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  2. Sound test - Wikipedia

    en.wikipedia.org/wiki/Sound_test

    A sound test is a function built into the options screen of many video games.This function was originally meant to test whether the game's music and sounds would function correctly (hence the name), as well as giving the player the ability to compare samples played in Monaural, Stereophonic and later Surround sound.

  3. Fix issues with AOL Mail image challenges - AOL Help

    help.aol.com/articles/what-should-i-do-if-i-get...

    If you can't see the image, make sure your browser preferences are set to display images and try again. Alternatively, you can listen to the image challenge by clicking on the audio icon. Display images in Edge Display images in Safari Display images in Firefox Display images in Google Chrome Display images in Internet Explorer

  4. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    A CAPTCHA (/ ˈ k æ p. tʃ ə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [ 1 ] The term was coined in 2003 by Luis von Ahn , Manuel Blum , Nicholas J. Hopper, and John Langford . [ 2 ]

  5. Audio-to-video synchronization - Wikipedia

    en.wikipedia.org/wiki/Audio-to-video_synchronization

    Presentation time stamps (PTS) are embedded in MPEG transport streams to precisely signal when each audio and video segment is to be presented and avoid AV-sync errors. . However, these timestamps are often added after the video undergoes frame synchronization, format conversion and preprocessing, and thus the lip sync errors created by these operations will not be corrected by the addition ...

  6. Steam (service) - Wikipedia

    en.wikipedia.org/wiki/Steam_(service)

    The Steam Workshop is a service that allows users to share user-made content and modifications for video games available on Steam. New levels, art assets, gameplay modifications, or other content may be published to or installed from the Workshop depending on the title.

  7. reCAPTCHA - Wikipedia

    en.wikipedia.org/wiki/I'm_not_a_robot

    reCAPTCHA Inc. [1] is a CAPTCHA system owned by Google.It enables web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images.

  8. Spamming - Wikipedia

    en.wikipedia.org/wiki/Spamming

    An email inbox containing a large amount of spam messages. Spamming is the use of messaging systems to send multiple unsolicited messages (spam) to large numbers of recipients for the purpose of commercial advertising, non-commercial proselytizing, or any prohibited purpose (especially phishing), or simply repeatedly sending the same message to the same user.

  9. Test CD - Wikipedia

    en.wikipedia.org/wiki/Test_CD

    A test CD is a compact disc containing tracks of musical and technical tests and demonstrations. Most of the tracks are made of electronic signals and pure frequencies . The purpose of these specialized compact discs is to make accurate tests and calibrate audio equipment .