I support the theory that the game could control sound chip/ channel volumes. JFYI, when I was seeking out the good volume balance for GX400 and Bubble System games for M1 lists, I found they are vastly different for each game.Īnd as long as I saw the manuals, Bubble System doesn't have any potentiometer for chip output. That's why we introduced this rule.ġ) Sound volumes in gradius games are out of proportion.Ģ) If we adjust them based on the game play, the loading music is not reproduced properly, vice versa.ģ) Some sort of effects and/or filtering is added to the original sound.Ĥ) Bubble System and GX400 could control hardware sound chip volume by program? Or MAME is missing something like an internal mixer? MAME doesn't emulate the port version of the game, should always based on the original. It could (must) not have emulated chips and run the original programs on it. I suspect the PlayStation port is just a "simulation" and mimic of the original. I'm not on my computer where I keep MAMEUI, but once I get there, I'll record Gradius playing in MAMEUI v0.128. Also, the Laser and Double sounds ALWAYS come out too silent, no matter what version of MAME I use), but the sound on any and all arcade boards that use PSG-based sound chips comes out VERY echoey, with Gradius and Nemesis being affected(the AY1 and AY2 chips are echoey(not at all like the videos posted), but the Konami K005289 and the VLM chip sound normal). Now, I have kept some old versions of MAMEUI down to v0.128, and I remember that those builds actually had the sound balance between the different sound effects and the Bubble System's Warming Up Now screen AY1 sound being much better(but the volume balance between the sounds and music is WAY off, with the music being too loud. The sound fix would apply to both the Bubble System original and the Nemesis ROM chip re-release on the GX400. I knew beforehand that Nemesis is what's emulated, and I'm assuming that the Bubble System Gradius original was made to function as if it were on a GX400 board rather than the Bubble System. I only included the Bubble System countdown as proof that the videos I linked when I initially reported the sound flaws were actually from a real Gradius Bubble System cabinet(it wouldn't make a difference in the sound if the Nemesis ROM chip re-release was recorded). Now while I know that ports don't necessarily replicate everything 100%, the PlayStation port is almost a direct emulation of the Bubble System board, but then again, there may always be a flaw in anything emulated. I saw that the Bubble System loading issue is concluded, but my issue is with the sound itself.
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