In developing virtual acoustic environments, it is important to understand the relationship between the computation cost and the perceptual significance of the resultant numerical error. In this paper, we propose a quality criterion that evaluates the error significance of path-tracing-based sound propagation simulators. We present an analytical formula that estimates the error signal power spectrum. With this spectrum estimation, we can use a modified Zwicker's loudness model to calculate the relative loudness of the error signal masked by the ideal output. Our experimental results show that the proposed criterion can explain the human perception of simulation error in a variety of cases.
翻译:在开发虚拟声学环境时,必须理解计算成本与由此得出的数字错误的感知意义之间的关系。在本文中,我们提出了一个质量标准,用以评估基于路径追踪的音响传播模拟器的错误意义。我们提出了一个分析公式,用以估计错误信号频谱。通过这一频谱估计,我们可以使用修改后的 Zwicker 的响度模型来计算被理想输出掩盖的错误信号的相对大度。我们的实验结果显示,拟议的标准可以解释人类对模拟错误的各种情况的看法。