windows/sound.c:209: error: 'class running_machine' has no member named
'speed_percent'
make: *** [obj/windows/osd/windows/sound.o] Error 1
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Re: MAMEUI FX sound fix to MAME
[Re: Elapido]
#296836 - 09/30/12 01:32 PM
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Download Cabmame 0.141 it works really well and the Soundsync is excellent. Soundsync is not working correctly in 0.146. See the thread below
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| AeroCityMayor |
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Entity formerly known as alien_mame
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Reged: 11/11/03
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Posts: 2438
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Re: MAMEUI FX sound fix to MAME
[Re: Stiletto]
#296863 - 09/30/12 10:55 PM
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> Also, it would be silly but you can probably use MAMEUIFX with a different frontend.
> If MAMEUI can be used from the command line, then MAMEUIFX probably can as well.
>
> - Stiletto
Very silly indeed!
I have that setup in my MAME cab 
Cheers,
Ralph.
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Re: MAMEUI FX sound fix to MAME
[Re: Elapido]
#296872 - 10/01/12 05:19 AM
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Hmmm. It seems that there were core changes in MAME that broke the soundsync patch in 0.145 and later.
Current versions of GroovyMAME implement soundsync a different way at a lower level so that it's OS independent. The CabMAME patch was windows-only.
If you're using an arcade monitor, you should check out GroovyMAME and see if it does what you need.
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