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  2. Automatic Warning System - Wikipedia

    en.wikipedia.org/wiki/Automatic_Warning_System

    An AWS visual indicator (known as the 'sunflower') An AWS audible indicator (capable of producing two different sounds, clear indication sound = bell, warning indication sound = 'horn', or electronic equivalents) An AWS Acknowledge button (used to acknowledge the audible AWS warning indication.

  3. Auditory imagery - Wikipedia

    en.wikipedia.org/wiki/Auditory_imagery

    The accuracy of tempo within an auditory image usually suffers when recalled; however, the consistency of a person's perception of tempo is preserved. When surveying subject's auditory imagery, their sense of tempo usually stays within 8% of the original tempo heard in a song that the subject heard at some point in the past. [1]

  4. Music streaming service - Wikipedia

    en.wikipedia.org/wiki/Music_streaming_service

    In December 2001, Rhapsody was launched by the startup Listen.com, becoming the first service to offer subscription-based streaming access to a library of music online. [15] Initially limited to content from independent labels such as Naxos, it later reached agreements to stream music from the "big five" major labels. [16]

  5. Acoustic fingerprint - Wikipedia

    en.wikipedia.org/wiki/Acoustic_fingerprint

    An acoustic fingerprint is a condensed digital summary, a digital fingerprint, deterministically generated from an audio signal, that can be used to identify an audio sample or quickly locate similar items in a music database. [1]

  6. Music visualization - Wikipedia

    en.wikipedia.org/wiki/Music_visualization

    The first electronic music visualizer was the Atari Video Music introduced by Atari Inc. in 1977, and designed by the initiator of the home version of Pong, Robert Brown. The idea was to create a visual exploration that could be implemented into a Hi-Fi stereo system. [1] In the United Kingdom music visualization was first pioneered by Fred Judd.

  7. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    The word alarm comes from the Old French a l'arme meaning "to the arms", or "to the weapons", telling armed men to pick up their weapons and get ready for action because an enemy may have suddenly appeared. [1] The word alarum is an archaic form of alarm. It was sometimes used as a call to arms in the stage directions of Elizabethan dramas. [2]

  8. Visual radio - Wikipedia

    en.wikipedia.org/wiki/Visual_Radio

    A Visual Radio client application on the mobile phone, that displays the interactive visual channel and takes care of user interaction. The Visual Radio concept was created by Nokia and the platform was originally offered to radio stations and operators globally by HP. Since October 2007, Nokia has been collaborating with RCS Inc., of New York ...

  9. Optical sound - Wikipedia

    en.wikipedia.org/wiki/Optical_sound

    As the first professionally produced feature with an optical soundtrack, it included mostly music and sound effects, with a very few unsynchronized words. After 1931, Fox's feature film production moved to a two-machine system which Western Electric had developed from the RCA Photophone, with the advent of a light-valve invented by Edward C. Wente.