使用改进的镜像源方法模拟安装在音频设备上的换能器之间的房间传递函数
Simulating room transfer functions between transducers mounted on audio devices using a modified image source method
AI总结：
本研究扩展了镜像源方法（ISM），引入球谐指向性系数以模拟物理设备换能器的声学衍射效应，并通过有限元仿真验证，证明其比现有方法更准确地模拟房间传递函数，助力语音和声学信号处理算法的开发。
摘要：
镜像源方法（ISM）因其易用性和计算效率常被用于模拟房间声学。标准ISM仅限于点源与全向接收器之间的房间脉冲响应模拟。在本研究中，使用球谐指向性系数对ISM进行了扩展，以包含由于安装在物理设备上的源和接收器换能器引起的声学衍射效应，这在实际情况中经常遇到。所提出的方法通过矩形房间内各种扬声器和麦克风配置的有限元仿真进行了验证。结果表明，所提出方法的准确性与房间内设备的尺寸、形状、数量和位置有关。还提出了一种所提方法的简化版本，可以显著减少计算量。所提出的方法及其简化版本能够比当前可用的镜像源方法更准确地模拟房间传递函数，并有助于语音和声学信号处理算法的开发与评估，包括语音增强、声学场景分析和声学参数估计。
英文摘要：
The image source method (ISM) is often used to simulate room acoustics due to its ease of use and computational efficiency. The standard ISM is limited to simulations of room impulse responses between point sources and omnidirectional receivers. In this work, the ISM is extended using spherical harmonic directivity coefficients to include acoustic diffraction effects due to source and receiver transducers mounted on physical devices, which are typically encountered in practical situations. The proposed method is verified using finite element simulations of various loudspeaker and microphone configurations in a rectangular room. It is shown that the accuracy of the proposed method is related to the sizes, shapes, number, and positions of the devices inside a room. A simplified version of the proposed method, which can significantly reduce computational effort, is also presented. The proposed method and its simplified version can simulate room transfer functions more accurately than currently available image source methods and can aid the development and evaluation of speech and acoustic signal processing algorithms, including speech enhancement, acoustic scene analysis, and acoustic parameter estimation.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
