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- A graph of the directional characteristics of a microphone or loudspeaker.
- The graphical representation of the directionality of a microphone or speaker. A graph of a microphone's output as a constant level source is moved around the microphone in a single plane or of a speaker's constant level output as a test microphone is moved around it. Source: Church Audio & Acoustics Glossary
Sponsor: ISO 12231:2012 Standard