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  2. Siren (codec) - Wikipedia

    en.wikipedia.org/wiki/Siren_(codec)

    Siren is a family of patented, transform-based, wideband audio coding formats and their audio codec implementations developed and licensed by PictureTel Corporation (acquired by Polycom, Inc. in 2001). [1] There are three Siren codecs: Siren 7, Siren 14 and Siren 22.

  3. File:Federal Signal RSH-10 Thunderbeam video.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Federal_Signal_RSH-10...

    Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

  4. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    10 and 15 HP models were nearly the same, aside from motor used. The P-50 was and still is the loudest dual tone siren in the world. The P-15 (Single-tone) and P-50 were still being produced by ASC until 2002 and 2007, under different names (P-15 being the RM-127 and the P-50 being the RM-135/T-135 AC). The PN-20 was the last siren made by ACA.

  5. The best tablets for seniors in 2025, tested and reviewed - AOL

    www.aol.com/lifestyle/best-tablets-for-seniors...

    Windows: Microsoft has designed their desktop computer operating system to also run on tablets and hybrid computers (a computer that can transform from a laptop into a tablet.) The good news about ...

  6. G.722.1 - Wikipedia

    en.wikipedia.org/wiki/G.722.1

    G.722.1 Annex C (or G.722.1C) is a low-complexity extension mode to G.722.1, which doubles the algorithm to permit 14 kHz audio bandwidth using a 32 kHz audio sample rate, at 24, 32, and 48 kbit/s. It is included in the official ITU-T Recommendation G.722.1. The name of this annex is Annex C – 14 kHz mode at 24, 32, and 48 kbit/s. [5]

  7. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    A Federal Signal Modulator siren in Bay Head, New Jersey. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified ...

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