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Article #1146Re: Audio quality of CDR, any theory ????
From: Richard D Pierce
Date: Tue, 15 Dec 1998 00:00
Date: Tue, 15 Dec 1998 00:00
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2234 bytes
In article <F308098DC0C8DC2F.31FD14AE39298D33.674812088DCBAA2A@library-proxy.airnews.net>, Chung <kclee@hk.gin.net> wrote: > >Audio CD format has no error correction such as the "Check sum" of >Computer CD ROM. So, even error, the transport (or reader) don't know >and will no correction made. This is completely, utterly and totally untrue. Audio CD format, as ANY text on the matter will describe, has a rather sophisticated, multi-layered error detection AND correction algorithm in pace, from siple block checksums al the way to multi-level cross-interleaved Reed-Solomon encoding. Whereever did you come up with the notion that there is no error checking. > Only the DAC will check for reasonable signal and correct it. Again, totally false. The DAC has no such capability, because no such capability is needed. The error detection and correction has been applied LONG before the data ever reaches the DAC. Check out Pohlmann, "Principles of Digital Audio,", you'll find that your assumptions are way off base. -- | Dick Pierce | | Professional Audio Development | | 1-781/826-4953 Voice and FAX | | DPierce@world.std.com |
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109f11,48d41a4dac9741b4 X-Google-Attributes: gid109f11,public X-Google-Thread: fb1f8,48d41a4dac9741b4 X-Google-Attributes: gidfb1f8,public X-Google-Thread: 10d85e,48d41a4dac9741b4 X-Google-Attributes: gid10d85e,public X-Google-Thread: f6728,48d41a4dac9741b4 X-Google-Attributes: gidf6728,public X-Google-Thread: 10ff83,48d41a4dac9741b4 X-Google-Attributes: gid10ff83,public X-Google-Thread: 105a81,48d41a4dac9741b4 X-Google-Attributes: gid105a81,public From: DPierce@world.std.com (Richard D Pierce) Subject: Re: Audio quality of CDR, any theory ???? Date: 1998/12/15 Message-ID: <F409L2.5D3@world.std.com> X-Deja-AN: 422465512 References: <753ar1$p8u$1@justice.csc.cuhk.edu.hk> <F308098DC0C8DC2F.31FD14AE39298D33.674812088DCBAA2A@library-proxy.airnews.net> <754fe5$b89$1@remarQ.com> Organization: Professional Audio/Transducer Design Newsgroups: rec.audio.tech,rec.audio.opinion,rec.audio.misc,hk.rec.audio-visual,uk.rec.audio,tw.bbs.rec.audiophile