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  2. Echo suppression and cancellation - Wikipedia

    en.wikipedia.org/wiki/Echo_suppression_and...

    Negative indicate the echo is stronger than the original signal, which if left unchecked would cause audio feedback. The performance of an echo canceller is measured in echo return loss enhancement (ERLE), [3] [9] which is the amount of additional signal loss applied by the echo canceller. Most echo cancellers are able to apply 18 to 35 dB ERLE.

  3. Echo (communications protocol) - Wikipedia

    en.wikipedia.org/wiki/Echo_(communications_protocol)

    The Adaptive Echo distributes messages to parties that have shown awareness of a secret token. The graphic at the side shows the communication example of Hansel and Gretel. Referring to the old fairy tale, both highlight the trees with either "white pebbles" or "bread crumbs" to discover each other in the forest.

  4. Select and enable a New Mail notification in AOL Mail

    help.aol.com/articles/select-and-enable-a-new...

    1. Click the Settings icon | select More Settings. 2. Click Notifications. 3. Under "New Mail," select your notification option: • Play a sound when new mail arrives - Default sound. • Play "You've Got Mail" when new mail arrives - Customize it with a celebrity voice. 4. Click Back to Inbox when done.

  5. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    They transport media streams using special media delivery protocols that encode audio and video with audio codecs and video codecs. Various codecs exist that optimize the media stream based on application requirements and network bandwidth; some implementations rely on narrowband and compressed speech , while others support high-fidelity stereo ...

  6. Audio headset - Wikipedia

    en.wikipedia.org/wiki/Audio_headset

    The lifter allows cordless headsets to be used remotely with such phones. The phone user presses the appropriate headset button to either answer a call or terminate a call. The headset's base station's interface with the handset lifter will take the appropriate action - lift or replace the handset. [2]

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  8. Comparison of user features of messaging platforms - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_user...

    Comparison of user features of messaging platforms refers to a comparison of all the various user features of various electronic instant messaging platforms. This includes a wide variety of resources; it includes standalone apps, platforms within websites, computer software, and various internal functions available on specific devices, such as iMessage for iPhones.

  9. Echo (computing) - Wikipedia

    en.wikipedia.org/wiki/Echo_(computing)

    Most terminal emulator programs have the ability to perform echo locally (which sometimes they misname "half-duplex"): [17] In the C-Kermit terminal emulator program, local echo is controlled by the SET TERMINAL ECHO command, which can be either SET TERMINAL ECHO LOCAL (which enables local echoing within the terminal emulator program itself) or SET TERMINAL ECHO REMOTE (where disables local ...