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  2. Covert listening device - Wikipedia

    en.wikipedia.org/wiki/Covert_listening_device

    It consisted of a microphone in one location and a remote listening post with a speaker that could also be recorded using a phonograph. While also marketed as a device that allowed broadcasting of sounds, or dictating text from one room to a typist in another, it was used in several criminal investigations.

  3. Echo suppression and cancellation - Wikipedia

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

    Installed conference room systems which use ceiling speakers and microphones on the table; Physical coupling where vibrations of the loudspeaker transfer to the microphone via the handset casing; In some of these cases, sound from the loudspeaker enters the microphone almost unaltered.

  4. Sound reinforcement system - Wikipedia

    en.wikipedia.org/wiki/Sound_reinforcement_system

    Speakers may need to be unobtrusive to blend in with antique woodwork and stonework. In some cases, audio designers have designed custom-painted speaker cabinets. Some facilities, such as sanctuaries or chapels are long rooms with low ceilings and additional fill-in speakers are needed throughout the room to give good coverage. Once installed ...

  5. Wireless microphone - Wikipedia

    en.wikipedia.org/wiki/Wireless_microphone

    A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone , it has a small, battery-powered radio transmitter in the microphone body, which transmits the audio signal from the ...

  6. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    Since a conventional speaker is similar in construction to a dynamic microphone (with a diaphragm, coil and magnet), speakers can actually work "in reverse" as microphones. Reciprocity applies, so the resulting microphone has the same impairments as a single-driver loudspeaker: limited low- and high-end frequency response, poorly controlled ...

  7. Owl Labs - Wikipedia

    en.wikipedia.org/wiki/Owl_Labs

    In 2023, Owl Labs launched "Owl Bar", [14] a front-of-room camera, microphone and speaker video conferencing device that seamlessly connects with a 360-degree camera and audio device. Owl Labs was recognized by the New England Venture Capital Association with a NEVY Award for "Hottest Tech Startup".

  8. 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

  9. Simultaneous interpretation - Wikipedia

    en.wikipedia.org/wiki/Simultaneous_interpretation

    The speaker talks into a microphone. His or her speech is broadcast to the interpreter who sits in a sound-proof interpreter booth and listens through headphones. As the interpreter listens to the speech, he or she translates it in real-time into a microphone. The interpretation is transmitted wirelessly to the headphones of the event attendees.

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