| 摘要 |
PROBLEM TO BE SOLVED: To improve the flexibility of the adjustment of acoustic properties of a plate forming a housing of an acoustic device such as a speaker.SOLUTION: A housing of a speaker or the like is formed by a lamination chip board formed by tucking a material, having acoustic properties different from a wooden material, in an intermediate layer made of the wooden material. The intermediate layer tucked in the wooden material is, for example, paper. Tucking paper improves the internal loss of the lamination chip board and adjusts the acoustic properties. The paper is disposed so as to be lopsidedly located close to a front surface or a rear surface of the lamination chip board thereby varying the acoustic properties between the front surface and the rear surface. |
