On Thu, 08 Jul 2004 16:54:19 GMT, "Cosworth"
wrote:

"Stewart Pinkerton" wrote in message
news:fm2Hc.41766$%_6.25609@attbi_s01...
..
To clarify one point - oversampling has *nothing* to do with error
cortrection. Data redundancy and error correction are achieved via the
use of a cross-interleaved Reed_Solomon code (CIRC) data structure
which scatters the data around the disc in such a way that even
drilling quite large holes in the disc will not cause any data loss.

I stand corrected. I must've misinterpreted an article in Mix Magazine 20
years ago.

So what IS the purpose of oversampling???

It allows the use of a gentle low-order analogue reconstruction
filter, leaving the 'brick wall' filter in the digital domain, where
it can be easily (and cheaply) implemented with a very high degree of
accuracy.
--

Stewart Pinkerton | Music is Art - Audio is Engineering