ABSTRACT
A substantial amount of information is added to the audio data before the compact disc is recorded. Figure 9.1 illustrates the encoding process and shows the various information to be recorded.
There are usually two audio channels with 16-bit coding, sampled at 44.1 kHz. So, the bit rate, after combining both channels, is:
44.1 × 16 × 2 = 1.4112 × 106 bit s-1
Most of the errors which occur on a medium such as CD are random. However, from time to time burst errors may occur due to fingerprints, dust or scratches on the disc surface. To cope with both random and burst errors, Sony and Philips developed the cross-interleave Reed-Solomon error-correction code (CIRC). CIRC is a very powerful combination of several error correction techniques.
