Boundary Microphone
From WikiRecording
What is a Boundary Microphone?
A boundary microphone has a hemispheric polar pattern (a half-sphere).
Using an Omnidirectional microphone as a Boundary Microphone
An omnidirectional microphone set against a flat surface is a boundary microphone. A boundary microphone will pick up the ambient sound of a room without exhibiting the phase effects that happen when a nearby surface reflects sound and either cancels or amplifies elements of the waveform.
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