Boundary microphone
First Claim
Patent Images
1. A boundary microphone comprising:
- a base made of metal;
a cover that is made of metal and has a plurality of holes through which a sound wave is guided;
a plurality of microphone units each of which converts sound into an electric signal; and
a plurality of microphone unit holders slidably provided on the base, each of which holds a microphone unit of the plurality of microphone units, whereineach of the microphone unit holders has a knob,the base has a plurality of slot shaped through holes wherein a knob of a microphone unit holder penetrates the base through a through hole of said plurality of through holes, andeach knob and each through hole for each microphone unit holder form a microphone unit position changing unit with which the respective microphone unit holder is movable with the microphone unit by a movement of the knob within a range defined by the through hole, and whereinthe microphone units are radially arranged on the base,the microphone units are disposed at equal angular intervals in the circumferential direction of the base when the microphone unit holders are each positioned at a first end of a corresponding through hole, andthe microphone units are disposed at non-equal angular intervals in the circumferential direction of the base when the microphone unit holders are each positioned at a second end of the corresponding through hole.
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Accused Products
Abstract
A boundary microphone includes: a base made of metal; a cover that is made of metal and has a plurality of holes through which a sound wave is guided; a microphone unit that converts sound into an electric signal; and a microphone unit holder slidably provided on the base and holds the microphone unit. The microphone unit holder has a knob. The base has a hole through which the knob of the microphone unit holder penetrates the base. The knob of the microphone unit holder and the hole of the base are so provided that the microphone unit holder can be moved with the microphone unit by a movement of the knob within a range defined by the hole.
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Citations
11 Claims
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1. A boundary microphone comprising:
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a base made of metal; a cover that is made of metal and has a plurality of holes through which a sound wave is guided; a plurality of microphone units each of which converts sound into an electric signal; and a plurality of microphone unit holders slidably provided on the base, each of which holds a microphone unit of the plurality of microphone units, wherein each of the microphone unit holders has a knob, the base has a plurality of slot shaped through holes wherein a knob of a microphone unit holder penetrates the base through a through hole of said plurality of through holes, and each knob and each through hole for each microphone unit holder form a microphone unit position changing unit with which the respective microphone unit holder is movable with the microphone unit by a movement of the knob within a range defined by the through hole, and wherein the microphone units are radially arranged on the base, the microphone units are disposed at equal angular intervals in the circumferential direction of the base when the microphone unit holders are each positioned at a first end of a corresponding through hole, and the microphone units are disposed at non-equal angular intervals in the circumferential direction of the base when the microphone unit holders are each positioned at a second end of the corresponding through hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification