Converting mp3 files to AAC

Discussion in 'iTunes' started by cesjr, Nov 19, 2007.

  1. cesjr

    cesjr New Member

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    I used iTunes to convert all my old mp3 files to AAC. I never expected my music files to expand in the way they did, (almost over a Gig.)

    So what has happened here, do mp3 files have some sort of compression? Is my music better quality now in the AAC format?

    Thanks
  2. RoundysSince

    RoundysSince New Member

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    Firstly, you're losing audio quality by compressing an already compressed file. They are both compression formats.

    The file size changes in both MP3 and ACC depending on the bitrate you use. An audio engineer would be able to better inform you on which option is the best. But, personally, just going by my ear using a Sennheiser 280 HD Pro and my car system with a subwoofer - I prefer to use ACC at 128kbps. The file size is smaller and the audio is better compared to a 192kbps MP3.

    Higher bitrate in a format = better sound = but more processing = more battery power.

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