In article ,
"Frank Dresser" wrote:

"David Eduardo" wrote in message
. com...

"Frank Dresser" wrote in message
...

"David Eduardo" wrote in message
. net...

wrote in message
oups.com...
You realize if they ever turn on HD at night, DXing will be
history.

And the couple of hundred AM DXers left, most of whom are
anti-radio
and
luddites, will just be SOL.



I'm not aware of any anti-radio luddites, but if I ever meet one,
I'll
be
sure to remind him to get rid of both his radios and his internet
connection.

As to DXers, I find that most today are very opposed to changes in
radio, whether formatically or technically, and are very negative
towards the way stations operate. I have disassociate myself form
DX organisaions as they almost all seem to be out to change radio
to the detriment of those of us who work in the field.

OK, but couldn't much the same be said of building preservationists?
They don't like the changes and want to keep some things the way they
love, despite the fact they have no ownership interest. I wouldn't
call building preservationists anti-architecture, however.



Since essentially no radio listening, in terms of percentage, is
skywave night listening, the other poings are moot.

However, to an Alex Jones SWL-type distrustful paranoid,
Ibiquity's IBOC looks hidden adgenda-ish. It's not about "CD
quality sound" it's about multicasting.

It is about all of this. It is about giving radio the digital
buzzword,
more
channels, and improved AM quality.

Well, it's only my opinion, but the digital buzzword will soon be
worth about as much as the shopworn "turbo" buzzword of a few years
ago. Already, digital is being associated with pixellated video and
cellphone audio. By the time affordable IBOC recievers become
available, the term digital may be a negative.

If there is really much demand for improved AM quality, there would
be more demand for improved AM radios. Better skirt selectivity,
lower distortion dectectors and real noise blankers would be
installed in everyday radios. Such things are available in hobbyist
radios. Most people don't want to pay even a little extra money for
a radio.

I think the multichannel capability might attract the most consumer
interest, if such interest develops.



So, if I've got it wrong, please tell me. Is it impossible for
the IBOC-AM scheme to be used for multicasting?

Pretty much so. Not enough bandwidth unless analog is dropped and
all the signal is devoted to digital.



Yes, but ibiquity anticipates digital radio will replace analog.
Then what? Will the former analog channel be replaced with digital
channels?

And might some of these replacement digital channels be pay channels?

Paranoid minds want to know!

This is a simple concept that many people don't seem to get.
Information rate directly correlates to bandwidth in this way, higher
rate and more detail means larger bandwidth. Analog or digital is just
a method of encoding information. Narrow filtered analog is similar to
low rate digital. It does not matter what digital method you use you
can't get around the fact that a better picture or audio means you need
to use more bandwidth.

There is more then one way to encode the analog world into digital and
back and some methods are more efficient then others but there is no
magic digital encoding system comprised of one or a combination of
encoding methods that will magically stuff more information into the
same bandwidth.

The DRM controversy has gone on for a long time where the claim that
DRM sounds better then analog in the same bandwidth. This is a bunch of
BS. Not only does this violate the laws of physics it further makes
less sense from the standpoint of conversion of analog to digital at
the transmit end and then digital back to analog at the receive end.
Technically changing from analog to digital and back introduces
conversion errors so DRM in the same bandwidth has to sound worse than
analog. The only way DRM can sound better is to use more bandwidth than
analog.

So there are are two basic concepts for anyone reading the news group.
DRM and IBOC claims are a bunch of BS. Analog or any digital system
will sound better the more bandwidth you use.

--
Telamon
Ventura, California