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  2. Doorbell - Wikipedia

    en.wikipedia.org/wiki/Doorbell

    Doorbell at the entrance of Chetham's Library, Manchester, England Sound of a two-tone mechanical doorbell. A doorbell is a signaling device typically placed near a door to a building's entrance. When a visitor presses a button, the bell rings inside the building, alerting the occupant to the presence of the visitor. Although the first ...

  3. Electric bell - Wikipedia

    en.wikipedia.org/wiki/Electric_bell

    The most widely used form is the interrupter bell, which is a mechanical bell that produces a continuous sound when current is applied. See animation, above. The bell or gong (B), which is often in the shape of a cup or half-sphere, is struck by a spring-loaded arm (A) with a metal ball on the end called a clapper, actuated by an electromagnet ...

  4. Wikipedia:Reference desk/Archives/Entertainment/2008 July 23

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    There is a "doorbell" sound when anyone on one side of a door on the series attempts to get the attention of the person on the other side. It's 3 mid-pitch tones followed by a high-pitched tone. This sound seem very familiar to me from somewhere else, possibly a video game.

  5. 15 things to spend your Amazon gift card on - AOL

    www.aol.com/lifestyle/15-things-to-spend-your...

    A video doorbell is an excellent security tool, allowing you to see who's at your front door whether you're home or not. It can detect humans, pets, package delivery and more.

  6. Chime sound was key to company success, Ring smart doorbell ...

    www.aol.com/chime-sound-key-company-success...

    Jamie Siminoff said getting the sound of Ring’s video doorbell chime right was vital to establishing the smart security firm’s brand.

  7. Sound recognition - Wikipedia

    en.wikipedia.org/wiki/Sound_recognition

    Sound recognition is a technology, which is based on both traditional pattern recognition theories and audio signal analysis methods. Sound recognition technologies contain preliminary data processing, feature extraction and classification algorithms. Sound recognition can classify feature vectors.

  8. How to make smart doorbells play Halloween sounds - AOL

    www.aol.com/news/smart-doorbells-play-halloween...

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  9. Sound effect - Wikipedia

    en.wikipedia.org/wiki/Sound_effect

    A sound effect (or audio effect) is an artificially created or enhanced sound, or sound process used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media.