| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the degree of freedom of an installation place, and enable a user to easily setting directivity of sounds. <P>SOLUTION: A microphone 2 is installed at a listening position so that a speaker array 10 radiates a test audio beam corresponding to a measuring signal, sweeping for gradually changing an angle of a test audio beam is executed, and the microphone 2 collects the audio beam. A beam angle detector 5 obtains a radiation angle of sounds of multi-channel on the basis of measured data stored in a level measuring part 4. A control unit 6 decides the directivity of sounds of each channel and sets directivity for a beam control section 8 for controlling the directivity of the sounds of each channel. A level measuring part 4 performs collecting and storing the measured data after a predetermined waiting time elapses after updating the radiation angle of the test audio beam, every time the radiation angle is updated. <P>COPYRIGHT: (C)2007,JPO&INPIT |
