[opendtv] Re: HD Radio chip marks SiPort's recovery
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 11 Mar 2009 15:15:10 -0500
At 2:40 PM -0400 3/11/09, Manfredi, Albert E wrote:
> The real future of HD radio is in the bits, not the primary analog
service.
Well, the audio digital service is a big draw, to me. Like DTV, the
digital audio carries multiple subchannels. In this area, music stations
tend to have two program channels in digital, and talk stations, or talk
+ music, tend to have three subchannels.
I include audio services in the bits I was talking about. It's the
old single analog service that is of little interest for mobile
digital devices, despite the fact it eats up most of the bandwidth.
It is easy to capture a song in digital format - just cache the bits
like a video DVR. It is already possible to identify these digital
songs and mark them for purchase using a service like iPod tagging.
Next step is to be able to purchase the song so you can move it into
your library, rather than waiting to download it later. And needless
to say, there are all kinds of data services that could provide a
value add to an iPhone or iPod Touch.
Since radio is so well suited to mobile and portable use, it seems to me
that the audio digital subchannels should be a big draw. Any new data
streams might or might not be a big deal. This is a repeat of what was
discussed years ago, wrt ATSC data services
The thing that killed ATSC data services was VSB. Too complex and too
unreliable. MAybe with the new mobile TV standard this could change.
The digital FM tuner is far less complex to implement but can still
deliver data services to a device reliably. Look for news headlines,
weather, traffic and possible location based advertising.
.
The FM band is better suited to delivering bits reliably.
I think the real problem with sending IBOC on MW (i.e. the AM band) is
that it interferes with analog AM service, especially at night. Also
that it is limited in capacity, compared with IBOC VHF service. If
analog AM could be shut down, MW digital radio could be VERY
interesting, because the audio quality is very good. A huge improvement
over AM analog audio.
As to selling music over broadcast radio, I have my doubts. If I were a
station owner, I'd sooner get me a web site for that.
All the bits are coming together to enable this. And the broadcasters
need a new revenue stream to pay for the performance fees that the
NAB is fighting...
http://www.rbr.com/radio/13323.html
Regards
Craig
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