| 摘要 |
<p>When a person (A) in a room (X) speaks toward a microphone (105), the voice is outputted from a speaker (203) in a room (Y). Then, a sound pressure level at an arbitrary position in the room (Y) is obtained and the obtained sound pressure level is displayed on a display (102) in the room (X). Thus, the person (A) can grasp whether the voice is outputted at a desired volume.</p> |
