SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR MULTI-MICROPHONE LOCATION-SELECTIVE PROCESSING
First Claim
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1. A method of audio signal processing, said method comprising:
- calculating a first indication of a direction of arrival, relative to a first pair of microphones, of a first sound component received by the first pair of microphones;
calculating a second indication of a direction of arrival, relative to a second pair of microphones that is separate from the first pair, of a second sound component received by the second pair of microphones; and
based on the first and second direction indications, controlling a gain of an audio signal to produce an output signal,wherein the microphones of the first pair are located at a first side of a midsagittal plane of a head of a user, andwherein the microphones of the second pair are located at a second side of the midsagittal plane that is opposite to the first side.
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Abstract
A multi-microphone system performs location-selective processing of an acoustic signal, wherein source location is indicated by directions of arrival relative to microphone pairs at opposite sides of a midsagittal plane of a user'"'"'s head.
170 Citations
49 Claims
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1. A method of audio signal processing, said method comprising:
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calculating a first indication of a direction of arrival, relative to a first pair of microphones, of a first sound component received by the first pair of microphones; calculating a second indication of a direction of arrival, relative to a second pair of microphones that is separate from the first pair, of a second sound component received by the second pair of microphones; and based on the first and second direction indications, controlling a gain of an audio signal to produce an output signal, wherein the microphones of the first pair are located at a first side of a midsagittal plane of a head of a user, and wherein the microphones of the second pair are located at a second side of the midsagittal plane that is opposite to the first side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for audio signal processing, said apparatus comprising:
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means for calculating a first indication of a direction of arrival, relative to a first pair of microphones, of a first sound component received by the first pair of microphones; means for calculating a second indication of a direction of arrival, relative to a second pair of microphones that is separate from the first pair, of a second sound component received by the second pair of microphones; and means for controlling a gain of an audio signal, based on the first and second direction indications, wherein the microphones of the first pair are located at a first side of a midsagittal plane of a head of a user, and wherein the microphones of the second pair are located at a second side of the midsagittal plane that is opposite to the first side, and wherein the first pair is separated from the second pair by at least ten centimeters. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An apparatus for audio signal processing, said apparatus comprising:
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a first pair of microphones configured to be located, during a use of the apparatus, at a first side of a midsagittal plane of a head of a user; a second pair of microphones that is separate from the first pair and is configured to be located, during the use of the apparatus, at a second side of the midsagittal plane that is opposite to the first side; a first direction indication calculator configured to calculate a first indication of a direction of arrival, relative to the first pair of microphones, of a first sound component received by the first pair of microphones; a second direction indication calculator configured to calculate a second indication of a direction of arrival, relative to the second pair of microphones, of a second sound component received by the second pair of microphones; and a gain control module configured to control a gain of an audio signal, based on the first and second direction indications, wherein the first pair is configured to be separated from the second pair, during the use of the apparatus, by at least ten centimeters. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A non-transitory computer-readable storage medium having tangible features that when read by a machine cause the machine to:
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calculate a first indication of a direction of arrival, relative to a first pair of microphones, of a first sound component received by the first pair of microphones; calculate a second indication of a direction of arrival, relative to a second pair of microphones that is separate from the first pair, of a second sound component received by the second pair of microphones; and control a gain of an audio signal, based on the first and second direction indications, to produce an output signal, wherein the microphones of the first pair are located at a first side of a midsagittal plane of a head of a user, and wherein the microphones of the second pair are located at a second side of the midsagittal plane that is opposite to the first side.
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Specification