High-Maitenence Morning Team needs to hear the

[dspxscott]

Re: Into the future!

> > > I wouldn't be surprised if future processors include
> some
> > > sort of "pre-delay studio out", which can be fed from
> the
> > > engineer rack, back to the studio.
> >
> > Most do already.
> >
>
> Do they actually sound like the air chain does off-air?

I can't comment on the other manufacturers but the DSPX and DSPXtra does. We don't 15Khz filter, overshoot compensate, anti-alias or look-ahead limit on the monitor path, all those items increase delay through FIR digital filtering and/or delay lines. The actual dynamics processing (compressors and limiters) don't add any real delay so its only the xover network and input output convertors that contribute to the delay in the monitor path. We use a standard 48khz hard clipper in the monitor path to simulate the sound of the main output clipper. It sounds pretty similar to the main output feed. You couldn't use it on air as it overshoots too much as well as suffering from aliasing distortion when driven too hard. For talent use it is fine and provides a lower delay feed that closely mimics the main output sound and texture.
Best regards
Scott
>

 

[nd2023]

Yeah, just get rid of the stupid IBOC

No one has HD radios, and you lose coverage with IBOC. It's a pain to hear IBOC hash around any station. Satisfy your morning show and your listeners, and dump your IBOC.<P ID="signature">______________
17-year-old radio geek
Location: Princeton Junction, NJ
AIM: KewlDude471
WWPH 107.9 FM: http://wwph1079fm.no-ip.org</P>

 

[TXengineer]

I disagree

> No one has HD radios, and you lose coverage with IBOC.

So the people I know who have them are just figments of my imagination??

No, you don't lose coverage with IBOC. That is just engineering nonsense. Any engineer who understands how basic rf radiation works knows that the increased bandwidth used by the IBOC sidebands is suppressed enough that it doesn't effect the coverage area. I live 90 miles distant from the Boston FM's that are all running IBOC, so you can say I am in the fringe range of them, and they ALL still come in as strong as they used to. Same deal with WPLR and WEZN both on the shoreline of CT, which locally are hammered by 1st adjacents. They both come in also as strong as before.

> It's a pain to hear IBOC hash around any station.

Yes, its a real pain for listeners to tune AWAY from YOUR station anymore because you are blanketing the outside frequencies on cheap tuners.

> Satisfy your <snip> your listeners, and dump your IBOC.

Unless your listeners have IBOC, then piss them off by not carrying the HD signal. And if your listeners don't have IBOC, then they don't know the difference anyways.

What is your next suggestion? Take back Stereo? Noise generated by multipath and other factors does make your signal not seem quite as strong.
Maybe that. Also lets take back Color TV. Heck, it also adds too much to the tv picture anyways, and its bothersome to try to pick up a distant tv station when the color shifts on and off. We don't need changes in technology or any sort of advancement. heck no!

 

[TXengineer]

Re: Awwww...come on, Frank!

Merry Christmas Frank.

It was great to finally meet you at Boscon.

 

[w9wi]

Re: I disagree

> What is your next suggestion? Take back Stereo? Noise
> generated by multipath and other factors does make your
> signal not seem quite as strong.
> Maybe that. Also lets take back Color TV. Heck, it also adds
> too much to the tv picture anyways, and its bothersome to
> try to pick up a distant tv station when the color shifts on
> and off. We don't need changes in technology or any sort of
> advancement. heck no!

Stereo and color TV are confined to the assigned channels. (in the latter case, no easy feat!) Implementing either doesn't result in interference to existing mono/B&W reception.

IBOC, on the other hand, despite its name, is NOT confined to the assigned channel.

I guess the argument is that the service subject to IBOC interference is already subject to interference from modulation peaks on existing analog stations. That any service lost to IBOC interference is already unprotected.

Firstly, that ignores the different nature of IBOC interference. Interference from modulation peaks is transient, has a very low duty cycle. IBOC is there 100% of the time.

Secondly, I think many listeners will be surprised to learn the FCC doesn't believe they can receive their favorite stations... The FCC's definition of noise-limited FM service area is pretty pessimistic. Best I can tell, a full-fledged Class A is only protected to 28.3km. That's less than 18 miles.

The problem will come up in outer suburbs. Listeners in Pleasant View, Tenn. trying to listen to Radio Lightning (WRLT 100.1) on their commute to Nashville & finding it gone to WVVR-HD (100.3C Hopkinsville KY). Listeners in Waukegan, Ill. losing 97.1 The Drive under the IBOC sidebands of their other transmitter on 96.9 in Zion. Listeners in New Brunswick, NJ losing WKTU 103.5 to the WPRB-HD 103.3 hash. Will they be able to figure out why they can't get their favorite station? Probably not. Will they start listening to their local station instead? At least in Pleasant View there is no other station with the same format; they'll pop in a CD or go buy XM instead.

I won't even mention the boondoggle that is IBOC on the 530-1710KHz band.

 

[wannabenewsboy]

> Works best for clients.

I've got a Starguide II box sitting in the basement, along with some other odds and ends that I could put into service for something goofy like that.

Really gotta mark that stuff out of the inventory next year...<P ID="signature">______________

</P>

 

[Fergie]

> Alright... I'm stuck...
>
> We just installed an HD Transmitter.... Now.... With the
> delay, our morning show, and all personalities have to
> listen in "Pre-Delay". Is there any way that they can here
> the reverb and other processing on the "Pre-delay" feed
> instead of the "Air Feed"??
>
> The morning show is moaning big time about this.... Any
> suggestions?
>
This is not a new problem with the onset of IBOC/HD transmitters, the problem has reared it's ugly head ever since the onset of studio profanity delays. Even a minor delay will cause a seemingly normal jock to go bezerk.
For many years we have been tapping the studio output and then adding processing to it and returning it to the studio as a "Pre-Delay" signal.
This allows you to give the jocks a real time signal with all of the processing they want to hear. We have even gotten to the point of using a processor (Aphex) that allows us to daypart the processing to keep all of the high priced NY city talent happy.