| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inexpensive reverberation box in which sound is reverberated for a long time without requiring hands of a professional person. <P>SOLUTION: The reverberation box consists of a rectangular parallelepiped box 1 having a rectangular parallelepiped shape and springs 2(2-1 to 2-12) and springs 3 (3-1 to 3-8) which are mounted on side surfaces of the rectangular parallelepiped box 1. The springs 2-1 to 2-12 are mounted in parallel with a side [ab] and the springs 3-1 to 3-8 are mounted in parallel with a side [ad] to obtain better reverberation sound employing a simple structure. When foamed polystyrene is used as the material of the rectangular parallelepiped box 1, the cost of the material is reduced, the weight is made lighter and the box is easily hand carried. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
