Dual-diaphragm condenser capsules are commonly used in popular multi-pattern microphones, as well assome single pattern unidirectional designs. These capsules react much differently to sound sources than singlediaphragmcapsules in the frequency range up to approximately 1 kHz. As a method of developing intuition,frequency response and directionality as a function of distance from the sound source are demonstrated using asimple model. Pop sensitivity and multi-pattern operation are also investigated. Comparisons and conclusions arevalidated with measurements made on physical microphones.
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