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US 9,544,680 B2Granted
Boundary microphone and boundary plate
AssigneeKabushiki Kaisha Audio-Technica
InventorHiroshi Akino
Life of this patent
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Abstract
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.
Claims7
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.
1 more element
A boundary plate used for a boundary microphone,
- wherein the boundary plate has a microphone placed thereon, absorbs an incoming sound wave without reflecting the sound wave to the microphone, and provides a direct sound to the microphone, and
- the boundary plate includes a porous metal material of at least an aluminum-based metallic fiber layer crimped to an aluminum-based expanded metal.
Dependencies are inferred from the claim text.