Systems, methods, and apparatus for indicating direction of arrival
First Claim
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1. A method of indicating a direction of arrival of a sound, said method comprising:
- calculating a first estimate, with respect to an axis of a first microphone array, of the direction of arrival;
calculating a second estimate, with respect to an axis of a second microphone array that is different than the axis of the first microphone array, of the direction of arrival;
determining an orientation, with reference to a world reference axis, of a device that includes the first and second microphone arrays; and
based on the first and second estimates and the determined orientation, calculating a projection of the direction of arrival onto a projection plane that does not include the direction of arrival.
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Abstract
Systems, methods, and apparatus for projecting an estimated direction of arrival of sound onto a plane that does not include the estimated direction are described.
85 Citations
52 Claims
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1. A method of indicating a direction of arrival of a sound, said method comprising:
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calculating a first estimate, with respect to an axis of a first microphone array, of the direction of arrival; calculating a second estimate, with respect to an axis of a second microphone array that is different than the axis of the first microphone array, of the direction of arrival; determining an orientation, with reference to a world reference axis, of a device that includes the first and second microphone arrays; and based on the first and second estimates and the determined orientation, calculating a projection of the direction of arrival onto a projection plane that does not include the direction of arrival. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for indicating a direction of arrival of a sound, said apparatus comprising:
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means for calculating a first estimate, with respect to an axis of a first microphone array, of the direction of arrival; means for calculating a second estimate, with respect to an axis of a second microphone array that is different than the first microphone array, of the direction of arrival; means for determining an orientation, with reference to a world reference axis, of a device that includes the first and second microphone arrays; and means for calculating, based on the first and second estimates and the determined orientation, a projection of the direction of arrival onto a projection plane that does not include the direction of arrival. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An apparatus for indicating a direction of arrival of a sound, said apparatus comprising:
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an orientation sensor in electrical communication with a processor; wherein the orientation sensor is configured to determine an orientation, with reference to a world reference axis, of the apparatus; and wherein the processor is configured to; calculate a first estimate, with respect to an axis of a first microphone array, of the direction of arrival, calculate a second estimate, with respect to an axis of a second microphone array that is different than the first microphone array, of the direction of arrival, and calculate, based on the first and second estimates and said determined orientation, a projection of the direction of arrival onto a projection plane that does not include the direction of arrival. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification