A Simple, Robust Measure of Reverberation Echo Density
A Simple, Robust Measure of Reverberation Echo Density
复制标题
混响回声密度的简单、稳健的测量
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
P. Huang
中科院分区：
文献类型：
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作者：
J. Abel;P. Huang
提出了一种从混响脉冲响应测量回声密度的简单、稳健的方法。根据混响场在声空间完全混合时呈现高斯分布的特性，该测量方法计算给定脉冲响应窗口中标准差之外的样本，并按高斯噪声的预期进行归一化。该方法对均衡化和混响时间不敏感，在人工混响和房间脉冲响应测量上都表现良好。听力测试表明，以这种方式测量的回声密度与感觉到的混响的时间质量或质地之间存在相关性。
A simple, robust method for measuring echo density from a reverberation impulse response is presented. Based on the property that a reverberant field takes on a Gaussian distribution once an acoustic space is fully mixed, the measure counts samples lying outside a standard deviation in a given impulse response window and normalizes by that expected for Gaussian noise. The measure is insensitive to equalization and reverberation time, and is seen to perform well on both artificial reverberation and measurements of room impulse responses. Listening tests indicate a correlation between echo density measured in this way and perceived temporal quality or texture of the reverberation.