Appendix 1: Error correction
Error correction is one of the most advanced areas in the entire field of digital audio. It is purely because of error-correction techniques that reliable digital recordings can be made, despite the frequent occurrence of tape dropouts.
In the next two sections, we will discuss the theory behind the EIAJ format P, Q and CRC codes. Because of the special nature and the complexity involved, a mathematical treatment of this topic is unavoidable. However, every attempt has been made to pool all the material together in a concise and systematic manner. Examples are included to make the situations more vivid. The only prerequisite in reading them is some knowledge of matrix algebra.
P, Q and the cyclic redundancy check ...
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