@RpiBeginner Thank you. English isn't my native language and I wasn't sure if you meant "[A while ago] I tested it with my pc [and there was no hiss], and [now on the Raspberry Pi] the hiss is still there". :)

So it may very well be that the usb card is faulty or just not very good.

I had the same problem. The navigation sound work but with delay, i press bottom and the sound play 2 seconds later. The video screen saver is not heard. The volume control although it changes it stays at zero. But the sound in the games is good.
I have tried all the options of "Audio Card" "Audio Device", but the only one I hear something is heard with a lot of lag.
This happened to me after I had updated the Emulation Station. Before updating it worked fine.

Is there any way to fix it?

@swimdad84 it looks like it. You can also plug your phone into that dongle too to test it I suppose or just plug the pi into it.

@ucald4amarine one thing to add. All the sounds on the screensaver worked fine up to I told the arcade to do a random splash screen on startup.

One solution to noise and ground loops is to use an isolated sound card for the Pi.

If the sound card is magnetically isolated, then noise and hum (ground loops) from the Pi can't get to the acoustic pathway.

Matt

Thanks for helping out mate, appreciated!
Will have a go with this in a few days and let you know.
Cheers.

@Ashrill just be aware save states will not function when using omx as the audio plugin. Also the default volume is insanely loud and can't be adjusted as far as I know.

@mitu Thanks! Hopefully maybe one day they implement something

Hi evryone and thanks for all the hard work,
I had the audio bug too (sound was really garbled) until I (apt) install libsdl2-ttf-dev and modify my
RetroPie-Setup/scriptmodules/emulators/amiberry.sh to go with SDL2
and update from source.

Solved:
The reason was because somehow "Warp Mode" under Speed settings got activated.
After disabling it, the sound came back.

Try adding the following parameters in the /boot/config.txt file

disable_audio_dither=1 audio_pwm_mode=2

then reboot and see if it makes a difference.

Ok I've tested jslisten but only accept 4 button pressed at once and seems no button sequence working...

please ignore/delete this thread (sorry) it seems I've worked it all out using SGM-V2.01.sf2 and i'm cool with that. Apologies for wasting anyones time.

@grant2258 Yes, I just wanted to report that after some testing yesterday. You were faster than me. ;) I can confirm that most of my samples work in mame2003 binary and mame2003-plus, but not in mame2003 from source; with few exceptions like Blockade that works in all of them.

Since there already is a pull request for this, I consider this topic as solved. Thanks for the help! (edit: as well as @markwkidd for the fix and @Headrush69 for testing.)