mSOUND is an open-source toolbox written in MATLAB. This toolbox is intended for modeling linear/ nonlinear acoustic wave propagation in media (primarily biological tissues) with arbitrary heterogeneities, in which, the speed of sound, density, attenuation coefficient, power-law exponent, and nonlinear coefficient are all spatially varying functions. The computational model is an iterative one-way model based on a mixed domain method. In this article, a general guideline is given along with three representative examples to illustrate how to set up simulations using mSOUND. The first example uses the transient mixed-domain method (TMDM) forward projection to compute the transient acoustic field for a given source defined on a plane. The second example uses the frequency-specific mixed-domain method (FSMDM) forward projection to rapidly obtain the pressure distribution directly at the frequencies of interest, assuming linear or weakly nonlinear wave propagation. The third example demonstrates how to use TMDM backward projection to reconstruct the initial acoustic pressure field to facilitate photoacoustic tomography (PAT). mSOUND ( https://m-sound.github.io/mSOUND/home ) is designed to be complementary to existing ultrasound modeling toolboxes and is expected to be useful for a wide range of applications in medical ultrasound including treatment planning, PAT, transducer design, and characterization.

中文翻译：

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mSOUND：一个用于在非均质介质中模拟声波传播的开源工具箱

mSOUND是用MATLAB编写的开源工具箱。该工具箱旨在模拟具有任意异质性的介质（主要是生物组织）中的线性/非线性声波传播，其中，声速，密度，衰减系数，幂律指数和非线性系数都是空间变化的函数。计算模型是基于混合域方法的迭代单向模型。在本文中，给出了一般准则以及三个代表性示例，以说明如何使用mSOUND设置仿真。第一个示例使用瞬态混合域方法（TMDM）前向投影来计算平面上定义的给定源的瞬态声场。第二个示例使用特定于频率的混合域方法（FSMDM）进行正向投影，以假定线性或弱非线性波传播为前提，直接直接在感兴趣的频率处快速获得压力分布。第三个示例演示了如何使用TMDM向后投影来重建初始声压场，以促进光声层析成像（PAT）。声音（ https://m-sound.github.io/mSOUND/home ）的设计是对现有超声建模工具箱的补充，并有望在医学超声领域中广泛应用，包括治疗计划，PAT，换能器设计和表征。