The clever bit about hd radio is that it can be used on the same
transmission as fm at the same time.

Brian

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"Serge Auckland" wrote in message
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"David Looser" wrote in message
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"Brian Gaff" wrote in message
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So, after asking a simple question in the tv group, I thought i'd ask
here, why did we go dab, and what of DRM and HD Radio, any chance of
these coming to us?

I thought "DRM" stood for "Digital Rights Management". What has that to
do with radio? And I've never heard of "HD" radio, the term is
essentially meaningless, it sounds like someone trying to jump on the
HDTV bandwagon.

Why did we go DAB? Well "DAB" simply stands for "Digital Audio
Broadcasting" so the term applies to *any* form of digital "radio". Why
did we go for the system we have? At the time it was adopted it was felt
to be a good compromise between quality and cost that's why.

David.



DRM is Digital Radio Mondial, it is a low bit-rate digital radio that can
use short and medium-wave AM transmitters, and using AAC+ compression, is
capable of quite decent results, if not up to FM standards. It is being
promoted as a replacement for short-wave AM in those countries (like
Indonesia) which need a long-range radio medium of better quality than
short-wave.

There have been suggestions that Europe could adopt DRM for AM, but I've
heard no more about his in recent times.

HD radio is an American digital radio system, roughly comparable to our
DAB, but as I understand it use as a more modern form of compression than
the MP2 of DAB, but at no greater bit rates than we're using, but which
nevertheless should therefore manage better quality.

S.

http://audiopages.googlepages.com