No sound using Portaudio in Big Box - incompatibility?

[Galaxian]

I’m using Windows WDM-KS with a latency of 0.003 and it works fine in Launchbox but not in Bigbox where there is no sound. It seems the game videos get exclusive access to my Xonar SE sound card which is not released when Mame is launched. I’ve unchecked exclusive mode in the advanced settings of the sound card to no avail.

Changing the Portaudio to Wasapi fixes it but then I get scratchy sound using 0.003334 (presumably my pc is not powerful enough).

Any ideas? It seems BB is incompatible. Is there a s script to fix this?

EDIT: after a bit of trial and error I’ve increased the latency to 0.006 and the scratchiness is gone. Is this still worth doing over using direct sound?  Are there any other suggestions?

Thanks.

 

 

Edited July 17, 2022 by Galaxian

[Galaxian]

Anyone? I've seen a couple of unresolved posts about this issue.

Windows WDM-KS needs exclusive access to the sound card, but BB apparently doesn't release the videos before launching the game. It's weird that Wasapi works even where it has exclusive access to the sound card.

Is this a BB issue?

 

Edited July 19, 2022 by Galaxian

[cybermat]

Sorry for necroposting, but i have the same issue since i use groovymame with Windows WDM-KS. With WASAPI is working fine. I can take logs for you or test a possible fix if can help.

Thanks