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  2. Electrolarynx - Wikipedia

    en.wikipedia.org/wiki/Electrolarynx

    The most common device is a handheld, battery-operated device pressed against the skin under the mandible which produces vibrations to allow speech; [1] other variations include a device similar to the "talk box" electronic music device, which delivers the basis of the speech sound via a tube placed in the mouth. [2]

  3. AlterEgo - Wikipedia

    en.wikipedia.org/wiki/AlterEgo

    The AlterEgo was designed by Arnav Kapur, a graduate student at MIT, [4] and became public in 2018. The device was designed to help people with speech disabilities. [5] In 2018, the device was presented at the Conference on Intelligent User Interfaces where the research team reported a 92% median word accuracy rate.

  4. Speech-generating device - Wikipedia

    en.wikipedia.org/wiki/Speech-generating_device

    Stephen Hawking (1942–2018), astrophysicist and prominent SGD user. Speech-generating devices (SGDs), also known as voice output communication aids, are electronic augmentative and alternative communication (AAC) systems used to supplement or replace speech or writing for individuals with severe speech impairments, enabling them to verbally communicate. [1]

  5. Teleprompter - Wikipedia

    en.wikipedia.org/wiki/Teleprompter

    A peripheral device attached has a knob that can be turned to speed up, slow down, or even reverse the scrolling of the text. The text is usually displayed in white letters on a black background for the best readability, while cues are in inverse video (black on white).

  6. Megaphone - Wikipedia

    en.wikipedia.org/wiki/Megaphone

    More than twenty years earlier, Kircher had described a device that could be used as both a megaphone and for "overhearing" people speaking outside a house. His coiled horn would be mounted into the side of a building, with a narrow end inside that could be either spoken into or listened to, and the wide mouth projecting through the outside wall.

  7. Stenomask - Wikipedia

    en.wikipedia.org/wiki/Stenomask

    Court reporter tests his stenomask. [1]A stenomask is a hand-held microphone built into a padded, soundproof enclosure that fits over the speaker's mouth or nose and mouth. . Some lightweight versions may be fitted with an elastic neck strap to hold them in place while freeing the user's hands for other tas