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Cardioid Microphone Pattern

Cardioid Microphone Pattern: The heart-shaped area that defines where a cardioid microphone is designed to pick up sound. The cardioid pattern itself is what results from tracing the path of a point on one fixed circle as it rotates around another fixed circle. Used mostly in recording vocals and speech, because the cardioid pattern accepts sound far more readily from the front rather than from surrounding inputs. [ Audio Glossary ]

Image Source: http://en.wikipedia.org/wiki/File:Polar_pattern_cardioid.png

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