Newsgroup: it.hobby.hi-fi
Titolo: Jitter=analogico?

da: 
http://www.customanalogue.com/terra_firma.htm
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The Terra Firma Concept: Jitter is Analogue
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Preamble to the article: A number of people have commented and
expressed some cynicism about the nature and content of the article
below. "Nothing new" and  "advertising" and even that I didn't write
the article, that it was written by Allen Wright. Not true, indeed he
did not read it until after it was posted here. It has also been
claimed that the article lack proper substance and explanation, which
I dispute entirely. 
Now it can be stated that the type of jitter discussed below has been
measured/confirmed in the UK by somebody with access to equipment with
100 times the normal sensitivity and this magnification aimed at
knowing where to look. Normal jitter does not cause digital sound
(more like coluration we hear and adjust to in speakers). But this
specific ultra-low level type of jitter does and is not yet recognised
for what it is and what it does. 
This kind of jitter causes what we hear as digital sound, where tonal
colours are bleached out and also the cause of longer term listener
fatigue. 
This type of jitter has been ignored as it looks like it is less than
1% of the total jitter spec and hence largely masked (but not by your
ears). As the article states below, it is where in the audio spectrum
where jitter shows up that is paramount. It is only a matter of time
before the facts will become better known to others, our competitors.
Until then we have the jump, below there are more than just hints at
what is happening. Please go ahead and read with care and an open
mind. Thank you. Joe Rasmussen.
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The Terra Firma Concept: Jitter is Analogue
While we exist in a Digital Age, the environment that surrounds us,
the physical world, is all analogue. When digital data (the content)
has to be processed, it comes into an analogue world. The digital
content is now a stream and is at the mercy of an analogue world. The
content is maintained, but below the content the analogue world will
put its own footprint. 
And it is far more audible than we ever imagined!
[continua sul sito] 
**
--
Aliis alia placent
http://i41.tinypic.com/314p93p.gif


Ho letto il preambolo, in sunto cosa "promettono" nel sito segnalato?
Ciao
Mimmo

Ciao
Ciao.


    Scusa, ma... io l'ho bloccato; devi proprio rispondergli quotando tutto? 
:-)
-- 
Gianluca 

>Scusa, ma... io l'ho bloccato; devi proprio rispondergli quotando tutto? 
L'ennesima conferma (se ce ne fosse ancora bisogno) di un dereta*o
ambulante, perennemente scoperto e a disposizione del padrone...


 analogica.
L'elettronica digitale � di fatto un'approssimazione dell'elettronica 
analogica: si distingue il livello alto quando si � sopra un tot, basso 
quando si � sotto un altro tot. Quello che sta in mezzo, tra l'altro, si 
chiama noise margin.
Nel digitale si hanno i classici artefatti quanto l'approssimazione, per un 
motivo o l'altro, non sta pi� in piedi (attenzione, la cosa potrebbe 
verificarsi anche per degli attimi soltanto)
Se un lettore CD crea artefatti dovuti al jitter le cose sono due: il cd � 
illeggibile o il lettore � guasto (o si � fuori range di funzionamento, 
range termico di solito)
Ciao
CG