C2 error
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A C2 error is a read error of a compact disc. C2 errors can be to a degree recovered by the hardware error detection and correction scheme. A CD drive can have extraction errors when the data on the disc is not readable due to scratches or a smudge. The drive can compensate by supplying a "best guess" of what the missing data was, and supplying the missing data. C2 error correction is an analysis over many interleaved frames, similar to C1 error correction, which analyzed just one frame. C2 provides the more accurate data correction. [1]
Some copy protection schemes add false C2 errors to discs to discourage copying.
References
- ^ Decker, Logan (Winter 2002). "How To... Make MP3s". Maximum PC.