Cardioid Microphone: Uni-directional Nature
A cardioid microphone is defined by its pickup pattern, shaped like a heart.
- This pattern means the microphone is most sensitive to sounds coming from the front.
- It significantly reduces the sensitivity to sounds coming from the rear.
Because it primarily captures sound from only one direction, the cardioid microphone is classified as a uni-directional microphone.
Distinguishing Microphone Patterns
Understanding the different pickup patterns helps distinguish:
- Omni-directional: Captures sound equally from all directions.
- Bidirectional: Captures sound equally from the front and the back.
- Uni-directional: Captures sound predominantly from a single direction (like the cardioid pattern).
- Gun Microphone: Refers to a highly directional shotgun microphone, a subtype of uni-directional, but "cardioid" specifically describes the heart-shaped pattern.
The cardioid's sensitivity profile fits the definition of a uni-directional microphone.
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