[BC] IBOC AM Quality

Rich Wood richwood
Fri Mar 23 19:23:03 CDT 2007


------ At 04:52 PM 3/23/2007, Robert Orban wrote: -------

>If you use exactly the same processing on the HD and FM analog 
>channels and modulate each one to its permitted peak level, the HD 
>will be 5 dB louder when the receiver crossfades. THAT would drive 
>the listener nuts. Instead, you use 5 dB less limiting on the 
>digital channel, the receiver fades smoothly from analog to digital, 
>and the digital sounds much less grungy if the analog FM is heavily procesed.
>
>I keep explaining this but it doesn't seem to have sunk in :-(

I think it has sunk in. The analog is heavily processed and the IBUZ 
isn't. That means the "quality" keeps changing. That's annoying. In 
my market there is absolutely no audible difference between analog 
and digital. There's no change on my Accurian in the 8 seconds it 
takes to switch to digital. I have to look for the HD icon to know 
I'm enjoying the awesome sound of precision-processed IBUZ.

I know what you're talking about and I'd love to see it actually 
happen. However, as long as there's a sun in the sky there will be 
grunge processing on all channels.

Rich




More information about the Broadcast mailing list