06096: centiped and clones: Incorrect firing sound

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06096	Sound	Minor	Always	Dec 8, 2015, 02:47	Sep 1, 2022, 09:20

Tester	kazblox	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	atari/centiped.cpp
Version	0.168	Fixed in Version	0.247	Build	64-bit
		Fixed in Git Commit	ffc0db2	Github Pull Request #

Summary	06096: centiped and clones: Incorrect firing sound
Description	The firing sound has a different waveform than what it is on actual PCB footage. See more in Attachments and Additional Information. PCB reference footage: (30 seconds in)
Steps To Reproduce	1. Start Centipede in MAME 2. Simply press the fire button
Additional Information	POKEY rewrite. *if anyone can provide an inline PCB recording that would be great. pcbmic.wav - Real PCB recording via mic pre_0146.wav - Taken from MAME 0.144, before the POKEY rewrite. wrong.wav - Taken from MAME 0.168.
Github Commit

Flags
Regression Version	0.146
Affected Sets / Systems	centiped and clones

Attached Files	pcbmic.wav (61,882 bytes) Dec 8, 2015, 21:37 Uploaded by kazblox
	wrong.wav (59,986 bytes) Dec 8, 2015, 21:37 Uploaded by kazblox
	pre_0146.wav (53,002 bytes) Dec 8, 2015, 21:39 Uploaded by kazblox

No.12230 Tafoid Administrator Dec 8, 2015, 05:20	I have the date of changing happening just before 0.146 went to press when the new Pokey device was being made and new filters and other such things were being added. Specifically, I have a few binaries during that period (may 17-may 20 2012) and the sound completely regressed first, then was fixed, then it appeared to change as it is shown today when the new device driver was switched over from the legacy implementation on May 19, 2012. I would assume the issue is completely with the new implementation as the legacy implementation was killed off shortly thereafter.
No.20487 M.A.S.H. Senior Tester Aug 25, 2022, 21:54	The POKEY emulation have been improved: https://git.redump.net/mame/commit/?id=ffc0db2fdc8aac2258877e23fadee5265ad7a1c3 Is now the firing sound better?
No.20488 kmg Senior Tester Aug 26, 2022, 00:17	Sounds like it is close or identical to the video footage to my ears, though it’s a noisy game and the sound is hard to isolate. Anyway it is certainly much improved. Shot sound now has the lower pitched-drum-like component to it. Get close to some mushrooms and you can hear the rapid fire sounds night and day compared to previous MAME sound.