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  2. Wikipedia:Free sound resources - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Free_sound_resources

    Independent, unique sound library with royalty free & free sound effects - for video, sound design, music productions and more. CC0, CC BY Gfx Sounds: Yes Yes Sound library for professional and free sound effects downloads. CC0, CC BY Free To Use Sounds: Yes Yes Sound effects library with hiqh quality field recordings from all around the world.

  3. Pixabay - Wikipedia

    en.wikipedia.org/wiki/Pixabay

    Pixabay.com is a free stock photography and royalty-free stock media website. It is used for sharing photos, illustrations, vector graphics, film footage, stock music and sound effects, exclusively under the custom Pixabay Content License, which generally allows the free use of the material with some restrictions.

  4. Siren (alarm) - Wikipedia

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

    However, sirens are designed to sweep the frequency of their sound output, typically, no less than one octave. This sweeping minimizes the effects of phase cancellation. The result is that the average sound output from a dual speaker siren system is 3 dB greater than a single speaker system.

  5. APCO radiotelephony spelling alphabet - Wikipedia

    en.wikipedia.org/wiki/APCO_radiotelephony...

    The APCO phonetic alphabet, a.k.a. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International [1] from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and ...

  6. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Not used - incidents are graded as normal that do not depend upon a timely police response. L: Low Priority: Not used - incidents graded as low that do not depend upon a timely police response and may be resolved by phone or pre-arranged appointment. NA: Non-attendance: Not used, no police attendance required.

  7. 40 Best New Year's Sales to Shop, According to Bazaar Editors

    www.aol.com/22-best-end-sales-shop-140000844.html

    We found the best end-of-year, Boxing Week, and New Year's sales on fashion, beauty, and home. Score up to 70 off at stores like Nordstrom, Alo, and more.