Barcelona Media - Innovation Centre, Avenida Diagonal 177, 08018 Barcelona, Spain.
J Acoust Soc Am. 2010 Apr;127(4):EL172-7. doi: 10.1121/1.3361042.
Determining the absolute onset time of reflections in an acoustic impulse response (IR) has applications for both subjective and physical acoustics problems. Although computationally simple, a first-order energetic analysis of the IR can lead to false-positive identification of reflections. This letter reports on a method to determine reflection onset timings using a modified running local kurtosis analysis to identify regions in the IR where the distribution is non-normal. IRs from both real and virtual rooms are used to validate the method and to find optimum analysis window sizes.
确定声脉冲响应（IR）中反射的绝对起始时间在主观和物理声学问题中都有应用。尽管能量分析方法计算简单，但它可能会导致错误地识别反射。本研究报告了一种使用改进的局部峰度分析来确定反射起始时间的方法，以识别 IR 中非正态分布的区域。使用真实和虚拟房间的 IR 来验证该方法并找到最佳的分析窗口大小。
