03349: mpatrol, mpatrolw: Wimpy explosion sound

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03349	Sound	Minor	Always	Jul 25, 2009, 00:54	Aug 1, 2009, 18:40

Tester	inkeye	View Status	Public	Platform	MAME (Official Binary)
Assigned To	couriersud	Resolution	Fixed	OS	Windows XP/Vista/7 32-bit
Status [?]	Resolved			Driver
Version	0.133	Fixed in Version	0.133u1	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03349: mpatrol, mpatrolw: Wimpy explosion sound
Description	When the moon-rover encounters something you can shoot (like a boulder or tank), the object normally has a deep earth-shaking explosive sound. Current version sounds as if the equalizer's bass is set way down. Compare with original PCB, or also older MAME version .112 has correct sound. All other sounds seem correct.
Steps To Reproduce	To ensure no external switches or config files were in play, I created a new empty folder with mame.exe, a roms folder, and mpatrol and mpatrolw roms inside, and ran it (no samples). Did same for v .112 and noted difference.
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	mpatrol, mpatrolw

Attached Files	moonpatrol_pcb_soundrecording.wav (9,239,596 bytes) Jul 25, 2009, 19:57

No.04685 Tafoid Administrator Jul 25, 2009, 01:14	If you are disputing sound emulation, you need to have some actual proof. A PCB recording directly from the board or in a cabinet would help, just like you provided with your phoenix report - that clearly shows a different behavior. There was discrete mixing added for the sound board Moon Patrol uses (0.124u5), taken from schematics - so the current output should be more in line to the actual machine. This implementation would account for the audible difference with your 0.112 test.
No.04690 inkeye Tester Jul 25, 2009, 14:15 edited on: May 31, 2012, 05:23	OK. I had a hard time finding one, but I think I found it: Specifically, look at 2:48, 2:51, 2:54, 3:03, 3:08, 3:12, 3:14, 3:20... When either you shoot a rock or the UFO's shoot the ground, it's much much deeper and louder, like v.112 is.
No.04691 Canim Senior Tester Jul 25, 2009, 15:04	Put the slider for discrete filtermix up and it sounds more accurat.
No.04694 inkeye Tester Jul 25, 2009, 16:32	That doesn't make any sense; discrete filtermix seems to only change the overall volume equally; not just one sample or any attribute of it.
No.04696 Fujix Administrator Jul 25, 2009, 17:23	Confirmed the boom sound. A good video btw :)
No.04699 Stefan Lindberg Senior Tester Jul 25, 2009, 19:58	I have added a soundrecording from my PCB.