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A microphone in which deformation of a piezoelectric bar by the action of sound waves or mechanical vibrations generates the output voltage between the faces of the bar. Also known as piezoelectric microphone.

Related Terms

COMPRESSOR

A device which converts mechanical force and motion into pneumatic flow power.

ALTERNATOR

A device which converts mechanical energy, into alternating current.

ACOUSTIC

A term pertaining to sound, or the science of sound.

AMBIENT NOISE

The normal sound in a room or other location.

ADIABATIC EFFICIENCY

The ratio of actual work output of a heat engine to the ideal output.

AIRBORNE SOUND

Sound which reaches the point of interest by radiation through the air.

BRINELLING

Permanent deformation of the bearing surfaces where the rollers (or balls) contact the races. Brinelling results from excessive load or impact on stationary bearings. It is a form of mechanical damage in which metal is displaced or upset without attrition.

PUMP

A device which converts mechanical force and motion into hydraulic fluid power.

FILTRATION

The physical or mechanical process of separating insoluble particulate matter from a fluid, such as air or liquid, by passing the fluid through a filter medium that will not allow the particulates to pass through it.

BIAS

The output plus (or minus) some arbitrary value.
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