METHODS AND APPARATUS TO DETERMINE A STATE OF A MEDIA PRESENTATION DEVICE
First Claim
1. An apparatus to determine a source of a first audio signal sensed by a first microphone, the apparatus comprising:
- an audio comparator to compare the first audio signal to a second audio signal from a second microphone to generate a first set of weighted coefficients, the first microphone and the second microphone positioned with respect to a first source; and
a state determiner to;
a) compare the first set of weighted coefficients to a second set of weighted coefficients of a reference audio signal to generate a similarity value, the reference audio signal based on audio sensed by the first microphone and by the second microphone and originated from the first source; and
b) identify the source of the first audio signal as the first source in response to the similarity value satisfying a threshold.
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Abstract
Methods and apparatus to determine a state of a media presentation device are disclosed. Example disclosed methods include generating a first set of weighted coefficients based on first audio received by first and second microphones at a first time. Example disclosed methods include generating a second set of weighted coefficients based on second audio received by the first and second microphones at a second time after the first time. Example disclosed methods include comparing the first set of coefficients and the second set of coefficients to generate a similarity value. Example disclosed methods include, when the similarity value satisfies a threshold, determining that the media presentation device is in a first state. Example disclosed methods include, when the similarity value does not satisfy the threshold, determining that the media presentation device is in a second state.
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Citations
20 Claims
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1. An apparatus to determine a source of a first audio signal sensed by a first microphone, the apparatus comprising:
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an audio comparator to compare the first audio signal to a second audio signal from a second microphone to generate a first set of weighted coefficients, the first microphone and the second microphone positioned with respect to a first source; and a state determiner to; a) compare the first set of weighted coefficients to a second set of weighted coefficients of a reference audio signal to generate a similarity value, the reference audio signal based on audio sensed by the first microphone and by the second microphone and originated from the first source; and b) identify the source of the first audio signal as the first source in response to the similarity value satisfying a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer readable storage medium comprising instructions that, when executed, cause a machine to at least:
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compare a first audio signal from a first microphone to second audio from a second microphone to generate a first set of weighted coefficients, the first microphone and the second microphone positioned with respect to a first source; compare the first set of weighted coefficients to a second set of weighted coefficients of a reference audio signal to generate a similarity value, the reference audio signal based on audio originated from the first source; and identify the source of the first audio signal as the first source when the similarity value satisfies a threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus to determine a source of a first audio signal sensed by a first microphone, the apparatus comprising:
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means for comparing the first audio signal to a second audio signal from a second microphone to generate a first set of weighted coefficients, the first microphone and the second microphone positioned with respect to a first source; and means for comparing the first set of weighted coefficients to a second set of weighted coefficients of a reference audio signal to generate a similarity value, the reference audio signal based on audio sensed by the first microphone and by the second microphone and originated from the first source; and means for identifying the source of the first audio signal as the first source in response to the similarity value satisfying a threshold. - View Dependent Claims (17, 18, 19, 20)
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Specification