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Take you to understand the microphone directivity knowledge.

Author:admin   AddTime:2021-07-28

The directivity of a microphone is a description of the microphone's pattern of sound inspiration from all directions in space, and is an important attribute of the microphone. In many cases, the first consideration in the selection of a microphone is its directivity, followed by other properties of the microphone.

1. Cardioid directivity: Through the small hole behind the microphone cavity, the diaphragm receives pressure from both sides. Therefore, the diaphragm is not the same in different directions, and the microphone has directivity.



2. Super-cardioid directivity: The pickup area is narrower than the cardioid, which can eliminate surrounding noise more effectively. It is especially suitable for close-range pickup, such as fixed-point recording of drums and pianos.
3. Omnidirectionality: The sensitivity is basically the same for sounds from different angles. The microphone head is designed based on the principle of pressure-operated, and the diaphragm only accepts pressure from the outside. It is common in recording projects that need to record the entire environment sound; or when the sound source is moving, and it is hoped to maintain good reception; the lavalier microphone that the speaker wears when giving a speech also belongs to this type.
4. Figure 8 or Bi-directional: The sound ability of Figure 8 or Bi-directional before and after pickup is almost the same, but the sound on both sides is not recorded. The frequency response is usually better on the front than on the back, so the front is generally heard It looks brighter.

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