| 摘要 |
<p>A surround system for producing a sound beam of each channel of a speaker array in an optimized output direction without requiring the user to do troublesome operation. A parameter setting control section (6) makes a control to cause sound beams to be outputted from a speaker array (1) and to rotate the output directions of the sound beams, determines the output directions of the sound beams of at least a part of the channels of the speaker array (1) according to the variation of the sound pressure detected by a microphone (7) when the output directions of the sound beams are rotated, and computes the output directions of the sound beams of the other channels depending on the determined output directions of the other channels.</p> |
