On the TeeVee Nooz this AM, I saw an item on "High Definition Radio".
Come on, gimme a break! Broadcast FM has had better frequency response than the human ear for almost fifty years!
Apparently, they're touting it for AM, and a variation on Muzak, where each FM station can have another broadcast alongside it, sort of.
And a car radio that can receive it is $500.00.
Sheesh! Rich
"Rich Grise"
** Been around for several years already.Not that it really matters on music programme.
** FM broadcasters can have an extra 96kbit ( MP3 type) signal using CODFM - pretty much immune to multipath distortion that plagues FM in many locations. ** All the usual radio and TV broadcasting will be "digital" before too long.Here in Australia, free to air analogue TV signals are all due to be *turned off* in 2010 by government regulation - meaning everyone will have to get a digital STB. You can buy one here for as little as A$50.
The stated reasons are improved picture quality, additional channels and a HD channel for each broadcaster PLUS clearing the VHF band for new services. In rural areas, the VHF band has already been cleared of VHF TV signals - while in the major cities, the VHF band below 174MHz is to be cleared of TV.
The 88-108 FM band is safe for the time being.
Cable TV networks have already gone digital and have announced they will cease supplying the old analogue signal soon as all customers can be changed over to new STBs.
...... Phil
We are stuck with the same dictatorial BS here in the States.
Alternative buzzword: IBOC
On the (Mediumwave) AM band, it's a real abortion. They send out digital sidebands that sound like powerline hash 15-25 kHz on either side of the carrier. So that if you've been able to get an out of town signal on those "adjacent" frequencies, now they have legal jamming.
They don't run it at night. Yet.
Mark Zenier snipped-for-privacy@eskimo.com Googleproofaddress(account:mzenier provider:eskimo domain:com)
If it's *only* $500.00, it *can't* be good enough for an audiophool. Maybe that's just the price for the dynamically balanced eliptically cross-resonated cadmium enriched tuning knob?
Ed
I sure hope this never works out on AM.
SioL
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