[LAU] HD Radio broadcasts

[The Other]

Joe Hartley wrote:
> On Tue, 15 Jan 2008 08:18:52 -0600
> The Other <sstubbs at shout.net> wrote:
>> What is HD radio?  A local radio station is advertising they are the
>> first HD radio station in my listening area.  Is HD supposed to mean
>> High Definition?
>>
>> How can radio waves be normal for other stations, and HD for this
>> station?  Doesn't make sense to me.  I suspected HD means the
>> recordings have not been so compressed as other 'normal' radio station
>> recordings, and you can actually hear some dynamic range.
> 
> Google is your friend:
>     http://www.hdradio.com/how_does_hd_digital_radio_work.php
> 
> Basically there's a digital component added to the analog.  A HD radio
> picks up the digital signal, and much like a TCP/IP stream can sort packets
> that don't arrive in strict order, sorts them out into a signal without 
> static, hiss or pops.
> 
> The record labels are still going to insist that recordings be compressed
> to within an inch of listenability.
> 
Thanks to all for the replies.  Very illuminating.
Stephen.