Parametric Optimization of Local Resonant Sonic Crystals Window on Noise Attenuation by Using Taguchi Method and ANOVA Analysis

Local resonant sonic crystals (LRSCs) window as a novel design has recently been proposed to achieve good balance between noise mitigation, natural ventilation and lighting. In an effort explore the feasibilities of such designs in civil residential buildings, optimization methodology was develop more compact LRSCs with high attenuation performance present study. Specifically, Taguchi method adopted for experiments on parameters interest their corresponding levels, SN ratio analysis then applied parametric evaluations specified frequencies traffic (concentrated sound energy frequency range: 630–1000 Hz). Three optimal sets interested frequencies, namely, 630 Hz, 800 Hz 1000 were obtained. ANOVA conducted quantificationally identify statistical significance remarkable contribution desired performance. Results indicate that slit size most significant influence overall performance, followed by cavity width. An set best reduction range finally determined combining analysis. A prototype final optimized fabricated tested semi-anechoic chamber. Good agreement found experiment numerical simulation. comparison benchmark case, can further 2.84 dBA, 3.48 dBA 5.56 respectively. The be promoted 3.28 dBA. results is practical efficient designing high-performance or improving similar applications.