| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that sound leaks in directions other than the direction of a user using the device and is heard, in the device including a speaker array for transmitting the sound in a specific direction.SOLUTION: The speaker array includes a characteristic control unit for controlling the sound outputted from a speaker element, and the speaker element outputs reproducing sound so that the reproducing sound becomes equal to or higher than a fixed sound pressure at one or more predetermined listening points, and executes control so as to output masking sound so that the reproducing sound becomes equal to or lower than a fixed sound pressure ratio to the sound other than the reproducing sound at one or more non-listening points set beforehand other than the listening points. |
