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- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!allegra!alice!jj
- From: jj@alice.att.com (jj, curmudgeons for trvth in audio)
- Newsgroups: rec.audio
- Subject: Re: 20 or 24 bit digital recording?
- Message-ID: <23292@alice.att.com>
- Date: 23 Jul 92 16:08:25 GMT
- Article-I.D.: alice.23292
- References: <1992Jul20.155356.12452@phillip.edu.au> <1353@eagle.ukc.ac.uk>
- Reply-To: jj@alice.UUCP (jj, curmudgeons for trvth in audio)
- Organization: NJ State Home for Bewildered Terminals
- Lines: 33
-
- In article <1353@eagle.ukc.ac.uk> wgd@ukc.ac.uk (Warren Day) writes:
- >Current vinyl is apparently about twice the resolution of CD (assuming
- >you've got a clean record, but we've talked about that).
- No, Warren, we haven't talked about that. The best vinyl in the world
- has a noise level well aove the quantizing noise level of a CD,
- and in no way can in considered to have 'twice the resolution
- of vinyl'.
-
- Since you state otherwise in such an authoritive fashion, I now request your
- references, controls, experimental data (you have to have measured noise
- levels somewhere to do make the claim you make) and so on.
-
- I find (having done the appropriate measurements many times over
- many different systems) the statement that "lp has twice the
- resolution of CD" utterly, hysterically laughable, in fact,
- absurd and bordering on misrepresentation.
-
-
- >16384 ohms +/- 5% is about 800 ohms error. In a multi-bit player there
- >are also resistors of 1 ohm, 2 ohm, ... , 256 ohm , 512 ohm , 1024 ohm.
- >So the errors really corrupt the sound produced.
- Warren, Warren, Warren, what do you think they use for resistors
- in the DA convertor ladder in a CD player? The whole point of
- laser trimming and such is that (some) manufacturers reach about 15 bits
- of accuracy with their 18 bit convertors (I'm referring to parallel,
- not delta-sigma convertors), and they're getting better all the time.
-
- If they used YOUR example, they couldn't get past 4.3 bits.
- --
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- vs *by USENET and like free facilities granted. Said permission is
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-