00443: galaxian: The backround sound during gameplay is slow by about a factor of 2.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
00443	Sound	Minor	Have not tried	Jan 29, 2008, 16:16	Jun 12, 2018, 09:06

Tester	dropdeadhippie	View Status	Public	Platform
Assigned To		Resolution	Open	OS
Status [?]	Confirmed			Driver	galaxian/galaxian.cpp
Version	0.103u3	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	00443: galaxian: The backround sound during gameplay is slow by about a factor of 2.
Description	The backround sound during gameplay is slow by about a factor of 2. I have 3 original midway boards and the backround beat on those all match exactly so I'm sure it's just a problem in mame. If I run a board right next to my mame cab - the background beat in mame sounds at almost exactly 1/2 of the correct pace. The rest of the sounds and the gameplay itself all appear perfect. It's only the backround sound that isn't correct. mp3s from PCB are attached. Follow-up by Tafoid in 0.116: The earliest I could test was MAME 0.37b15 - bug still exists then.
Steps To Reproduce
Additional Information	Formerly driver galaxian.c (changed in 0.124u1)
Github Commit

Flags
Regression Version
Affected Sets / Systems	galaxian

Attached Files	60290-galaxian.mp3 (781,458 bytes) Apr 13, 2009, 15:34
	60330-galaxian2.mp3 (663,447 bytes) Apr 13, 2009, 15:35
	60379-galaxian3.mp3 (275,904 bytes) Apr 13, 2009, 15:35

No.00585 couriersud Developer Apr 5, 2008, 12:20	Somehow the mp3s mentioned got lost ... Recheck against new galaxian driver would be interesting.
No.04008 couriersud Developer Mar 19, 2009, 20:13	Can anybody with access to a galaxian pcb verify whether this report is still valid?
No.04009 Tafoid Administrator Mar 19, 2009, 20:17	I'd be curious as well. There were so many different Galaxian-types around .. hard to know what it original Namco or not.
No.04040 Tafoid Administrator Mar 23, 2009, 12:02 edited on: May 31, 2012, 05:24	Just saw a recent youtube video of the Midway version which seems to support the original report's behavior And another..
No.04202 Stiletto Developer Apr 13, 2009, 15:37 edited on: Apr 13, 2009, 15:56	Located and uploaded the old MP3s. http://web.archive.org/web/20060215173625/http://mametesters.org/knownbugsg-o.html Direct link: http://web.archive.org/web/20060215173625/http://mametesters.org/files/galaxian0103u3gre.zip FWIW, many of the attachments from the old MAMETesters database were backed up by The Internet Archive at http://www.archive.org. If there's any more missing attachments, you can check there.
No.04211 Gyrovision Tester Apr 15, 2009, 08:28	"The rest of the sounds all appear perfect" I strongly disagree. The player's firing sound and player exploding sound in MAME are not accurate to the real pcb as evident in the videos and mp3 recordings.
No.04217 Luigi30 Tester Apr 19, 2009, 06:27 edited on: Apr 19, 2009, 06:27	Aren't the firing and explosion sounds samples?
No.04221 Gyrovision Tester Apr 19, 2009, 16:54	External samples... no. 0.36b11: Juergen Buchmueller and Tatsuyuki Satoh improved emulation of the Galaxians sound subsystem. Samples are no longer used.
No.04309 Stefan Lindberg Senior Tester May 2, 2009, 21:51	I have done a recording from my Galaxian PCB (Taito version, UniWar S PCB): http://www.ym2149.com/arcade/galaxian_taito_gameplay.zip
No.04745 hap Developer Jul 31, 2009, 20:13	The speed's better if you set audio/galaxian.c NEW_LFO to 1, if others agree this will probably be enabled in the next version.
No.04746 Fortuna Tester Aug 1, 2009, 00:49	the exposion sounds are different in this game, sound with "Bafff" instead to "BAAANG" or "BOOM", moon cresta have this sounds ok
No.04757 hap Developer Aug 3, 2009, 13:08	Regarding background hum speed, this report can be set to resolved.
No.04759 Tafoid Administrator Aug 3, 2009, 13:17	It's close, I'll grant you - but the faster hum doesn't start until you shoot or a couple seconds in. What would be causing that?
No.04803 hap Developer Aug 13, 2009, 12:51	couriersud's changes in 0133u2 improved the background hum even more: the harmonics sound correct now. Tafoid's remark (above this msg) still applies though.
No.04810 couriersud Developer Aug 13, 2009, 22:22	Mike Coates was so kind to grant permission to cite him here: ---- citation ---- I've had in excess of 50 galaxian / moon cresta boards, bootlegs and originals - for quite a lot of the sound circuitry (and the video mixing and colours) they used whatever resistors / capacitors / transistors they had handy - sound varies from board to board quite considerably - even if the boards are originals from the same manufacturer. ---- citation ---- This perfectly explains the difficulties in discrete sound emulation. Even if you have high quality recordings at hand there is still uncertainty whether they fit the schematics available.
No.12062 kazblox Tester Oct 11, 2015, 01:31 edited on: Oct 11, 2015, 01:32	I have seen 2 galaxian PCB's with differing hum speeds for each... Proving couriersud's statement above.
No.12065 NekoEd Senior Tester Oct 13, 2015, 20:35	In such a case, I think MAME should emulate the audio according to the values in the schematics. We'll emulate it as ideal (as intended), rather than realistic when there's such wild variation in the realistic aspect.
No.15165 kazblox Tester Jun 12, 2018, 00:19	Midway Galaxian PCB with humming speeds closer to that specified in schematics:
No.15166 Fujix Administrator Jun 12, 2018, 09:06	Another working PCB capture.