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Boundary microphone

A small omnidirectional condenser mic capsule positioned near or flush with a boundary.
Audio Technica Atm87r

A boundary microphone is a small omnidirectional condenser mic capsule positioned near or flush with a boundary (surface). The arrangement provides a directional half-space pickup pattern while delivering a relatively phase-coherent output signal.

The boundary microphone can be used as a piano mic or on hockey boards for body check sound effects. It is also commonly used to record full room sound by being mounted on a wall. When used to record a soloist or small musical ensemble along with the room acoustics, a boundary microphone prevents phase interference between direct and reflected sound, resulting in a natural sound with a flatter frequency response than can be obtained with a stand-mounted microphone at the same distance (explanation below).

Key Terms

arrangement
boundary microphone
definition
directional half space pickup pattern
hockey boards body check sound effects
phase coherent output signal
piano mic
small omnidirectional condenser mic capsule
surface
usage

Additional Resources

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Acronymn

(none found)

Synonymns

Boundary microphone
Pressure zone microphone

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Sources & Credits

Last modified on September 25 2019
Content adapted from Wikipedia
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