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What is the difference between Siren14 and G.722.1 Annex C?

April 26, 2017annex difference g.722.1 Siren14

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What is the difference between Siren14 and G.722.1 Annex C?

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G.722.1 Annex C is the formal name for the codec, as approved by the ITU. Siren14 is an informal name which refers to an earlier form of the codec and has slight differences in the bitstream format. The Siren14 bitstream format is different to that of G.722.1C. Siren14 has 2-b bitrate indicator at the beginning and 4-b CRC at the end. G.722.1C has coded data only. Audio quality is same for both codecs. All new implementations of “Siren14” should conform to the G.722.1C specification.