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  2. Lavalier microphone - Wikipedia

    en.wikipedia.org/wiki/Lavalier_microphone

    The cord may be hidden by clothes and either run to a radio frequency transmitter kept in a pocket or clipped to a belt, or routed directly to the mixer or a recording device. These miniature microphones are often supplied with a choice of push-on grills of differing lengths that provide gentle high-frequency boost by forming a resonant cavity.

  3. Covert listening device - Wikipedia

    en.wikipedia.org/wiki/Covert_listening_device

    The act of "wearing a wire" refers to a person knowingly recording the conversation or transmitting the contents of a conversation to a police listening post. Usually, some sort of device is attached to the body in an inconspicuous way, such as taping a microphone wire to their chest.

  4. RCA Type 44 - Wikipedia

    en.wikipedia.org/wiki/RCA_Type_44

    RCA Type 44-BX ribbon microphone from 1940 used by CBS. Dr. Harry F. Olson began working for RCA Laboratories, where he developed ribbon microphones, first with field coils and then with permanent magnets, resulting in the first ribbon microphones with bi-directional pickup pattern, the RCA Photophone PB-17 and PB-31, introduced in 1931.

  5. The best mobile microphones for 2025 - AOL

    www.aol.com/news/best-mobile-microphones-for...

    If you’ve ever tried recording audio on your phone and found it sounding muffled or full of background noise, you’re not alone. Built-in microphones are fine for quick calls, but when it comes ...

  6. ORTF stereo technique - Wikipedia

    en.wikipedia.org/wiki/ORTF_stereo_technique

    ORTF setup. The ORTF stereo technique, also known as side-other-side, is a microphone technique used to record stereo sound.It was devised around 1960 at the now-defunct Office de Radiodiffusion Télévision Française (ORTF).

  7. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    The modulated light is then transmitted over a second optical fiber to a photodetector, which transforms the intensity-modulated light into analog or digital audio for transmission or recording. Fiber-optic microphones possess high dynamic and frequency range, similar to the best high fidelity conventional microphones.

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