| 摘要 |
A specific sound is detected from sounds input by a sound input unit, using thresholds for detecting sounds. Images captured by an image capturing unit are recorded. A difference between a recorded image and a current image is calculated, and a location of a moving object is detected from the current image. A correspondence between information indicating a specific position in an image and information indicating sounds that could occur in the specific position is managed. In the case where a moving object is detected, the threshold for detecting a sound is changed, and the specific sound is detected from sounds, using the changed threshold, with reference to the correspondence managed in the position/sound correspondence information management unit.
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