[BC] IBOC AM Quality

[Phil Alexander]

On 23 Mar 2007 at 12:52, 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 :-(

Too many years of listening to over-processed grunge, Bob. The ones
who should be listening are deaf to all change. It will take time,
and maybe a few new ears, but at some point I think they will begin
understanding that the only value of dense processing on digital is
using it for driving listeners away.

---------------------------------------------
Phil Alexander, CSRE, AMD
Broadcast Engineering Services and Technology 
(a Div. of Advanced Parts Corporation) 
Ph. (317) 335-2065   FAX (317) 335-9037