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Do Dacs have error correction?

If part of a digital signal is lost or corrupted by the cable between a CD player and a DAC does the DAC perform a redundancy check on the data and ask the CD player to resend it?

This is to settle yet another cable arguement, I think it does not as there is no outbound connection to the CD player from the DAC. I believe the CD player just sends a constant stream of data and if any data is lost or corrupted by a dodgy cable then it is lost.

Thanks in advance
dlite

Showing 1 response by morbius396c

morbius396c
134 posts
 
Dlite,

Yes - DACs have error correction. As Mr hosehead points out;
it's not the type where an error causes a retransmittal of the
data.

No - the CD uses Reed-Solomon encoding. That is there are
extra bits in the signal that are derived from the data on the
CD and used to detect and correct errors.

Dr. Gregory Greenman
Physicist
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