Kenton A. Hoover wrote:
>It has to do with what you mean by playing "correctly". Introduction of
>single bit errors will likely not to even be detectable to the human ear.
Exactly. So a digital copy made from a S/PDIF data stream will have the
same 'undetectable to the human ear' error.
>However, the logical place to insert such errors is on "block" boundries.
>Remember that CD-ROM ripping requires that you read the data off the disk
>in blocks, but the data wasn't written in blocks, so you have to guess
>how to turn the blocks into a single stream of bits.
As I said in my previous post, CD-DA ripping could be stopped by this
technique, but preventing a CD deck from outputting S/PDIF digital data? I
don't think so somehow!
My point is (or was) that ripping is an inexact procedure that could easily
be foiled by the insertion of deliberate CRC errors, but it certainly is not
the only way to copy the digital audio data on CDs. In my opinion if it can
be played, it can be copied. The uncopyable CD will not succeed.
-cb
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