AI 中文总结
本文提出一种基于部分最优传输的插值方法,利用图像源与物理声源移动距离相同的特性,通过统计模型推导成本函数,实现移动声源轨迹中图像源位置的有效插值。
AI 中文摘要
在几何声学中,房间冲激响应(RIR)可以用自由空间中的一组图像源来表示。对于固定的声源位置,图像源允许在任意接收器位置计算RIR。然而,对于移动的物理声源,图像源也随之移动,这使得插值更加困难。在本文中,我们针对移动声源的图像源位置,在给定轨迹起点和终点图像源位置的情况下,开发了一种插值方法。该方法利用了每个图像源移动的距离与物理声源相同的特性。我们建立了一个统计模型来推导成本函数,并在所提出的部分最优传输(POT)方法中使用了适当的虚拟成本。通过模拟实验,使用所提出的成本函数的POT方法被证明比替代方法更有效。
英文摘要
In geometrical acoustics, room impulse responses (RIRs) can be represented by a set of image sources in free space. For a fixed source position, the image sources allow for computing RIRs at arbitrary receiver positions. However, for a moving physical source, the image sources also move, making interpolation more difficult. In this paper we develop an interpolation method for image source positions of a moving source, given image source positions at the start and end of the trajectory. The method exploits the fact that each image source moves the same distance as the physical source. A statistical model is developed to derive cost functions and an appropriate dummy cost used in the proposed partial optimal transport (POT) approach. Through simulated experiments, POT using the proposed cost functions is shown to be effective compared to the alternatives.