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Consumer Electronics by S. P. Bali

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DUAL-UNIT MICROPHONES

Microphones are available which make use of two units to secure a particular directional pattern. A dynamic unit is often combined with a ribbon unit. Fig. 2.25 shows the directional pattern which results when a bidirectional velocity unit and a nondirectional dynamic unit are combined.

The resultant directivity pattern is a cardioid. Other units are also combined to secure specific directivity patterns.

 

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Fig. 2.25 Directivity pattern of a dual-unit microphone

 

A superb combination from Sennheiser is shown in Fig. 2.26. The MKH 30 is a pressure gradient microphone with a figure-of-eight directivity, optimising wide ...

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