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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. Phantom circuit - Wikipedia

    en.wikipedia.org/wiki/Phantom_circuit

    Condenser microphones have impedance converter (current amplifier) circuitry that requires powering; in addition, the capsule of any non-electret, non-RF condenser microphone requires a polarizing voltage to be applied. Since the mid- to late 1960s most balanced, professional condenser microphones for recording and broadcast have used phantom ...

  5. File:Electret condenser microphone schematic.svg - Wikipedia

    en.wikipedia.org/wiki/File:Electret_condenser...

    English: A typical electret microphone preamp circuit uses a FET in a common source configuration. The two-terminal electret capsule contains an FET which must be externally powered by supply voltage V +. The resistor sets the gain and output impedance. The audio signal appears at the output, after a DC-blocking capacitor.

  6. 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.

  7. Boundary microphone - Wikipedia

    en.wikipedia.org/wiki/Boundary_microphone

    Two examples of different boundary mics (top) and a diagram of the elements of a boundary microphone. The diagram shows the location of the mic capsule, the plate, the aperture, and the pressure zone. In 1978, audio engineers Ed Long and Ron Wickersham studied the effects of the boundary layer in sound recording.

  8. Diaphragm (acoustics) - Wikipedia

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

    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] In a dynamic microphone, the diaphragm is glued to a magnetic coil, similar to the one in a dynamic loudspeaker.

  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.