Appendix 1 to Annex 2 (Informative) Information about coding systems that have been demonstrated to meet quality, and other, user requirements for emission Tables 2 and 3 list, in the left-hand column, the requirements for high-quality emission and intermediate quality emission, respectively, specified in Annex 2. Other columns (of which four exist at this time) show the ability of specific codecs to meet these requirements. It is anticipated that future revisions to this Recommendation will contain additional information about additional codecs. TABLE 2 High-quality emission List of requirements from MPEG-2 AAC LC profile(3) AC-3/E-AC-3 Annex 2 Layer II 1.1 Channel configurations Fulfilled Fulfilled Fulfilled 1.2 Audio services Fulfilled Fulfilled Fulfilled 1.3 Flexible allocation of Fulfilled Fulfilled Fulfilled channels 1.4 Ancillary data Fulfilled Fulfilled Fulfilled 2.1.1 Basic audio quality Fulfilled Fulfilled Fulfilled at 144 kbit/s per at 192 kbit/s per at 256 kbit/s per 2 channels [1] 2 channels [1] 2 channels [1] 2.1.2 Stereo image quality Fulfilled Fulfilled Fulfilled 2.1.3 Quantization resolution Fulfilled Fulfilled Fulfilled 2.1.4 Sampling frequency Fulfilled Fulfilled Fulfilled 2.1.5 Bandwidth Fulfilled Fulfilled Fulfilled 2.1.6 Emphasis Fulfilled Fulfilled Fulfilled 2.1.7 Post processing Not demonstrated Not demonstrated Not demonstrated 2.2 Coding delay Fulfilled(1) Fulfilled(1) Fulfilled(1) 2.3 Error resilience Fulfilled Fulfilled Fulfilled(2) 2.4 Recovery time Fulfilled Fulfilled Fulfilled 3.1.1 Downward compatibility Fulfilled Fulfilled Fulfilled 3.1.2 Backward compatibility Fulfilled by simulcast Fulfilled by simulcast Fulfilled by matrixing method method method 3.1.3 Forward compatibility Fulfilled by dual Fulfilled by dual Fulfilled decoders decoders 3.2 Bit rate Fulfilled Fulfilled Fulfilled 3.3 Decoder complexity Fulfilled Fulfilled Fulfilled
Appendix 1 to Annex 2 (Informative) Information about coding systems that have been demonstrated to meet quality, and other, user requirements for emission Tables 2 and 3 list, in the left-hand column, the requirements for high-quality emission and intermediate quality emission, respectively, specified in Annex 2. Other columns (of which four exist at this time) show the ability of specific codecs to meet these requirements. It is anticipated that future revisions to this Recommendation will contain additional information about additional codecs. TABLE 2 High-quality emission List of requirements from Annex 2 AAC LC profile(3) AC-3/E-AC-3 MPEG-2 Layer II 1.1 Channel configurations Fulfilled Fulfilled Fulfilled 1.2 Audio services Fulfilled Fulfilled Fulfilled 1.3 Flexible allocation of channels Fulfilled Fulfilled Fulfilled 1.4 Ancillary data Fulfilled Fulfilled Fulfilled 2.1.1 Basic audio quality Fulfilled at 144 kbit/s per 2 channels [1] Fulfilled at 192 kbit/s per 2 channels [1] Fulfilled at 256 kbit/s per 2 channels [1] 2.1.2 Stereo image quality Fulfilled Fulfilled Fulfilled 2.1.3 Quantization resolution Fulfilled Fulfilled Fulfilled 2.1.4 Sampling frequency Fulfilled Fulfilled Fulfilled 2.1.5 Bandwidth Fulfilled Fulfilled Fulfilled 2.1.6 Emphasis Fulfilled Fulfilled Fulfilled 2.1.7 Post processing Not demonstrated Not demonstrated Not demonstrated 2.2 Coding delay Fulfilled(1) Fulfilled(1) Fulfilled(1) 2.3 Error resilience Fulfilled Fulfilled Fulfilled(2) 2.4 Recovery time Fulfilled Fulfilled Fulfilled 3.1.1 Downward compatibility Fulfilled Fulfilled Fulfilled 3.1.2 Backward compatibility Fulfilled by simulcast method Fulfilled by simulcast method Fulfilled by matrixing method 3.1.3 Forward compatibility Fulfilled by dual decoders Fulfilled by dual decoders Fulfilled 3.2 Bit rate Fulfilled Fulfilled Fulfilled 3.3 Decoder complexity Fulfilled Fulfilled Fulfilled
R-REC-BS.1548-3-201208-S!!MSW-E.docx