Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06979 Sound Minor Always May 23, 2018, 06:14 May 26, 2018, 04:28
Tester Planestate View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10 (64-bit)
Status [?] Confirmed Driver
Version 0.197 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 06979: splatter, galaga88, etc.: Huge audio crackle upon start
Description If you are using port audio, it will also make sound playing other than MAME crackle (e.g. music you are listening to going haywire while the crackle lasts).

Using "auto" instead of "portaudio" still has crackle issue, but not as much.

If you load any saved states, this does not happen.

Not sure when this started happening.
Steps To Reproduce
Additional Information
Github Commit
Regression Version
Affected Sets / Systems splatter, galaga88, etc.
Attached Files
related to 06891Acknowledged  darkseal: There's audio stuttering ("pops") in some tracks. 
related to 06931Acknowledged Possible sound engine issues with some drivers and machines 
User avatar
May 24, 2018, 00:06
I don't believe this report is a valid one as results with PortAudio basically boil down to what hardware you're using.
What are you using as far as pa_api, pa_device, and pa_latency goes? A verbose output would be useful.
User avatar
May 24, 2018, 14:20
sound portaudio
audio_latency 1

pa_api "Windows WDM-KS"
pa_device default
pa_latency 0.003334
I've tried using pa_latency 0.00001, and/or "Windows WASAPI", but none of them work output the sound right (on any machines) on my setup.

The crackle is still audible if default sound system is used, just not as bad as when portaudio is used.
I tried it on a different rig, and audio crackle is still present at launch.
User avatar
May 25, 2018, 03:32
edited on: May 25, 2018, 03:33
I can hear this "pops" or "cracks" sound without portaudio, portaudio just make it worse.

Mame is having some issues with sound engine for the past 10 years or so, the issue is related with the FM sound engine, specific to Yamaha sound chips that I've noticed like YM2203, YM2151, YM3812, etc.
It doesn't sound like this will be fixed soon.