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  2. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    The condenser microphone, invented at Western Electric in 1916 by E. C. Wente, [22] is also called a capacitor microphone or electrostatic microphone—capacitors were historically called condensers. The diaphragm acts as one plate of a capacitor, and audio vibrations produce changes in the distance between the plates.

  3. Electret microphone - Wikipedia

    en.wikipedia.org/wiki/Electret_microphone

    An electret microphone is a microphone whose diaphragm forms a capacitor (historically-termed a condenser) that incorporates an electret. The electret's permanent electric dipole provides a constant charge Q on the capacitor.

  4. Valve microphone - Wikipedia

    en.wikipedia.org/wiki/Valve_microphone

    The U47 was the first condenser microphone switchable between cardioid and omni-directional pick-up patterns. It incorporated the highly successful 12- micron -thick M7 capsule and VF-14 tube amplifier, which was a metal-clad pre-World War II pentode changed to work as a triode .

  5. Boundary microphone - Wikipedia

    en.wikipedia.org/wiki/Boundary_microphone

    A boundary microphone (or pressure zone microphone) is one or more small omnidirectional or cardioid condenser mic capsule(s) positioned near or flush with a boundary (surface) such as a floor, table, or wall. The capsule(s) is/are typically mounted in a flat plate or housing.

  6. Diaphragm (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Diaphragm_(acoustics)

    Microphones can be thought of as speakers in reverse. The sound waves strike the thin diaphragm, causing it to vibrate. [1] Microphone diaphragms, unlike speaker diaphragms, tend to be thin and flexible, since they need to absorb as much sound as possible. In a condenser microphone, the diaphragm is placed in front of a plate and is charged. [2]

  7. Phantom power - Wikipedia

    en.wikipedia.org/wiki/Phantom_Power

    Some condenser microphones can be powered with a 1.5-volt cell contained in a small compartment in the microphone or in an external housing. Phantom power is sometimes used by workers in avionics to describe the DC bias voltage used to power aviation microphones, which use a lower voltage than professional audio microphones.

  8. Sound level meter - Wikipedia

    en.wikipedia.org/wiki/Sound_level_meter

    It is commonly a hand-held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability. [1] The diaphragm of the microphone responds to changes in air pressure caused by sound waves. That is why the instrument is sometimes referred to as a ...

  9. Category:Condenser microphones - Wikipedia

    en.wikipedia.org/wiki/Category:Condenser_microphones

    Pages in category "Condenser microphones" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. E. Electret microphone; U.