Collapsible image derived differential microphone
First Claim
1. An acoustic signal receiving apparatus comprisinga housing having an acoustically reflecting surface;
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Accused Products
Abstract
An acoustic signal receiving apparatus comprising a housing having an acoustically reflecting surface and a directional acoustic sensor unit having first-order gradient characteristics. The sensor unit is coupled to the housing with use of a retractable member having a retracted position and an extended position. When the member is extended, the sensor unit is positioned relative to the reflecting surface such that the acoustic interaction between the sensor unit and the reflecting surface causes the output of the sensor unit to have second-order gradient response characteristics. In accordance with one illustrative embodiment, in a notebook computer with a "flip-back" lid, the sensor element automatically extends to the desired position when the lid is opened, and automatically retracts to be flush with the housing surface when the lid is closed.
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Citations
30 Claims
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1. An acoustic signal receiving apparatus comprising
a housing having an acoustically reflecting surface; - and
a directional acoustic sensor unit having a first-order gradient response characteristic, the sensor unit mechanically coupled to the housing with use of a retractable member having a retracted position and an extended position, such that, when the member is in the extended position, the sensor unit is positioned relative to the reflecting surface wherein acoustic interaction between the sensor unit and the reflecting surface causes an output of the sensor unit to have a second-order gradient response characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A portable computing device comprising
a processor; -
input device which provides input to the processor from a user; an output device which provides output from the processor to the user; a housing having an acoustically reflecting surface; and a directional acoustic sensor unit having first-order gradient response characteristics, the sensor unit mechanically coupled to the housing with use of a retractable member having a retracted position and an extended position, such that, when the member is in the extended position, the sensor unit is positioned relative to the reflecting surface whereby acoustic interaction between the sensor unit and the reflecting surface causes an output of the sensor unit to have a second-order gradient response characteristic.
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Specification