03876: All sets in mappy.c: Audio hiccups

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03876	Sound	Minor	Always	Jun 8, 2010, 19:07	Jun 9, 2010, 07:14

Tester	wuzzle	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Invalid report	OS	Windows Vista/7 (64-bit)
Status [?]	Closed			Driver	namco/mappy.cpp
Version	0.138u1	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03876: All sets in mappy.c: Audio hiccups
Description	Music (not effects) of more than 5 seconds have a consistent slight hiccup in audio stream every time a song is triggered at the 5 to 6 second mark.
Steps To Reproduce	Play a game, or enter Service mode in any set and play music sounds with more than 30 second length.
Additional Information	Have attempted several machines, several kinds of internal/external audio cards to rule out system specific/driver related issues.
Github Commit

Flags
Regression Version
Affected Sets / Systems	All sets in mappy.c

Attached Files

No.06238 Haze Senior Tester Jun 8, 2010, 19:09	this can happen if the refresh rate of the monitor isn't a perfect match for the one expected by the game.
No.06239 Tafoid Administrator Jun 8, 2010, 20:16 edited on: Jun 8, 2010, 20:17	I'm inclined to agree this is an issue with your monitor unable to match the games expected refresh. In short, it isn't an audio problem, it's a video problem where it's trying to stuff the games' 60.606061 refresh rate into your monitor which is likely only 60 (or slightly less)....there will be stutters. Use -refreshspeed to throttle the emulation down to match what your monitor can handle or increase your monitors refresh rate to above what the game expects.
No.06240 Fujix Administrator Jun 9, 2010, 07:13 edited on: Jun 9, 2010, 07:14	Just disable -syncrefresh to fix your problem. Closing.