Patent ID: 9596533
Date: 2017-03-14
CPC Classifications: H04R

Claim:
1. A unidirectional close-talking microphone comprising: a microphone unit comprising a front sound-collecting segment and a rear sound-collecting segment; and a microphone cap attachable to the outer circumference of the microphone unit, the microphone cap comprising a plurality of sound-collecting holes on a side face, a relative position between the microphone cap and the microphone unit being switchable between a first position and a second position along a central axis, the sound-collecting holes being disposed on opposite sides of the central axis at different positions along the central axis, the rear sound-collecting segment being in communication with outside of the microphone cap through the sound-collecting holes in the microphone cap when the microphone cap resides at the first position, part of the rear sound-collecting segment being covered with the microphone cap when the microphone cap resides at the second position, and an acoustic resistor configured to cover a front face of the microphone cap.