08553: onna34ro: Missing low-pass filter on sound effects

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08553	Sound	Trivial	Always	Jan 25, 2023, 23:02	Apr 12, 2023, 23:14

Tester	TremiRodomi	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Acknowledged			Driver	taito/flstory.cpp
Version	0.251	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08553: onna34ro: Missing low-pass filter on sound effects
Description	PCB footage (included below) indicates that it has low-pass filters on the AY sound effects. It's most evident when the player character or enemy gets thrown into a wall, where it's very bassy and loud on the real PCB unlike in MAME. Also affects other games in this driver to a smaller degree.
Steps To Reproduce
Additional Information
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	onna34ro

Attached Files

No.21311 TremiRodomi Tester Apr 12, 2023, 23:10	Issue is partly solved thanks to some upcoming changes to the MSM5232 driver (see also issue 04567), which will fix the note decay issue. Now all that needs to be accounted for is the analog low pass filter of sorts on the sound effects, and improvements to the TA7630 filter (that's mentioned in the driver).