Soundscape plays a positive, health-related role in urban forests, and there is a competitive allocation of cognitive resources between soundscapes and lightscapes. This study aimed to explore the relationship between perceived loudness sensitivity and brightness in urban forests through eye opening and closure. Questionnaires and measuring equipment were used to gather soundscape and lightscape information at 44 observation sites in urban forested areas. Diurnal variations, Pearson’s correlations, and formula derivations were then used to analyze the relationship between perception sensitivity and how perceived loudness sensitivity was influenced by lightscape. Our results suggested that soundscape variation plays a role in audio–visual perception in urban forests. Our findings also showed a gap in perception sensitivity between loudness and brightness, which conducted two opposite conditions bounded by 1.24 dBA. Furthermore, we found that the effect of brightness on perceived loudness sensitivity was limited if variations of brightness were sequential and weak. This can facilitate the understanding of individual perception to soundscape and lightscape in urban forests when proposing suitable design plans.

中文翻译：

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城市森林中受亮度影响的响度感知灵敏度：睁眼和闭眼时的比较

声景在城市森林中扮演着与健康相关的积极角色，并且在声景和光景之间认知资源的竞争性分配。本研究旨在通过睁眼和闭眼来探索城市森林中感知响度灵敏度和亮度之间的关系。问卷和测量设备被用来收集城市森林地区44个观测点的声景和光景信息。然后使用日变化，皮尔逊相关性和公式推导来分析感知灵敏度与感知的响度灵敏度如何受到光景的影响之间的关系。我们的结果表明，声景变化在城市森林的视听感知中起作用。我们的发现还表明，响度和亮度之间的感知灵敏度存在差距，这在以1.24 dBA为界的两个相反条件下进行。此外，我们发现，如果亮度变化是连续且微弱的，则亮度对感知响度灵敏度的影响会受到限制。当提出合适的设计方案时，这可以促进对个人对于城市森林中的声景和光景的理解。