sf: sound effects have a chance to interrupt music playback in Street Fighter

[Thelypody]

Street Fighter (US, set 1)
Running on MiSTer (Terasic DE10-Nano) via Analog IO Board.

On the current version of the jtsf core Street Fighter has an issue with audio playback. Throwing a punch or a kick has a chance of interrupting background music for a brief time, presumably caused by sound effects playing at the same time. This is observable both in normal gameplay and arcade's attract mode.

[jtmiki]

I have tested it on today's compile all on MiSTer, commit: b656448.
As Thelypody said during a punch or a kick attack, the background music is interrupted.
This did not occur in MAME.
The referee's ROUND calls are also muffled and difficult to hear.

[jotego]

This occurs because the PCM sound is too loud and clips the whole sound. @jtmiki please try to identify the commit that broke the core

[jtmiki]

I have found two commits of the same date that the core didn't work well.
I attach screen shots of these two commits. The date was on the 12/1/2025.
Commit: 94cbdd7

Commit: f3ba22e

[jtmiki]

I have found the commit that broke the core.
Since the commit 31/12/24, 0b0559b, the background music has been interrupted during attacks.