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S2 Simon Wai: Alt. dump or glitch?

Discussion in 'General Sonic Discussion' started by FireRat, Jun 1, 2019.

  1. FireRat

    FireRat

    Nah. Fuck it. Banned
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    Mobius Evolution 2
    Hello everyone.
    And I noticed something intriguing about Casino Night song from Sonic 2's "Simon Wai" prototype.
    While I was looking into the sonic retro wiki, i found this page with sonic 2 beta music:
    http://info.sonicretro.org/S2Beta:Music
    I wanted to analyze each channel... But I noticed that Casino Night has a one note difference from the downloadable ROM, in the bass sequence after the loop

    Here's the Casino Night song from Sonic 2 Simon Wai:

    https://www.dropbox.com/s/waq8ak6et18si9a/S2Beta%20Casino%20Night.mp3?dl=1

    And to compare, here's a mp3 rip from the vgm:

    https://www.dropbox.com/s/8z3butulg788bnb/S2Beta%20Casino%20Night%20VGM.mp3?dl=1

    If you pay attention, after it loops, just before the lead starts again, there's a D3 G1 sequence in the VGM, but on the ROM, it does a D2 G1.
    Could it be a bug from the rip? or rather a dump in a weird state or something? Like (although I don't fully agree), it is believed by some that the SEGA screen is skipped because pirates hacked the ROM or something...
     
  2. ICEknight

    ICEknight

    Researcher Researcher
    I believe that VGMs are trimmed and looped by hand, and thus shouldn't be used for research.

    I'm kind of surprised that nobody has attempted to make a plugin for the true music rips, so that Mega Drive and SMS/GG VGMs can be put to rest once and for all.
     
  3. Black Squirrel

    Black Squirrel

    no reverse gear Wiki Sysop
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    For the wiki?

    You know how difficult it is just to get people to edit pages right?
     
  4. ICEknight

    ICEknight

    Researcher Researcher
    What do you mean? The wiki would just have a different link to the real ROM rips instead of the VGMs.
     
  5. Chibisteven

    Chibisteven

    Member
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    That would be a lot better. I know one exists for the GEMS type drivers but nobody has ever tried to make one for the SMPS type drivers and that is pathetic.
     
  6. FireRat

    FireRat

    Nah. Fuck it. Banned
    48
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    Mobius Evolution 2
    So, there's high chances it's a mistake from manual editing?
     
  7. ICEknight

    ICEknight

    Researcher Researcher
    If that doesn't happen when running the actual ROM in an emulator, yeah.
     
  8. Black Squirrel

    Black Squirrel

    no reverse gear Wiki Sysop
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    That's not the same as a plugin. That's just swapping a zip.

    You could do that right now.



    Playback through the wiki itself, which would be 43294032 times more useful, would require someone who can write a Mediawiki extension. Someone who is also really knowledgeable in how the Mega Drive (and other systems?) handle audio. I'm not confident there's much overlap betwen the two.
     
  9. ValleyBell

    ValleyBell

    Tech Member
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    I can confirm that the VGM is trimmed incorrectly. The "loop start" point is 2 samples too late and so it misses the command that sets the octave properly.
     
  10. Antheraea

    Antheraea

    Bug Hunter Member
    I'd like to kindly mention that yall removed the pages with music downloads at least a few years ago too, so it seems like no one would have any place to put them :eng101:
     
  11. Clownacy

    Clownacy

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    I'm no web developer, but I imagine some of the work can be skipped by compiling parts of SMPSPlay with Emscripten. Then you don't have to worry about the SMPS/console emulation, and can just move onto writing the plugin itself.
     
  12. Black Squirrel

    Black Squirrel

    no reverse gear Wiki Sysop
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    This was a combination of "MP3s are a really bad idea", "the player is broken" and "the whole page kinda sucks".


    But I'm all for someone writing a nice, clean, versitile music player for Mediawiki, along with a set of tracks that are just a few kilobytes each. But you'll have to pardon my scepticism - it's a really, really big ask.