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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.
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.
The ceramic EIA Class 2 dielectrics used in high-κ capacitors ("Z5U" and "X7R") are piezoelectric and directly transform mechanical vibration into a voltage in exactly the same way as a ceramic or piezoelectric microphone. [5] Film capacitors using soft (mechanically compliant) dielectric materials can also be microphonic due to vibrational ...
The transient generated when a microphone is hot-plugged into an input with active phantom power can damage the microphone and possibly the preamp circuit of the input [10] because not all pins of the microphone connector make contact at the same time, and there is an instant when current can flow to charge the capacitance of the cable from one ...
In the middle of the cavity was a mushroom-shaped flat-faced tuning post, with its top adjustable to make it possible to set the membrane-post distance; the membrane and the post formed a variable capacitor acting as a condenser microphone and providing amplitude modulation (AM), with parasitic frequency modulation (FM) for the re-radiated ...
A valve microphone is a condenser microphone which uses a valve amplifier rather than a transistor circuit. [1] The Neumann U47 valve microphone. History
For example, the letter R is a reference prefix for the resistors of an assembly, C for capacitors, K for relays. ... MK, MIC: Microphone: MP:
Capacitor, formerly called a condenser, an electrical device that stores energy; Condenser microphone, a capacitor-based microphone that converts sound waves into an electrical signal; Synchronous condenser, a rotating machine similar to a motor, used to control AC power flow in electric power transmission
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