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Apple to announce AAC+

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By Jeremy Horwitz

Editor-in-Chief, iLounge
Published: Tuesday, October 26, 2004
News Categories: iTunes

Apple-X reports that “Apple director of QuickTime product marketing, Frank Casanova, will deliver a keynote speech at the Cellular Telephone and Internet Association (CTIA’s) Wireless IT and Entertainment 2004 [today] in San Francisco.” Casanova is expected to announce Apple’s support for a next-generation AAC encoding format with superior compression, ready for use on cellular networks.

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Comments

1

If true, this would be great news for Mini owners. Being able to encode at 64 kbps with CD quality results would essentially double the song capacity. Has anyone tested the AAC+ codec to verify the quality claims?

Posted by Drew on October 26, 2004 at 12:24 PM (PDT)

2

I’m assuming that the sound would be similar to MP3pro vs. MP3—more compression with the same sound quality, but (at least to my ears) a more fatigueing sound. Is this in prep for Apple’s flash-based iPod?

Posted by Avi on October 27, 2004 at 12:55 AM (PDT)

3

AAC+ or AAC-HE is actually a AAC-LC with SBR (Spectral band replication)

64kbps AAC HE is a 22.5kHz AAC-LC+SBR information (to reproduce hghi frequency signal cut off by low pass filter)

And yes, it don’t sound good as AAC-LC at 128kbps.

AAC-HE don’t suite music application (that required hifi audio) but I think it has potential in mobile phone application or high quality voice codec

Posted by :p on October 27, 2004 at 3:02 AM (PDT)

4

I tested Nero’s AAC-HE encoding capabilities.  A 64 kbps sounds better than a 128 kbps AAC-LC.  CD quality is achievable at 48 kbps for AAC-HE so 64 kbps is a bit more, kinda like how CD transparancy is achievable with 96 kbps MP3pro.  I am thinking about ripping my tracks again but that would be alot of work especially if Apple didn’t AAC+ support to the 3rd gen. iPod.

Posted by asdf on October 27, 2004 at 5:12 AM (PDT)

5

Does a 3g ipod play mp3pro files? With this anouncement will newer versions of itunes ahve aac+ as an option to trip cds?

Posted by Braden on October 27, 2004 at 12:51 PM (PDT)

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