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Joined: May 2005
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The tunes from the Atari ST 20 year megademo has been released as SNDH but unfortunatly AO only playes a few of them like "hybrid.snd", "introv2.snd"... same problem with other SNDH players like Winjam.
click to download 20 year megademo SNDH files

works to listen to them in Steem, but i prefer to use a standalone musicplayer :-)

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This suggested bug fix probably isn't even worth mentioning, since the Project2612 vgms are quickly replacing the old gym format, but I might as well:

For certain gym sets, Audio Overload plays the songs incorrectly (i.e. notes slur together, wrong-sounding instruments, lots of dissonance), while Game Music Box plays them fine. Apparently the sets that are affected are ones that were ripped by Gens. Examples include (from zophar): Aero the Acrobat, Aladdin, Izzy's Quest For the Olympic Rings, Virtua Racing Deluxe.

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I have a sneaking suspicion that the culprit here might actually be Gens. Doesn't Game Music Box use a FM core based on that emulator?

Audio Overload uses the MAME FM core.

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Yeah. There are some claims that Gens is closer to the proper behavior of the Genesis, but given that Jarek's plugged the actual FM chips into an ISA card for detailed torture testing I find that unlikely. (Perhaps that's the difference between the 2612 and 3834 though - the former has some hardware bugs).

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Quote
Originally posted by R. Belmont:
Yeah. There are some claims that Gens is closer to the proper behavior of the Genesis, but given that Jarek's plugged the actual FM chips into an ISA card for detailed torture testing I find that unlikely. (Perhaps that's the difference between the 2612 and 3834 though - the former has some hardware bugs).
The Gens core is quite close, and is what the VGM Winamp Plugin uses, but Steve Snake's cores in Fusion kick the crap out of the Gens core.

Unfortunately, that code isn't open source, so we can't implement it unless Steve Snake releases it.

BTW; for those of you who follow Project2612, we've moved to a new server/host: Change your bookmarks to http://project2612.org . smile


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I've tried latest MAME FM core in my VGM sound engine and it plays things better, though it also has a few problems Gens doesn't have. The MAME FM maintainer is looking into some of the problems, so it should be the preferred core eventually. I'm not well-versed in FM chips so I can't do much but use whatever others have written.

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DP: thanks, I've updated my links.

blargg: Glad to hear Jarek's looking into the problems.

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Is there any possibility in the near future that the more accurate Megadrive/Genesis sound emulation will be implemented into the actual emulators like Genesis Plus and Generator?

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It's not quite as simple as that. Audio Overload is actually using the same FM chip emulation as Genesis Plus and Generator.

The VGM format (and GYM) are simply logs of the writes to this sound chip. When generated by Kega the data is far more precise than that coming from other emulators, and that is what produces the percieved improvement in sound quality.

Richard

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Ya know, the forum description's out of date. "10 different formats"? smile

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