IEC 61937-7:2004+A1:2016 specifies the method for the digital audio interface specified in IEC 60958 to convey non-linear PCM bitstreamsencoded in accordance with the ATRAC, ATRAC2/3 and ATRAC-X formats. This second edition cancels and replaces the first edition publishedin 2002. It constitutes a technical revision. This edition includes the following significant technical changes: In this edition, a newaudio data-type of ATRAC-X is added to ATRAC and ATRAC2/3. Specificproperties such as reference points, repetition period, the method of filling stream gaps, and decoding latency are specified for data-type of ATRAC-X. This consolidated version consists of the second edition (2004) and its amendment 1 (2016). Therefore, no need to order amendment inaddition to this publication.