Signal processing apparatus, signal processing method, program, and recording medium
First Claim
1. A signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal, the signal processing apparatus comprising:
- generating means for generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input;
determining means for determining whether the certain subject appears in the image on the basis of the information generated by the generating means; and
directional characteristic varying means for, if the determining means determines that the certain subject appears in the image, varying a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject.
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Accused Products
Abstract
A signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal includes generating means for generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input; determining means for determining whether the certain subject appears in the image on the basis of the information generated by the generating means; and directional characteristic varying means for, if the determining means determines that the certain subject appears in the image, varying a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject.
36 Citations
16 Claims
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1. A signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal, the signal processing apparatus comprising:
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generating means for generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input;
determining means for determining whether the certain subject appears in the image on the basis of the information generated by the generating means; and
directional characteristic varying means for, if the determining means determines that the certain subject appears in the image, varying a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A signal processing method for a signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal, the method comprising the steps of:
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generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input;
determining whether the certain subject appears in the image on the basis of the generated information; and
varying, if it is determined that the certain subject appears in the image, a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject.
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12. A program causing a signal processing apparatus that processes a video signal and an audio signal in synchronization with the video signal to perform signal processing, the program causing a computer to execute the steps of:
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controlling generation of information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input;
controlling determination of whether the certain subject appears in the image on the basis of the generated information; and
controlling, if it is determined that the certain subject appears in the image, variation of a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject. - View Dependent Claims (13)
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14. A signal processing apparatus processing an audio signal associated with an image of a subject, captured by imaging means, the signal processing apparatus comprising:
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image receiving means for receiving the image of the subject;
sound receiving means for receiving a sound;
model storing means for storing characteristic value models of a plurality of subjects;
characteristic value extracting means for extracting a characteristic value of the image of the subject;
detecting means for comparing the characteristic value of the image of the subject, extracted by the characteristic value extracting means, with the characteristic value models stored in the model storing means to detect an image of a certain subject; and
controlling means for, after the image of the certain subject is detected, enhancing a directional characteristic of the sound receiving means, which is associated with the detected image of the certain subject, and/or the level of a frequency band, which is associated with the image of the certain subject, or reducing the directional characteristic of the sound receiving means, which is not associated with the detected image of the certain subject, and/or the level of the frequency band, which is not associated with the image of the certain subject.
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15. A signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal, the signal processing apparatus comprising:
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a generating unit generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input;
a determining unit determining whether the certain subject appears in the image on the basis of the information generated by the generating unit; and
a directional characteristic varying unit varying, if the determining unit determines that the certain subject appears in the image, a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject.
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16. A signal processing apparatus processing an audio signal associated with an image of a subject, captured by an imaging unit, the signal processing apparatus comprising:
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an image receiving unit receiving the image of the subject;
a sound receiving unit receiving a sound;
a model storing unit storing characteristic value models of a plurality of subjects;
a characteristic value extracting unit extracting a characteristic value of the image of the subject;
a detecting unit comparing the characteristic value of the image of the subject, extracted by the characteristic value extracting unit, with the characteristic value models stored in the model storing unit to detect an image of a certain subject; and
a controlling unit enhancing, after the image of the certain subject is detected, a directional characteristic of the sound receiving unit, which is associated with the detected image of the certain subject, and/or the level of a frequency band, which is associated with the image of the certain subject, or reducing the directional characteristic of the sound receiving unit, which is not associated with the detected image of the certain subject, and/or the level of the frequency band, which is not associated with the image of the certain subject.
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Specification