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US 12,634,629 B2Granted
Microphone, method for recording an acoustic signal, reproduction apparatus for an acoustic signal or method for reproducing an acoustic signal
AssigneeKaetel Systems GmbH
InventorKlaus Kaetel
Life of this patent
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Abstract
Microphone having: a first partial microphone with a first diaphragm pair having a first diaphragm and a second diaphragm that are arranged opposite each other; and a second partial microphone with a second diaphragm pair having a third diaphragm and a fourth diaphragm that are arranged opposite each other, wherein the first diaphragm pair is arranged such that the first diaphragm and the second diaphragm are deflectable along a first spatial axis, wherein the second diaphragm pair is arranged such that the third diaphragm and the fourth diaphragm are deflectable along a second spatial axis and wherein the second spatial axis differs from the first spatial axis.
Claims11
A microphone, comprising:
- a first partial microphone with a first diaphragm pair comprising a first diaphragm and a second diaphragm that are arranged opposite to each other, wherein the first diaphragm pair is arranged such that the first diaphragm and the second diaphragm are deflectable along a first spatial axis, wherein the first spatial axis comprises an x-direction;
- a second partial microphone with a second diaphragm pair comprising a third diaphragm and a fourth diaphragm that are arranged opposite to each other, wherein the second diaphragm pair is arranged such that the third diaphragm and the fourth diaphragm are deflectable along a second spatial axis, wherein the second spatial axis comprises an y-direction;
- a third partial microphone with a third diaphragm pair comprising a fifth diaphragm and a sixth diaphragm that are arranged opposite to each other, wherein the third diaphragm pair is arranged such that the fifth diaphragm and the sixth diaphragm are deflectable along a third spatial axis, wherein the third spatial axis comprises a z-direction,
- wherein the x-direction, the y-direction and the z-direction are essentially orthogonal to one another,
- wherein the first partial microphone is configured to provide a first diaphragm signal in response to a deflection of the first diaphragm and to provide a second diaphragm signal in response to a deflection of the second diaphragm, wherein the first diaphragm signal and the second diaphragm signal comprise a first phase relation, wherein the first partial microphone is configured to combine the first diaphragm signal and the second diaphragm signal with a modified first phase relation to provide a first differential output signal allocated to the first spatial axis,
- wherein the second partial microphone is configured to provide a third diaphragm signal in response to a deflection of the third diaphragm and to provide a fourth diaphragm signal in response to a deflection of the fourth diaphragm, wherein the third diaphragm signal and the fourth diaphragm signal comprise a second phase relation to one another, and wherein the second partial microphone is configured to combine the third diaphragm signal and the fourth diaphragm signal with a modified second phase relation to provide a second differential output signal allocated to the second spatial axis,
- wherein the third partial microphone is configured to provide a fifth diaphragm signal in response to a deflection of the fifth diaphragm and to provide a sixth diaphragm signal in response to a deflection of a sixth diaphragm, wherein the fifth diaphragm signal and the sixth diaphragm signal comprise a third phase relation, and wherein the third partial microphone is configured to combine the fifth diaphragm signal and the sixth diaphragm signal with a modified third phase relation to provide a third differential output signal allocated to the third spatial axis,
- wherein the third partial microphone is configured to only add the fifth diaphragm signal and the sixth diaphragm signal in the third phase relation to provide a single omnidirectional common mode output signal, and
- wherein the first differential output signal, the second differential output signal, the third differential output signal, and the single omnidirectional common mode output signal form an output of the microphone.
