08998: All taitosj sets: [possible] Missing filter on DAC

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08998	Sound	Trivial	Always	14 days ago	13 days ago

Tester	125scratch	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Direction Needed			Driver	taito/taitosj.cpp
Version	0.272	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08998: All taitosj sets: [possible] Missing filter on DAC
Description	From the PCB footage of Taito SJ games I found, it seems like they use a stronger low-pass filter for sounds played with the 8-bit R-2R DAC, most noticable when inserting a coin in any game, on the avalanche stage in Jungle King, and the car scene at the end of a stage in Elevator Action. Sources: Edit: More PCB footage of SJ games: You can really hear a difference in Wild Western's train whistle. Also: the Arcade Archive releases of SJ games include the filter.
Steps To Reproduce	Coin up a game with sound on, reach any part of a Taito SJ game with DAC sounds
Additional Information
Github Commit

Flags	Possible
Regression Version
Affected Sets / Systems	All taitosj sets

Attached Files

No.22559 Fujix Administrator 13 days ago	There is a "Possible" flag.
No.22562 125scratch Tester 13 days ago	Thank you for letting me know.