AM Stereo?

[Dan Strassberg]

I've heard from at least one person that the CODEC used for the AM version
of HD sounds much better with music than with speech. I suspect that that
comment was based on listening experiences like yours. If 1430 were still
running talk or if WILD were still running HD (or should that now read just
"still running"? I haven't checked today to see if WILD is still on) you'd
have one or two meaningful data points, but Rumba is mostly music, so 1430
doesn't provide much of a data point. After I send this message, I'll check
to see if 1090 is still on.

--
Dan Strassberg, dan.strassberg@att.net
eFax 707-215-6367

----- Original Message -----
From: "Aaron Read" <readaaron@friedbagels.com>
To: "Doug Drown" <revdoug1@verizon.net>
Cc: <boston-radio-interest@bostonradio.org>
Sent: Thursday, March 01, 2007 3:48 PM
Subject: Re: AM Stereo?


> Nope.  You can't broadcast AM Stereo *and* IBOC at the same time.  The
> physics of the iBiquity system don't allow for it.***
>
> I remember asking Mark Manuelian about this a while ago...not long after
> they'd installed IBOC on the main.  He said they had three transmitters:
> a main and backup in Hull, and a third in Allston.  At one time both the
> Hull xmitters could do AM Stereo, but after IBOC was installed only the
> backup Hull xmitter still could.  The Allston xmitter doesn't have AM
> stereo at all.  So if you hear AM Stereo on WBZ, it means they're
> running on the backup xmitter from Hull.
>
> Speaking of IBOC...I just got a receiver finally, and listening IBOC on
> WMKI, WXKS and WBZ...I swear WBZ's IBOC audio doesn't sound as good; the
> compression artifacts seem more noticeable.  I wonder if that's a
> limitation of voice audio (instead of music) through the HDR codec, or a
> reflection of how WBZ's IBOC was one of the first out of the gate and it
> hasn't been updated?  Or maybe I'm just imagining it.
>
> - Aaron
>
> *** Which should prove interesting for expanded band stations that try
> to upgrade to IBOC, since technically the rules (still) state that they
> must broadcast in AM Stereo.  However, that rule is oft-ignored, I'm
> told.  Much like the rule that EX-AM stations are supposed to take their
> old signals dark after five years...grumble grumble...
>
> --------------------------
> Aaron Read
> readaaron@friedbagels.com
> Boston, MA 02446-2204
>
>
>
>
>
> Doug Drown wrote:
> > Doesn't WBZ?
> >
> > -Doug
> >
> > ----- Original Message -----
> > From: "Aaron Read" <readaaron@friedbagels.com>
> > To: <boston-radio-interest@bostonradio.org>
> > Sent: Thursday, March 01, 2007 11:20 AM
> > Subject: AM Stereo?
> >
> >
> >> Does anyone know who, besides WJIB 740, still broadcasts in AM Stereo
in
> >> the Boston area?
> >>
> >> --
> >>
> >>
> >> --------------------------
> >> Aaron Read
> >> readaaron@friedbagels.com
> >> Boston, MA 02446-2204
> >>
> >>
> >>
> >>
> >
> >
>