| 摘要 |
A portable terminal apparatus includes a camera, loudspeaker, determination unit, and control unit. The camera senses an image. The loudspeaker outputs a notification sound. The determination unit determines whether it is bright around the portable terminal apparatus, at a predetermined time interval on the basis of a video signal from the camera. The control unit controls to increase/decrease the output volume of the loudspeaker by a predetermined value in accordance with the determination result every time the determination unit performs determination. A portable terminal apparatus control method and a recording medium which records a program are also disclosed.
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