BOUNDARY MICROPHONE AND BOUNDARY MICROPHONE ADAPTER

摘要

A boundary microphone that can reduce the change in its directional property caused by change of a sound collection axis of a microphone unit is provided. The boundary microphone includes a unidirectional microphone unit, a cylindrical unit holding member having a unit accommodating pocket in its peripheral surface to accommodate the unidirectional microphone unit, and a boundary plate to which top face the unit holding member is attached so as to rotate about its axis. When the unidirectional microphone unit is held in the unit holding member, a front acoustic terminal is positioned to face the outside of the peripheral surface of the unit holding member, the sound collection axis intersects the axis of a hollow of the unit holding member, and a rear acoustic terminal communicates with the outside at both side ends of the hollow via the hollow of the unit holding member.

主权项

1. A boundary microphone comprising:
a unidirectional microphone unit; a unit holding member formed in a cylindrical shape having a unit accommodating pocket in a peripheral surface thereof to accommodate the unidirectional microphone unit; and a boundary plate to which the unit holding member is attached so that an axis of a hollow of the unit holding member is parallel with a top face of the boundary plate and the unit holding member rotates about the axis, wherein the unidirectional microphone unit held in the unit holding member includes a front acoustic terminal facing outside of the peripheral surface of the unit holding member, a sound collection axis intersecting the axis of the hollow of the unit holding member, and a rear acoustic terminal communicating with outside at both side ends of the hollow via the hollow of the unit holding member.