Voice input apparatus
First Claim
1. A voice input apparatus comprising:
- a first housing; and
a microphone unit which is disposed in the inside of the first housing;
wherein the microphone unit includes;
a second housing located under the first housing in a vertical direction, in which a first sound hole and a second sound hole are formed;
a diaphragm which is disposed in the inside of the second housing; and
an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm,wherein, in the first housing, a first opening portion which communicates with the first sound hole and a second opening portion which communicates with the second sound hole are formed;
a first sound guide space which guides a sound outside the first housing from the first opening portion to a first surface of the diaphragm and a second sound guide space which guides a sound outside the first housing from the second opening portion to a second surface of the diaphragm, that is, an opposite surface of the first surface of the diaphragm is formed;
the electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and
an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed.
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Accused Products
Abstract
A microphone unit is disposed in the inside of a first housing of a voice input apparatus. The microphone unit includes: a second housing; a diaphragm which is disposed in the inside of the second housing; and an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm. In the voice input apparatus, a first sound guide space which guides a sound outside the first housing to a first surface of the diaphragm and a second sound guide space which guides a sound outside the first housing to a second surface of the diaphragm are formed. The electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed.
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Citations
12 Claims
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1. A voice input apparatus comprising:
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a first housing; and a microphone unit which is disposed in the inside of the first housing; wherein the microphone unit includes;
a second housing located under the first housing in a vertical direction, in which a first sound hole and a second sound hole are formed;
a diaphragm which is disposed in the inside of the second housing; and
an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm,wherein, in the first housing, a first opening portion which communicates with the first sound hole and a second opening portion which communicates with the second sound hole are formed;
a first sound guide space which guides a sound outside the first housing from the first opening portion to a first surface of the diaphragm and a second sound guide space which guides a sound outside the first housing from the second opening portion to a second surface of the diaphragm, that is, an opposite surface of the first surface of the diaphragm is formed;the electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification