Re: [Hampshire] OT:Fwd: Mark Thompson on Media Show on R4 ab…

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Author: The Holy ettlz
Date:  
To: Hampshire LUG Discussion List
Subject: Re: [Hampshire] OT:Fwd: Mark Thompson on Media Show on R4 about FM switch off

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On Wed, 2009-06-24 at 12:36 +0100, James Courtier-Dutton wrote:
> From reading the DAB standards, European Standard 201 980, it seems
> quite clear that the audio quality of DAB, or DAB+ for that matter is
> worse than the old FM.
> It uses 12kHz or 24kHz sampling when we are all used to 44.1kHz CDs
> and 48kHz DVDs.


I thought Musicam could use those higher sampling rates. Most of the
distortions I hear on DAB are compression artefacts (sometimes it's
barely transparent at 192kb/s). This is most likely because back when
the standard was designed, the cost/performance ratio was much higher on
DSPs, and an MP2 derivative was the best tradeoff between quality,
bitrate and computational workload.

I understand that DAB+ is supposed to be based around AAC or something
and should improve sound quality somewhat.

James

-- 
The Holy ettlz                              TheHolyettlz@???
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