gama u VGA

[VA Elektronik - Andel Vladimir ing.]

On Sat, Apr 06, 2002 at 03:21:35PM +0200, AURO wrote:
> uva?aemyj tovari??. analogov? vinilov? desky maj? tak vysokou hustotu datov?ho
> toku, ?e se z toho mohou modern? PC pod?lat a proto se pou??vaj? v?elijak?
> podvodn? form?ty, kter? oblbuj? u?ivatele. zlat? st??brn? analog.
> kdyby p?n b?ch cht?l, tak m?sto ?e?i na sebe prd?me digit?ln? (prd=l, neprd=o)
> 
> 
> Sa?a (Alexandra) wrote:
> 
> > Zdravim,
> > tak se mi konecne podarilo rozbehat scaner a tudiz snad jiz v pondeli vecer
> > budu schopna poslat ten navod, kterak sobe zhotoviti vyrezavacku LP desek.
> > Jenom by me zajimala jedna vec: Kde chcete sehnat potrebne folie ? Copak to
> > dneska jeste nekdo vyrabi ?
> >
> > Sasa

Tak ted vazne:

http://www.cs.ucl.ac.uk/staff/S.Bhatti/D51-notes/node6.html

<kus_citace>

There is a theoretical maximum to the rate at which information passes
error free over the channel. This maximum is called the channel capacity C.
The famous Hartley-Shannon Law states that the channel capacity C is
given by: 

    C = B . log2( 1 + S/N ) b/s
 

Note that S/N is linear in this expression. For example, a 10KHz
channel operating in a SNR of 15dB has a theoretical maximum
information rate of 
10000 * log2 (31.623) = 49828 b/s.

</kus_citace>

To je samozrejme teoreticke maximum, ale pri vhodnem nadimenzovani
digitalniho toku, lze jiste ...
Znalci parametru LP desek a gramo jiste doplni hodnoty a vycisli ten
tok (teoreticky). :-)
-- 
Zito