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- Path: sparky!uunet!pipex!warwick!uknet!edcastle!sss
- From: sss@castle.ed.ac.uk (S S Sturrock)
- Newsgroups: rec.audio
- Subject: Re: Stabilizer Rings (Was: MiniDiscs -- What Are They?)
- Message-ID: <30748@castle.ed.ac.uk>
- Date: 25 Jan 93 14:32:59 GMT
- References: <MJKOBB.93Jan18191506@media-lab.media.mit.edu> <5491@calmasd.Prime.COM> <shetline-230193114328@128.89.19.90>
- Organization: Edinburgh University
- Lines: 29
-
- In article <shetline-230193114328@128.89.19.90> shetline@bbn.com (Kerry Shetline) writes:
- >Anyway, it's often the golden-eared with outboard DACs that claim this
- >supreme sensitivity. Outboard DACs, by virture of being in a separate box,
- >should be well removed from the proximity of the servo motor. By virtue of
- >their price, these DACs had better be well-shielded.
-
- I had thought that an external DAC would be immune to the effects of
- stabilisers, however you could have knocked me over etc. when I tried
- it with an *OPTICALLY* coupled transport and DAC and the effect was
- still very marked. I expected the effect to be maintained with co-ax
- linkage but optical? Weird.
- >
- >What's left for the rings to do, other than color-code your disc
- >collection?
-
- All tests I have seen about these things have been to see if they reduce
- bit errors etc, some have actually increased the BER. I suspect the place
- to look is the same as where differences in various transports occur, the
- rise and fall times of the S/PDIF data stream, accuracy here has been shown
- to directly effect jitter and perceived sound quality. Bit errors are
- generally correctable anyway so that was never the place to look for reasons
- why these things affect the sound.
-
-
- --
- Shane Sturrock, Biocomputing Research Unit, Darwin Building, Mayfield Road,
- University of Edinburgh, Scotland, Commonwealth of Independent Kingdoms. :-)
-
- Civilisation is a Haggis Supper with salt and sauce and a bottle of Irn Bru.
-