Applies to television receivers designed for the reception of television broadcasts using the two-channel digital sound system. The sound coding-system is based on NICAM 728 and is transmitted by a quadrature phase-shift keying (QPSK) modulated digital subcarrier. THIS CONSOLIDATED VERSION CONSISTS OF THE FIRST EDITION (1992) AND ITS AMENDMENT 1 (1999). THEREFORE, NO NEED TO ORDER AMENDMENT IN ADDITION TO THIS PUBLICATION.