Akademik Veri Yönetim Sistemi
24th International Congress on Acoustics, ICA 2022, Gyeongju, Güney Kore, 24 - 28 Ekim 2022, (Tam Metin Bildiri)
The decay of sound energy in coupled-volume room configurations can be non-exponential under specific conditions. When designed appropriately, such configurations may offer increased clarity and better spaciousness that are desired qualities, especially for performance venues. While statistically grounded methods can be used to assess non-exponential decay characteristics, architectural aspects of such systems that result in desired audible attributes have yet to be systematically studied. As such, the design of such spaces remains an exploratory pursuit as it has since the first reverberation chambers were attempted in the 1960’s. Turning point and level difference obtained from energy decay curves (EDC) can be used to quantify the acoustics of coupled volumes. This study aims to identify the effects of absorption area difference between two rooms on the strength of acoustical coupling empirically assessed through the level difference attribute. For this experimental study, acoustical simulations of two different scenarios of coupled room systems are tested for three fixed aperture sizes and a large number of absorption area. The absorption area is systematically changed by varying the surface materials to gather a set of coupling factors between 0 to 1. The data obtained from ray-tracing simulations are then analyzed via Bayesian decay parameter estimations. Results are comparatively assessed for estimating the correlation between coupling factor versus level differences. In the last step, a listening test is held by using the audio clips obtained from auralizations to assess the audibility and detectability of different levels of double decays.