| 摘要 |
PROBLEM TO BE SOLVED: To provide a system for reducing chamber reverberation sound, while maintaining a chamber space excellent in design without causing mismatching in design which would occur if a wall surface type sound adsorption panel is employed.SOLUTION: A chamber reverberation sound reduction system is finished to have a desired shape of a seated object to be installed in a chamber provided with a seat part 110 and a back rest part 130. The seat part 110 is filled with a vertical direction sound absorption material 120 so as to absorb sound facing a vertical sound wave for a listener with respect to a space inside the seat part. The back rest part 130 is filled with a back and forth direction sound adsorption material 140 so as to absorb sound facing a back and forth sound wave for a listener with respect to a space inside the back rest part. In the vertical direction sound adsorption material 120 and a back and forth direction sound adsorption material 140, the sound absorption materials are configured to have a two-layer structure of a first sound absorption material high in density and a second sound adsorption material low in density. With a boundary surface with the first sound absorption material and the second sound absorption material as an inclined plane, the sound absorption materials are assembled into a wedge-like shape so that the reverberation sound producible by the sound emitted from the sound source in the chamber can be effectively suppressed. |
