02011: superchs: ES5505 clockspeed too low

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02011	Sound	Minor	Always	Jul 15, 2008, 17:47	Oct 27, 2008, 12:29

Tester	Yonah	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Phil Bennett	Resolution	Fixed	OS	Windows XP/Vista 32-bit
Status [?]	Resolved			Driver	taito/superchs.cpp
Version	0.126	Fixed in Version	0.128u2	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	02011: superchs: ES5505 clockspeed too low
Description	The sound playback on Super Chase is off pitch. You can observe this problem from the start of the game. Nancy sounds a bit like a man, and her words get cut off. She is supposed to say: "The suspects are driving a blue convertible. How you handle the beginning is everything." But because the sound is playing back to slow, the first sentence shown gets cut off at the first syllable of convertible to become: "The suspects are driving a blue conv.... How you handle the beginning is everything." A Google search shows some other games using the same sound chip as Super Chase, the ES5505, except it's clocked higher at 15.23 Mhz instead of 13.34 Mhz. I made the following change myself and confirmed that 15.23 Mhz clock rate no longer clips speech and sounds more natural.
Steps To Reproduce
Additional Information	Suggested fix in superchs.c: line 448, Change: TAITO_F3_SOUND_SYSTEM_ES5505(13343000) to: TAITO_F3_SOUND_SYSTEM_ES5505(15238050)
Github Commit

Flags
Regression Version
Affected Sets / Systems	superchs

Attached Files

No.02942 Phil Bennett Developer Oct 27, 2008, 12:29	Adjusted.