6 more elements
A method for recording an acoustic signal, comprising:
- operating a first partial microphone with a first diaphragm pair comprising a first diaphragm and a second diaphragm that are arranged opposite to each other, wherein the first diaphragm pair is arranged such that the first diaphragm and the second diaphragm are deflectable along a first spatial axis, wherein the first spatial axis comprises an x-direction;
- operating a second partial microphone with a second diaphragm pair comprising a third diaphragm and a fourth diaphragm that are arranged opposite to each other, wherein the second diaphragm pair is arranged such that the third diaphragm and the fourth diaphragm are deflectable along a second spatial axis, wherein the second spatial axis comprises an y-direction;
- operating a third partial microphone with a third diaphragm pair comprising a fifth diaphragm and a sixth diaphragm that are arranged opposite to each other, wherein the third diaphragm pair is arranged such that the fifth diaphragm and the sixth diaphragm are deflectable along a third spatial axis, wherein the third spatial axis comprises a z-direction,
- wherein the x-direction, the y-direction and the z-direction are essentially orthogonal to one another,
- providing a first diaphragm signal in response to a deflection of the first diaphragm, providing a second diaphragm signal in response to a deflection of the second diaphragm, wherein the first diaphragm signal and the second diaphragm signal comprise a first phase relation, and combining the first diaphragm signal and the second diaphragm signal with a modified first phase relation to provide a first differential output signal allocated to the first spatial axis;
- providing a third diaphragm signal in response to a deflection of the third diaphragm, providing a fourth diaphragm signal in response to a deflection of the fourth diaphragm, wherein the third diaphragm signal and the fourth diaphragm signal comprise a second phase relation to one another, and combining the third diaphragm signal and the fourth diaphragm signal with a modified second phase relation to provide a second differential output signal allocated to the second spatial axis;
- providing a fifth diaphragm signal in response to a deflection of the fifth diaphragm and providing a sixth diaphragm signal in response to a deflection of a sixth diaphragm, wherein the fifth diaphragm signal and the sixth diaphragm signal comprise a third phase relation, and combining the fifth diaphragm signal and the sixth diaphragm signal with a modified third phase relation to provide a third differential output signal allocated to the third spatial axis,
- wherein the only the fifth diaphragm signal and the sixth diaphragm signal are added in the third phase relation to provide a single omnidirectional common mode output signal, and
- wherein the first differential output signal, the second differential output signal, the third differential output signal, and the single omnidirectional common mode output signal form an output of the method.
6 more elements
A non-transitory digital storage medium having stored therein a computer program for performing, when the computer program is run by a computer or a processor, a method for recording an acoustic signal, the method comprising:
- operating a first partial microphone with a first diaphragm pair comprising a first diaphragm and a second diaphragm that are arranged opposite to each other wherein the first diaphragm pair is arranged such that the first diaphragm and the second diaphragm are deflectable along a first spatial axis, wherein the first spatial axis comprises an x-direction;
- operating a second partial microphone with a second diaphragm pair comprising a third diaphragm and a fourth diaphragm that are arranged opposite to each other, wherein the second diaphragm pair is arranged such that the third diaphragm and the fourth diaphragm are deflectable along a second spatial axis, wherein the second spatial axis comprises an y-direction;
- operating a third partial microphone with a third diaphragm pair comprising a fifth diaphragm and a sixth diaphragm that are arranged opposite to each other, wherein the third diaphragm pair is arranged such that the fifth diaphragm and the sixth diaphragm are deflectable along a third spatial axis, wherein the third spatial axis comprises a z-direction,
- wherein the x-direction, the y-direction and the z-direction are essentially orthogonal to one another,
- providing a first diaphragm signal in response to a deflection of the first diaphragm, providing a second diaphragm signal in response to a deflection of the second diaphragm, wherein the first diaphragm signal and the second diaphragm signal comprise a first phase relation, and combining the first diaphragm signal and the second diaphragm signal with a modified first phase relation to provide a first differential output signal allocated to the first spatial axis;
- providing a third diaphragm signal in response to a deflection of the third diaphragm, providing a fourth diaphragm signal in response to a deflection of the fourth diaphragm, wherein the third diaphragm signal and the fourth diaphragm signal comprise a second phase relation to one another, and combining the third diaphragm signal and the fourth diaphragm signal with a modified second phase relation to provide a second differential output signal allocated to the second spatial axis;
- providing a fifth diaphragm signal in response to a deflection of the fifth diaphragm and providing a sixth diaphragm signal in response to a deflection of a sixth diaphragm, wherein the fifth diaphragm signal and the sixth diaphragm signal comprise a third phase relation, and combining the fifth diaphragm signal and the sixth diaphragm signal with a modified third phase relation to provide a third differential output signal allocated to the third spatial axis,
- wherein the only the fifth diaphragm signal and the sixth diaphragm signal are added in the third phase relation to provide a single omnidirectional common mode output signal, and
- wherein the first differential output signal, the second differential output signal, the third differential output signal, and the single omnidirectional common mode output signal form an output of the method.
6 more elements
Dependencies are inferred from the claim text.