iPods for Bird Calls

To: Birding-Aus <>
Subject: iPods for Bird Calls
From: Paul Taylor <>
Date: Sun, 14 Jan 2007 14:15:10 +1100
Robert Gosford wrote:
> is "AAC" a proprietary Apple system and if so how do I save from
Audacity to it?

AAC is not proprietory - it's short for Advanced Audio Coding, and
is part of the MPEG-2 and MPEG-4 standards.  The iPod/iTunes default
format is MPEG-4 AAC (.m4a and .m4p files - the latter are protected,
typically music bought online.)  MP3 is MPEG-1 Layer 3, an earlier

I've already used CDex to rip to MP3 (good) and Audacity to edit (equally good so far ... I'm just doing an export on one file and wondered about the AAC format - I can save to MP3 (not suitable for iPods?), Ogg Vorbis ???) or WAV (which my files are already).

iPods can play MP3 files; AAC is preferred because it is more efficient.
I save my music as 160kbps AAC files, which sounds at least as good
as 192kbps MP3 that I've used previously.  (Though with album art,
the file sizes are about the same.)

I don't think CDex can save in .m4a format, but you can use iTunes
to convert the WAV files before loading them on the iPod - or just use
MP3.  :)


   Paul Taylor                                  Veni, vidi, tici -
                           I came, I saw, I ticked.

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