• Siren™ 14/G 722.1C

    Polycom's patented Siren™ 14 algorithm offers breakthrough benefits compared to earlier wideband audio technology. Siren™ 14 delivers low-latency 14 kHz super-wideband audio at nearly half the bitrate of the alternative MPEG4 AAC-LD codec, while requiring one-tenth to one-twentieth of the computing power. As a result extra processor cycles are available for improved video quality or Internet applications, and batteries will last longer on mobile devices.

    The technology, which is offered with royalty-free licensing terms, provides near-CD quality audio for better clarity and less listener fatigue with applications like video conferencing. Siren™ 14 requires dramatically less computing power and bandwidth than alternative wideband audio technologies like MPEG4 AAC-LD, eACC+ and AMR-WB+.

    The Polycom Siren™ 14 algorithm offers a number of other advantages over earlier codecs:

    Low computing power solution ideal for battery powered devices

    • Siren™ 14 requires less than 11 WMOPS (Weighted Million Operations Per Second) for encoder + decoder operation, compared to 100 to 200 WMOPS for competing algorithms.
    • Polycom Siren™ 14 can be used with lower-cost processors that consume less battery power such as PDAs, cellphones, or even wristwatches, and saving computing resources for improving video performance.

    Low latency results in more natural, spontaneous conversations

    • Siren™ 14 offers 40 millisecond algorithmic delay, using 20 millisecond frame lengths - the lowest latency of any super-wideband codec, meaning that conversations are more natural and spontaneous.

    Handles speech, music and natural sounds with ease

    • Polycom Siren™ 14 handles speech, music, and natural sounds with equal ease - other codecs break up when presented with natural sounds or music.

    Low bandwidth requirements enable better video quality

    • Requires bit rates of 24, 32, and 48 kbps - leaving more bitrate available for improved video quality.

    Only state-of-the-art audio compression with royalty-free license terms offered

    • All other royalty-free audio codecs use techniques from expired patents; their performance in terms of quality and compression is poor compared to modern standards.

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