[opendtv] Re: FCC Gives Official Nod to DTS

  • From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Sat, 6 Dec 2008 11:37:19 -0800

Even "dumber" in that Heal is spelled correctly, so spell check won't catch
that one.  Me, I can't wait for "thought check."

John Willkie

-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de John Shutt
Enviado el: Saturday, December 06, 2008 8:40 AM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: FCC Gives Official Nod to DTS

Achilles' HEEL

Dumb spel chek.

John

----- Original Message ----- 
From: "John Shutt" <shuttj@xxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Saturday, December 06, 2008 9:34 AM
Subject: [opendtv] Re: FCC Gives Official Nod to DTS


> Bert,
>
> Very nice explanation, but you barely scratched the surface of dynamic 
> echo, which is still the Achilles' Heal of ATSC, and why ATSC needs M/H to

> perform decently in a mobile environment.  DVB-T on the other hand, deals 
> with dynamic echo in exactly the same way it deals with static echo, 
> therefore as long as the guard interval and FEC is sufficient, it just 
> works.
>
> John
>
> ----- Original Message ----- 
> From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
>
>> First of all, I think you correctly imply here that the problem with
>> SFNs is that they create what looks like echoes to receivers. So SFNs
>> only work to the extent that these deliberately-created echoes don't
>> overwhelm the receivers. It's not as simple as the receiver just
>> accepting the signal from one tower, and ignoring the rest. (Which is
>> how cell phones work, and in principle so could broadcast receivers, but
>> that's another discussion.)
>
>
>
>
>
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