scope:

This standard applies to the reversible process achieved by te PCM encoder/decoder system that transforms two audio signals into one PCM signal for compatibility with either the 60 fields/525 lines or the 50 fields/625 lines television system. This standard has been prepared to establish the signal format and other required for the PCM encoder/decoder system that is intended for recording and reproducing audio signals in the form of a PCM signal through (part of) a domestic videocassette system. The standard seeks to achieve standardized system operation, compatibility of encoder/decoder systems with players and systems, and interchangeability of recorded tapes.