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Stereophile magazine reviews the iPod

Discussion in 'Computers' started by Allan Mack, Oct 17, 2003.

  1. Allan Mack

    Allan Mack Well-Known Member

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  2. Scott L

    Scott L Well-Known Member

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    ooo didn't know AAC can compress hi-res audio with a 96kHz samp rate. [​IMG] Nice article!
     
  3. Pete_S

    Pete_S Well-Known Member

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    As far as iTunes for Windows is concerned, it seems you can only encode AAC up to 48kHz. I tried converting a 16-bit (iTunes wouldn't even open a 32-bit) 96kHz wave at 192kbps and auto sample rate (other options were 44.1kHz and 48kHz) and iTunes spit out a 48kHz file at about 1/3 speed (a 2:53 song turned into 9:07).

    Nero 6's built-in support for AAC produced similar results. The track again seemed to be about 1/3 speed, but the file was simply cut off once the 2:53 mark was reached.

    If 96kHz is indeed possible in AAC, I wonder what software is available that will encode it?
     
  4. TyC

    TyC Well-Known Member

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    So AAC supports 96kHz but not surround sound?
     
  5. Scott L

    Scott L Well-Known Member

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  6. Pete_S

    Pete_S Well-Known Member

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    Scott L,

    Nope, 32-bit was right. A double-check reveals that Windows XP recognizes the file as 24-bit (which may be my problem), but programs like Sound Forge 6 and Cool Edit Pro recognize the file as 32-bit.

    I recently got a new turntable and soundcard, and I've been experimenting with different bitrates and sample rates to see how they effect the end result (16-bit, 44.1kHz for CD). In my limited experience, the click/pop reducer in Cool Edit Pro seemed to do a better job when it had a 32-bit file to work with. Anyway, that's a whole 'nother thread. [​IMG]
     

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