The ecological validity of soundscape studies usually rests on a choice of soundscapes that are representative of the perceptual space under investigation. For example, a soundscape pleasantness study might investigate locations with soundscapes ranging from "pleasant" to "annoying". The choice of soundscapes is typically researcher-led, but a participant-led process can reduce selection bias and improve result reliability. Hence, we propose a robust participant-led method to pinpoint characteristic soundscapes possessing arbitrary perceptual attributes. We validate our method by identifying Singaporean soundscapes spanning the perceptual quadrants generated from the "Pleasantness" and "Eventfulness" axes of the ISO 12913-2 circumplex model of soundscape perception, as perceived by local experts. From memory and experience, 67 participants first selected locations corresponding to each perceptual quadrant in each major planning region of Singapore. We then performed weighted k-means clustering on the selected locations, with weights for each location derived from previous frequencies and durations spent in each location by each participant. Weights hence acted as proxies for participant confidence. In total, 62 locations were thereby identified as suitable locations with characteristic soundscapes for further research utilizing the ISO 12913-2 perceptual quadrants. Audio-visual recordings and acoustic characterization of the soundscapes will be made in a future study.
翻译:声学研究的生态有效性通常取决于代表所调查的感官空间的声学场景的选择。 例如, 声学舒适度研究可以调查有声学场景的地点, 从“ 喜悦” 到“ 静默” 。 声学场景的选择通常由研究人员主导, 但参与者主导的过程可以减少选择偏差, 提高结果可靠性。 因此, 我们提出一个由参与者牵头的强有力方法, 定位具有任意感官属性的特有声学场景。 我们验证我们的方法, 确定新加坡声音场景, 覆盖来自ISO 12913-2 声学感的“ 喜悦” 和“ 静脉动” 轴。 当地专家认为, 声学场景选择通常由“ 喜悦” 和“ 静态” 。 根据记忆和经验, 67名参与者首先选择了与新加坡每个主要规划区域的感知性夸度相对应的地点。 我们随后在选定的地点进行了加权K- 组合, 重量来自每个参与者在每一个地点所花的频率和持续时间。 因此, 我们作为预想者们的预想的预想点 13, 未来感学性, 将 的 正确性 定位 位置, 确定 。 正确 。