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  2. Parabolic microphone - Wikipedia

    en.wikipedia.org/wiki/Parabolic_microphone

    A parabolic microphone is a microphone that uses a parabolic reflector to collect and focus sound waves onto a transducer, in much the same way that a parabolic antenna (e.g. satellite dish) does with radio waves. Though they lack high fidelity, parabolic microphones have great sensitivity to sounds coming from one direction, along the axis of ...

  3. Microphone practice - Wikipedia

    en.wikipedia.org/wiki/Microphone_practice

    In room miking a distant mic, referred to as the room mic, is used in conjunction with a close mic, "typically placed far enough past the critical distance in a room that the room's ambience and reverberations transduce at an equivalent, if not greater, volume than the sound source itself."

  4. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    A microphone, colloquially called a mic (/ m aɪ k /), [1] or mike, [a] is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones , hearing aids , public address systems for concert halls and public events, motion picture production, live and recorded audio engineering , sound ...

  5. Artillery sound ranging - Wikipedia

    en.wikipedia.org/wiki/Artillery_sound_ranging

    Assuming the artillery is far away and using the asymptotes of the hyperbolas, which are lines, to find an approximate location of the artillery. [4] A curvature correction could then be applied to get a more accurate bearing. [5] Approximate solutions can be generated using sets of metal disks whose radii differ by small increments.

  6. ORTF stereo technique - Wikipedia

    en.wikipedia.org/wiki/ORTF_stereo_technique

    Since the cardioid polar pattern rejects off-axis sound, less of the ambient room characteristics are picked up. This means the mics can be placed further away from the sound sources, resulting in a blend that may be more appealing. Furthermore, the availability of purpose-built microphone mounts makes ORTF easy to achieve.

  7. Laser microphone - Wikipedia

    en.wikipedia.org/wiki/Laser_microphone

    On 25 August 2009, U.S. patent 7,580,533 was issued for a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air ("Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path"). Sound pressure waves cause disturbances in the smoke that in ...

  8. Audio-to-video synchronization - Wikipedia

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

    The AV-sync delay is normally fixed. External AV-sync errors can occur if a microphone is placed far away from the sound source, the audio will be out of sync because the speed of sound is much lower than the speed of light. If the sound source is 340 meters from the microphone, then the sound arrives approximately 1 second later than the light.

  9. Microphone array - Wikipedia

    en.wikipedia.org/wiki/Microphone_array

    A gunfire locator using a microphone array. A microphone array is any number of microphones operating in tandem. There are many applications: Systems for extracting voice input from ambient noise (notably telephones, speech recognition systems, hearing aids) Surround sound and related technologies; Binaural recording

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