Title confusion

Discussion in 'iPod' started by Howard Brazee, Apr 17, 2007.

  1. Howard Brazee macrumors 6502

    Howard Brazee

    Joined:
    Oct 24, 2006
    Location:
    Lafayette CO
    #1
    I just bought the CD "The #1 Opera Album" and ripped it to iTunes.

    But iTunes shows the songs in:
    Greatest Opera Show On Earth [Disc 1]
    &
    Greatest Opera Show On Earth [Disc 2]

    I can change this - but why did it happen?
     
  2. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #2
    The way iTunes works is by taking length data from the disc and then sending it to the GraceNote database. It's possible that two things can happen. One, technically, two albums can be exactly equally long with the same track structure, etc. This is rare, because the length is down to 1/44100th of a second (total number of samples). In this case, GraceNote has no way to tell which it is.

    The second thing that can happen is that more obscure CDs -- collections, compilations, where it is not "first source" material -- are sometimes sold under multiple names, or entered into the database incorrectly.

    Actually, if you look at Amazon.com, it indeed does appear that the same CD was also sold under the name GraceNote pulled up:

    http://www.amazon.com/Greatest-Opera-Show-Earth/dp/B0000042I1
     
  3. dejo Moderator

    dejo

    Staff Member

    Joined:
    Sep 2, 2004
    Location:
    The Centennial State
    #3
    I don't think GraceNote keeps track of that much accuracy. I think they just store the CD length down to the seconds.
     
  4. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #4
    Mmm, no, if it were seconds there would be a lot more instances when you see erroneous duplicates. My understanding is that it's a fuzzy match to the table of contents on the disc, which indexes positions based on samples -- that's where the 1/44,100 figure comes from (cds are sampled at 44.1kHz). The TOC on the disc is not in "realtime." It wouldn't make any sense for it to be. Rather, it's in disc positions, which code back to the sample rate.

    Source.
     
  5. Howard Brazee thread starter macrumors 6502

    Howard Brazee

    Joined:
    Oct 24, 2006
    Location:
    Lafayette CO

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