[Icecast] AACPlus Shoutcast v1.90

Paul Martin pm at nowster.zetnet.co.uk
Wed Sep 7 15:06:00 PDT 2005


On Wed, Sep 07, 2005 at 06:51:21AM -0500, Jay Krivanek wrote:
> Yes it is 44.1kHz.  However SBR is not the original, everything higher then
> 22.05kHz is recreated.

Are you sure you mean those figures? Wouldn't there be a lot of 
aliasing?

http://en.wikipedia.org/wiki/Nyquist_frequency

> Also Parametric Stereo recreates the Stereo experience.

Similar to what Vorbis does, then?

> The actual audio data is simply a 24kbps AAC stream at 22050
> mono.  Also it is by no means perfect.  The highs do have an artificial feel
> to them and a little echo.  For what it is though most people don't really
> get annoyed by it and are quite pleased with the feel of it.

Right... so anything above 11kHz is simulated by generating harmonics?

-- 
Paul Martin <pm at zetnet.net> (work)
  <pm at nowster.zetnet.co.uk> (home)


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