In article ,
Telamon wrote:
In article ,
(Mark Zenier) wrote:
As much as I dislike giving Mr. Gleason arguement points, you have to
consider that the psycho-acoustic compression schemes used in IBOC-AM
reduce the equivalent analog bandwidth down to a telcom grade signal,
(32-36 kBps = 3 kHz at [mumble 40 dB?] signal to noise ratio). Compared
to the 16-18 kHz of a high-fi AM broadcast signal. (Not than anybody
seems to bother anymore...).
On the other hand, there's going to be a quality loss with all the
gargling kazoo sound effects and other crap from de/compression.
Somebody need to come up with a formula that equates that distortion
to a Signal to Noise ratio.
Oh, that has been worked out and the codecs used by HD are an
intentional form of distortion.
Seriously, there needs to be a way of equating artifact distortion to
bandwidth to keep the media managers from adding more and more channels
to the point where it all sounds (or looks) like crap. The "free market"
won't work, here, because the viewer/listener is either, 1) in the case of
subscription media, trapped in a monopoly situation, or 2) for advertiser
supported media, is not the customer but instead "is the product" (or,
if the wrong age, "not in the demographic" and doesn't count at all).
Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)