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Logic 9 How to convert SD2 file to .aif?

Discussion in 'Logic 9' started by afavreau, Jun 18, 2012.

  1. afavreau

    afavreau Senior member

    Is there a way to convert SDII files for Logic?

    a) in Logic?
    b) with a free app?
    c) with a paying app?

  3. georgelegeriii

    georgelegeriii Senior member

    Logic can both load and save audio as SDII files... what exactly are you trying to do?
  4. afavreau

    afavreau Senior member

    I have an old session recorded in about 2001. For some reason, one of the audio file is a SD2 file even though it was originally recorded in Logic 5 or 6. All my other audio files are .aif.

    Logic 9 says it doesn't recognize it. What can I do to make acceptable for Logic?
  5. georgelegeriii

    georgelegeriii Senior member

    It should just import fine.

    In fact, Logic can play back multiple types of files at the same time with multiple bit rates (not samples rates though). So, a 16 bit aif, can play back fine with a 24 bit wave file in the same song.

    The only thing I can think of that would be a problem is if you are running OS 10.7 and quicktime 10. I haven't tested wether that will work (due to 10.7's not allowing any old pre intel code to work). Do you have a friend with 10.6 and Logic to try and convert it for you?
  6. Colin Shapiro

    Colin Shapiro Senior member

    I just checked re what George said above.
    I'm running Logic 9.1.7 with OS 10.7.4
    I dragged an old .sd2 file into Logic's Arrange window and it works perfectly, as is, no conversion required.
  7. sonnykeyes

    sonnykeyes Senior member

    I find old sessions bring all kinds of headaches with them. It's possible the file is corrupted in some other fashion, but Logic doesn't have an appropriate warning dialogue to describe it, so it's complaining that it's an SD2 file for want of a better way of describing it. Does the file play in any other software? If so, try converting it to an .aif file using some other software and see if Logic can load it then.
  8. afavreau

    afavreau Senior member

    Yes, I do have the last version of Logic, Quicktime and Mac OS X.

    So I tried in various software like, Melodyne Cre8, Ableton Live Demo, Real Player, Logic 7, Quicktime, iTunes and Soundtrack Pro. The answers I get is that the file could not be open and that it is either locked or damage.

    I also brought it to my old PowerBook G4 with Logic 7 and it still doesn't open. The most interesting answer I got is from Quicktime on that system which says that the "resource map" is incorrect.

    Any ideas on what I should do?

  9. sonnykeyes

    sonnykeyes Senior member

    I read somewhere that Soundhack has an Import function that can dig the raw audio out of a messed up file and export it as an AIFF. No idea if that's true, but it's a free download at:
  10. Colin Shapiro

    Colin Shapiro Senior member

    You could try repairing the file. If you have DiskWarrior, that might help.

    You could also check that the file type and creator are correct.
    Should be:
    Type: Sd2f
    Creator: Sd2a

    Lots of free apps for this eg Quick Change:
  11. georgelegeriii

    georgelegeriii Senior member

    Soundhack IS fantastic for many things, I can't recommend it enough. I have a hunch it will at least allow you to open and hear the audio, which can then be saved and opened in Logic. Save as wav if you can from soundhack.
  12. sonnykeyes

    sonnykeyes Senior member

    I suspect that the file was originally an aiff like the rest of the audio in the project, but Logic couldn't figure out what it was and guessed it was sd2, so this may only add to the confusion. If it can be resaved as aiff or wav it will probably import back into the project better.
  13. afavreau

    afavreau Senior member


    Disk Warrior detected that the "resource file list" was damaged, but could not repair it.

    Soundhack did it! It proposed to make a "header change". After a few attempts (16 or 24 bit? mono or stereo? save in the right format...), it managed to repair it.

    So yes, I presume that the file was originally a .aif but because it was corrupted, Logic assumed it was a SD2 file.

    TOPIC CONCLUSION: Disk Warrior is great to identify all your damaged audio files on your Hard Drive and Soundhack (free) is great to repair them!

    Thankyou very much!
  14. sonnykeyes

    sonnykeyes Senior member

    Glad to be able to help!
  15. Colin Shapiro

    Colin Shapiro Senior member

    @ afavreau:
    Glad you got sorted.
    Thanks to the folks who suggested Soundhack - I'd forgotten about it. Very useful app indeed.

    Re Diskwarrior:
    Even if it sometimes can't repair files, it's an essential tool for keeping you going. A fellow Logic user just had his main drive die and we got it back to life with the DiskWarrior CD.
    I run DW regularly just to keep directories in order and it certainly seems to help prevent problems.

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