通気性を有する遮音壁構造の基礎検討 : 第2報, 音場を考慮した性能設計

抄録

The working principle and characteristics of a new sound isolation panel, containing ventilation holes, was described in the first report. The panel provides a considerable sound isolation effect in the required frequency band by controlling the acoustic anti-resonance frequency of the sound field inside the panel. However, when the panel is used close to a sound source, a standing wave is generated between it and the sound source. As a result, the sound isolation effect changes due to the coupling of the sound fields inside and outside the panel. This paper describes a way to locate the panel taking this phenomenon into account.