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Article #1103

Re: Audio quality of CDR, any theory ????

#1103
From: Richard D Pierce
Date: Fri, 18 Dec 1998 00:00
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In article <1C5AE5CA0F2F9ADC.A0C451A2A5364D00.E599AFEBD487605B@library-proxy.airnews.net>,
Chung <kclee@hk.gin.net> wrote:
>How the CD Transport could make sure the data is 100% corrected on
>real time error correction.  Will it read again on error?  I don't
>think so.
>
>So, this type of "error correction" could only provide
>acceptable/reasonable approximated signal output.  I say it is not
>error correction.  It is signal approximation only.
>
>May be Arny's suggestion, assisted by special software could make sure
>error free.  But General CD reader could not.

Mr. Chung's conclusions and assertions are simply 100% wrong. Normal audio
CD has very sophisticated real time error detection AND correction
algorithms in place nd has since it was first introduced. He says it is
not error correction, yet he has NO idea what he is tlking about. He
mistakes error correction (which is in place on ALL reads from ALL CD's by
EVERY CD player in existance) with error concealment (which is ONLY in
place if ALL the error correction breaks down).

We would again point Mr. CHunk to texts suuch as Pohlmann's "Principles of
Digital Audio," Chapter 5 and Chapter 9. There he can learn, hopefully,
that what he thinks and what he is so sur of is simply not correct.

-- 
|            Dick Pierce            |
|   Professional Audio Development  |
|   1-781/826-4953  Voice and FAX   |
|       DPierce@world.std.com       |
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From: DPierce@world.std.com (Richard D Pierce)
Subject: Re: Audio quality of CDR, any theory ????
Date: 1998/12/18
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