07957: rygar and clones: Pops/crackles occurs in game music bassline

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07957	Sound	Minor	Always	Apr 28, 2021, 19:07	May 2, 2021, 08:02

Tester	Steve Coomber	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Unable to reproduce	OS
Status [?]	Closed			Driver	tecmo/tecmo.cpp
Version	0.231	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07957: rygar and clones: Pops/crackles occurs in game music bassline
Description	I have noticed this crackling noise on Rygar and AFAIK, it has always been there so there isn't a regression version. When you insert coin and start game, you can hear pops/crackling noise on the intro and it can also be heard on the game music bassline. There doesn't seem to be many YouTube videos of the real arcade cabinet so I cannot confirm that is correct behavior or not.
Steps To Reproduce	1. Load Rygar (or clone) 2. Insert coin and start game 3. Listen to intro music and game music bassline
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	rygar and clones

Attached Files

No.18768 Tafoid Administrator Apr 29, 2021, 11:36	My untrained ears are not hearing any crackling in music or baseline. Anyone else confirm?
No.18770 Steve Coomber Tester Apr 29, 2021, 12:11	During the game music bassline, you can hear a slight pop sound at every note being played. It's present on all of the youtube videos showing MAME running Rygar. It's always been there. disabling v-sync doesn't improve it either. Is the bassline sample based?
No.18771 Steve Coomber Tester Apr 29, 2021, 12:14	You can also hear crackling in the sound when you insert coin and it sounds like the insert coin noise is getting clipped somehow. It's always been like this on MAME AFAIK. Is this the same as a real Rygar PCB?
No.18773 Emuissues Tester Apr 29, 2021, 15:30	The popping is present as well in the pcb, maybe more integrated due to the filter or the noise in the recording... but it's there.
No.18782 Fujix Administrator May 2, 2021, 08:02	MAME works just like the orginal arcade. Closing.