To provide a sound absorption device that absorbs a plurality of noises of different frequencies from each other, as a whole.SOLUTION: A sound absorbing device 1 comprises a sound absorbing portion 10 with a multilayer structure and a frame 20 that supports an edge of the sound absorbing portion. The sound absorbing portion comprises a multilayer structure including a first sound-absorbing layer 11 that absorbs a first noise and a second sound-absorbing layer 12 that absorbs a second noise different from the first noise. The first noise and the second noise are sounds with different frequency bands from each other.SELECTED DRAWING: Figure 5
【課題】互いに周波数が異なる複数の騒音を双方とも吸音する吸音装置を提供する。【解決手段】吸音装置1は、多層構造の吸音部10と、吸音部の縁部を支持する枠体20と、を備えている。吸音部は、第1騒音を吸音する第1吸音層11と、第1騒音とは異なる第2騒音を吸音する第2吸音層12と、を含む多層構造を有する。前1騒音と前記第2騒音とは、互いに周波数帯域が異なる音である。【選択図】図5
SOUND ABSORPTION DEVICE
吸音装置
2023-03-14
Patent
Electronic Resource
Japanese