Microphone Specifications (1)

Microphone Polar Patterns

The Music Telegraph | Text 2018/12/17 [13:08]

Microphone Specifications (1)

Microphone Polar Patterns

The Music Telegraph| 입력 : 2018/12/17 [13:08]

 

▲ © AIST

 

 

Microphone Specifications (1)

 

 

1. Type:

- Moving coil (Dynamic Mic), Ribbon, Condenser

 

 

 

2. Acoustic operating principle

*Pressure: pressure gradient (difference) 'up/down' movement

 

a) Pressure transducer, pressure receptor or pressure Mic:

- Reacts to any change in air pressure around it

e.g. Omni-Directional Mic

 

b) Pressure gradient transducer, receptor or Mic:

- Reacts to differences in air pressure upon the two faces of a diaphragm or ribbon

e.g. A directional Mic (Cardioid, Bi-Directional Mic)

 

 

 

3. Directional pick-up

- The polar pattern graph

 

▲ Omni = All around pick-up

Cardioid = Uni-Directional pick-up

© batera.com.br

 

 

 

[side trip]

High frequency sound —> 'directional' 

Low frequency sound —> 'scattered'

 

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