This standard is formulated in order to meet the increasing demands of digital audio/video industry development and the coding needs of high quality multichannel digital audio signals in different application domains. This standard ensures that the technical scheme supports the requirements of the application of different code rates and channels, on the basis of independently researching and developing audio coding /decoding algorithm, and through the processes of the optimization of algorithm, and the implementation, test and verification of software and hardware.   

The multichannel digital audio coding technology formulated by this standard is applicable for carrying high quality multichannel digital audio signals on the storage media with limited capacity or transmission channels with limited bandwidth.