The image model method has been widely used to simulate room impulse responses and the endeavor to adapt this method to different applications has also piqued great interest over the last few decades. This paper attempts to extend the image model method and develops an anchor-point-image-model (APIM) approach as a solution for simulating impulse responses by including both the source radiation and sensor directivity patterns. To determine the orientations of all the virtual sources, anchor points are introduced to real sources, which subsequently lead to the determination of the orientations of the virtual sources. An algorithm is developed to generate room impulse responses with APIM by taking into account the directional pattern functions, factional time delays, as well as the computational complexity. The developed model and algorithms can be used in various acoustic problems to simulate room acoustics and improve and evaluate processing algorithms.

翻译：图像模型方法已被广泛用于仿真房间冲激响应，近几十年来，将该方法适应不同应用场景的努力也引发了极大关注。本文试图拓展图像模型方法，提出了一种锚点图像模型（APIM）方法，作为同时包含声源辐射方向图与传感器指向性模式的冲激响应仿真解决方案。为确定所有虚拟声源的朝向，在真实声源中引入锚点，进而推导虚拟声源的朝向。提出了一种基于APIM的算法，该算法综合考虑方向性模式函数、分数时间延迟及计算复杂度，生成房间冲激响应。所建立的模型与算法可应用于多种声学问题，以仿真房间声学特性，并改进与评估信号处理算法。