BOUNDARY MICROPHONE AND BOUNDARY PLATE

摘要

A boundary microphone includes a microphone and a boundary plate on which the microphone is placed. The boundary plate includes a porous metal material of an aluminum-based metallic fiber layer clamped by an aluminum-based expanded metal and crimped thereto. The boundary plate has a characteristic of absorbing an incoming sound wave without reflecting the sound wave to the microphone, and the microphone collects a direct sound.

主权项

1. A boundary microphone comprising:
a microphone; and a boundary plate on which the microphone is placed, wherein the boundary plate includes a porous metal material of at least an aluminum-based metallic fiber layer crimped to an aluminum-based expanded metal.