How does Siren 14 technology compare to other super-wideband audio codec standards, such as MPEG-4 AAC-LD, MPEG-4 AAC-LC, 3GPP eAAC+, and 3GPP AMR-WB+?
At a given bit rate Siren 14 technology provides audio quality and latency very similar to, and often better than, these other codecs, while consuming 1/4 th to 1/20 th of the CPU cycles they require. This makes it possible to operate Siren 14 with a lower-cost, lower-power processor, to operate more channels of Siren 14 on a given platform, or to free up processor cycles for other jobs such as video processing. As part of the G.722.1 Annex C standardization process, the ITU extensively tested Siren 14 against MPEG-4 AAC LD. The ITU tests showed that the audio quality of Siren 14 is better than that of MPEG-4 AAC LD at all bit rates. Siren 14 also offers the same or lower latency compared to AAC LD, and much lower computational complexity. For a given bit rate and processor cycle budget, Siren is by far the most efficient high-fidelity audio codec technology in the world today; this is why it was chosen as the international standard ITU-T Recommendation G.722.1 Annex C. As well, Siren
