[BC] RE: HD Radio multicasting bandwidth

[Mike McCarthy]

That may be true, but what about the other 20+Kbps which Ibiquity is 
holding back for data transmission.  At this point, I'd rather have that 
added data capacity to put into the audio side. That 20+Kbps is tightly 
regulated by Ibiquity.  So, the bottom line is simply, the licensee pays 
pay for 100% of the equipment and licenses, but only gets 75-80% of the 
capacity. That's just not right.

We should have full access to every bit possible to make the product sound 
as good as possible.  HDTV doesn't have this restriction.  Virtually every 
bit is available for one true HD stream or multiple NTSC streams.  Their 
non-broadcast data streams are very limited.  That's not to say they won't 
use part of that data capacity for store and forward/later playback.  BUT, 
they have that choice and several mega-bits of data to play with.  We have 
less than 150Kbps.

Also, your point about making changes being available in the spring, what 
about receivers which can also decode the same thing?  With a change like 
this, that puts RX's another 2 years out before that feature set will be 
available to the public at large.

MM

At 08:37 AM 10/18/2005 -0400, Neil Glassman wrote
>The 96 kbps can be divided unequally, say 64 kbps and 32 kbps. There is
>currently a table of choices. We are expecting to be able to allow bandwidth
>to be reassigned on the fly in the spring with a larger table of choices.
>
>For those interested in the quality of the HD Codec at various bitrates,
>there are two studies by Dr. Ellyn Sheffield funded by NPR that are posted
>at http://euonline.org/pub/iboc/index.html
>
> >From the synopsis of one study, "testing indicates that 48 kbps is perceived
>by most listeners as providing equal sound quality to the maximum rate of 96
>kbps. Just as importantly, the testing demonstrates that the optimal bit
>rate allocation varies according to specific categories of programming,
>including voice and different genres of music."
>
>--
>Neil Glassman
>VP Strategic Marketing
>Broadcast Electronics Inc.
>Direct phone +1.217.592.4275
>
>
> > On 10/18/05 5:10 AM, "RRSounds at aol.com" <RRSounds at aol.com> wrote:
>
> > Lest we forget, IBOC FM's 96kbps becomes 48kbps each for two programs when
> > you go into multiple stereo program mode. Right?
>
>
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