| 摘要 |
There is provided a loudspeaker array device which has a large freedom of installation place and whose sound beam can easily be set by a user. A method for setting the sound beam of the loudspeaker array device is also provided. The loudspeaker array device ( 1 ) makes the sound beam formed by the audio signal limited to the band where the angle of the sound beam can be adjusted, sweep from 0 to 180 degrees in the front of the loudspeaker array ( 10 ) and the direct sound and the reflected sound of the sound beam are collected by a non-directional microphone ( 2 ). The collected sound data is analyzed to detect a peak equal to or above a threshold value. Symmetry of each peak is checked. When symmetry is present, the angle at which the peak has been detected is set as the angle for outputting the sound beam for each channel of the surround sound. Thus, according to the shape of the room where the loud-speaker array device is installed and the installation position, it is possible to set the sound beam emission angle at an optimal position.
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