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Article #5418

Re: CD/LD jitter: I certainly do get it! (Was: Kerry doesn't get it...)

#5418
From: Hans C Larsson
Date: Sun, 03 Jan 1993 22:08
24 lines
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The problem arises when an unstable pulse train is *RECEIVED* by
a D/A-converter *FROM* a digital transport.
(I.e. between *TWO* boxes.)

The receiver has to Phase Lock on a square wave which might not
be very "square".

From this you will get time-shift on the samples on the *RECEIVING*
end since (virtually) all D/A-converters lacks any significant
amount of buffer memory *COMBINED* with re-clocking of the signal.
(The only exception that I know of is the (horrendously expensive)
Technics SH-X1000 D/A converter).

Note that any amount of buffer memory is useless without
re-clocking of the signal.

I guess that re-clocking might be tricky since the receiver must
let his clock "drift" to avoid long term buffer under/over-flow.

A simple way is to use a good transport...
-- 
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        Hans C Larsson			Email:	hans@smab.se
	Saab Missiles, Sweden		Motto:	"keep it short"
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Message-ID: <1993Jan3.220805.9323@smab.se>
Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!seunet!green!hans
References: <shetline-311292220109@128.89.19.85> <shetline-311292221445@128.89.19.85>

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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!seunet!green!hans
From: hans@smab.se (Hans C Larsson)
Newsgroups: rec.audio
Subject: Re: CD/LD jitter: I certainly do get it! (Was: Kerry doesn't get it...)
Message-ID: <1993Jan3.220805.9323@smab.se>
Date: 3 Jan 93 22:08:05 GMT
References: <shetline-311292220109@128.89.19.85> <shetline-311292221445@128.89.19.85>
Organization: Saab Missiles AB, RLD-Gbg, Sweden
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