View Single Post
  #71   Report Post  
Old October 1st 07, 01:57 AM posted to rec.audio.tech,rec.audio.car,rec.radio.shortwave,ba.broadcast
Telamon Telamon is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 4,494
Default HD RADIO is no worse than DAB or DRM radio

In article om,
Steve wrote:

On Sep 30, 5:09 pm, "David Eduardo" wrote:
"SoCal Tom" wrote in message

...



"SFTV_troy" blabbed:
... this new receiving technique would not improve the sound
(it would still be limited from 100-6000 hertz), but would only reduce
interference.


At least in the States, AM & FM broadcasting is limited to 50 Hz to 15KHz.


AM is restricted by the NRSC standard to a 10 kHz brick wall.



Digital broadcasting is limited to under 20 Hz to over 20KHz, or
basically, the extent of the normal human hearing range.


If you're listening to 100 to 6,000 Hz, you're listening to a poor
telephone connection.


Bob Orban, on the NRSC committee, found that consumer radios almost without
exception, rolled off by at least 10 db by 4.2 kHz, and passed practically
nothing over 5 kHz.


That's funny, I just asked Bob if he 'found' this and he said no way,
that you're basically just making **** up off the top of your head.


Bob didn't test all the different model radios.

--
Telamon
Ventura, California