don't click here

Some DAC sample rips right out of ROMs

Discussion in 'General Sega Discussion' started by Andlabs, Dec 12, 2009.

  1. Andlabs

    Andlabs

    「いっきまーす」 Wiki Sysop
    2,175
    1
    0
    Writing my own MD/Genesis sound driver :D
    Huh, thanks for that info. Determining the frequency is the only thing I don't know how to do. How would you convert these frequencies to tracker notes? Or would it be better to have the tracker resample the sample for me?

    If you want, I can post the Z80 sound driver code and you can determine which values are magic for the other samples. I can also manually rip out Comix Zone and a few other games (I still have to do Revenge of Shinobi and I'm trying Chou Yakyuu Miracle Nine (sp?)).
     
  2. Ch1pper

    Ch1pper

    Fighting the Battle of Who Could Care Less Member
    871
    116
    43
    Life.
    I don't know how I always leave out the important details. I've just been using Audacity to import games as raw data. :specialed:

    Recalling something about how the Genesis/MD uses 8-bit for DAC samples I just put 2+2 and tried 8000 hz. The few games I've tried have quite a few or all their samples around there. Though there are a few oddballs, like Virtual Bart, where most speech is at 8000hz, while a few clips are either slightly higher or lower. Other games seem to have their samples stored in an entirely different way and produce very scratchy results, which I haven't yet figured out how to properly decode.

    Just worked some more on Comix Zone. Most samples are clear and at 8000hz like usual... While tje others I mentioned previously seem to be at 5000 hz and are very scratchy. Anyone got any thoughts on that? I'll try to upload 'em somewhere in a few hours.

    Personally, I'm thinking the "resample with the tracker" route might be easier, but I know little about hardcore rom hacking, so that's just me.
     
  3. Covarr

    Covarr

    Sentient Cash Register Member
    4,233
    3
    18
    Trapped in my own thoughts.
    Two stageplays, a screenplay, and an album
    Virtual Bart would be an oddball. I think they ported this from the SNES version.
     
  4. Ch1pper

    Ch1pper

    Fighting the Battle of Who Could Care Less Member
    871
    116
    43
    Life.
    Ah. Had a feeling there was some explanation that I wasn't thinking of. That's it.
     
  5. Bareirito

    Bareirito

    Member
    102
    0
    0
    Argentina
    Sonic - Mystery of the Chaos Emeralds
    Oh, just didn't knew that, what a shame.

    By the way, nice post.
     
  6. Flygon

    Flygon

    Member
    Hi, I hijack threads with raw WAV dumps of Game Boy Color games.

    But yeah, this is my WAV dump of Cannon Fodder for Game Boy Color. Why am I posting it here? It seems like the most relevant thread, and it'd seem duplicate to make another topic. If a mod really wants to split this, be my guest

    The game runs at either 4000Hz or 5000Hz, I'm not sure (I just set it to 4000Hz), either way, every single little piece of sound in the game is PCM.
     
  7. Tiberious

    Tiberious

    Yeah, I'm furry. Got a problem? Oldbie
    Here Comes a New Challenger!

    CPS2 and even CPS3 is possible, given a bit of work.

    Here's what you need to do:

    1) Byteswap the sound ROM(s)
    1a) For CPS2, you want the .11 and .12 files
    1b) For CPS3, byteswap the 30 file.

    2) Open as raw data in the following formats:
    CPS2: 8-bit, Signed, Mono
    CPS3: 16-bit, Signed, Mono

    3) Tune as necessary.

    Here is an example of what can be done if you have a good ear for sample looping.
     
  8. amphobius

    amphobius

    not so gone, after all Member
    2,133
    17
    18
    Thrash '25
  9. Eduardo Knuckles

    Eduardo Knuckles

    Not a loved one, but the most hated person. Banned
    414
    10
    18
    Someplace somewhere
    Project S.A.M.G.
    I found them too. As nineko said, is quite easy to find them. Well, trying out to find good samples in SNES game I found in a game called 'Super Adventure Island' some samples that are just identical (or at least it seems to be) to some Streets Of Rage's ones. Ehrr... until the songs are similar too... Also, the same composer. (Oh, fuck this fact) :P
    (Listen to 'Follow Wind' and check by yourself)
     
  10. The Eighth Bit

    The Eighth Bit

    8-bit kitty! Member
    29
    0
    0
    United States
    mtBNC
  11. Andlabs

    Andlabs

    「いっきまーす」 Wiki Sysop
    2,175
    1
    0
    Writing my own MD/Genesis sound driver :D
    woo massive bump

    Samples from Mega Drive/Genesis version of Viewpoint ripped. Do the Neo Geo and x68000 versions have more samples (if they're not pure audio tracks entirely)?

    Also what's with that "If you wish to leave a record of your call" one (dac1_3)?

    Oh, and Ristar seems to play its DAC samples at either SMPS speed 3 or 6.
     
  12. Andlabs

    Andlabs

    「いっきまーす」 Wiki Sysop
    2,175
    1
    0
    Writing my own MD/Genesis sound driver :D
    Just added Moonwalker. It uses a slightly different data array used by jman2050 compression for voices, so... yeah, another jman2050 decompressor :/
     
  13. Andlabs

    Andlabs

    「いっきまーす」 Wiki Sysop
    2,175
    1
    0
    Writing my own MD/Genesis sound driver :D