AUDIENCE STATE ESTIMATION SYSTEM, AUDIENCE STATE ESTIMATION METHOD, AND AUDIENCE STATE ESTIMATION PROGRAM
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Abstract
Video signal relative to an imaged audience and audio signal according to voices from the audience are generated in an input unit. A characteristic amount detection unit detects information on a movement amount, movement periodicity, a volume, voice periodicity of the audience, and a frequency component of voices from the audience based on the video signal or the audio signal. An estimation unit estimates an audience state based on the detected result. An output unit outputs the estimated result of the audience state. The audience state can be easily estimated without observing the audience state by a person.
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Citations
55 Claims
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1-11. -11. (canceled)
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12. An audience state estimation system comprising:
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sound-obtaining device for obtaining sound from an audience and generating an audio signal according to the sound thus obtained; volume detection device for detecting a volume of the sound from said audience based on said audio signal; and estimation device for estimating an audience state based on said volume. - View Dependent Claims (13, 14, 15, 16)
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17. An audience state estimation system comprising:
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sound-obtaining device for obtaining sound from an audience and generating an audio signal according to the sound thus obtained; sound periodicity detection device for detecting sound periodicity from said audience based on said audio signal; and estimation device for estimating an audience state based on said sound periodicity. - View Dependent Claims (18, 19, 20, 21, 22)
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23. An audience state estimation system comprising:
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sound-obtaining device for obtaining sound from an audience and generating an audio signal according to the sound thus obtained; spectrum detection device for performing Fourier transform on said audio signal and detecting the center of gravity of the Fourier transformed result; and estimation device for estimating an audience state based on said center of gravity. - View Dependent Claims (24, 25)
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26. An audience state estimation system comprising:
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sound-obtaining device for obtaining sound from an audience and generating an audio signal according to the sound thus obtained; component ratio detection device for performing Fourier transform on said audio signal and detecting a high-frequency to low-frequency component ratio by calculating said ratio based on the Fourier transformed result; and estimation device for estimating an audience state based on said high-frequency to low-frequency component ratio. - View Dependent Claims (27, 28)
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29-38. -38. (canceled)
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39. An audience state estimation method comprising:
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obtaining sound from an audience and generating an audio signal according to the sound thus obtained; detecting a volume of the sound from said audience based on said audio signal; and estimating an audience state based on said volume. - View Dependent Claims (40, 41, 42, 43)
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44. An audience state estimation method comprising:
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obtaining sound from an audience and generating an audio signal according to the sound thus obtained; detecting sound periodicity from said audience based on said audio signal; and estimating an audience state based on said sound periodicity. - View Dependent Claims (45, 46, 47, 48)
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49. An audience state estimation method comprising:
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obtaining sound from an audience and generating an audio signal according to the sound thus obtained; performing Fourier transform on said audio signal and detecting the center of gravity of the Fourier transformed result; and estimating an audience state based on said center of gravity. - View Dependent Claims (50, 51)
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52. An audience state estimation method comprising:
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obtaining sound from an audience and generating an audio signal according to the sound thus obtained; performing Fourier transform on said audio signal and calculating a high-frequency to low-frequency component ratio based on the Fourier transformed result; and estimating an audience state based on said high-frequency to low-frequency component ratio. - View Dependent Claims (53, 54)
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55-58. -58. (canceled)
Specification