Room acoustical simulations are usually evaluated by comparing them to measurements in corresponding physical environments as a benchmark. However, it proved to be challenging to provide a precise representation of the room geometry, the source and receiver characteristics, and the absorption and scattering coefficients to be re-modeled in the simulation. We aim to overcome these shortcomings by providing a database that can serve as a Benchmark for Room Acoustical Simulations (BRAS) and which is expandable and permanently available to researchers and developers of simulation software. The database includes a selection of reference scenes such as “single reflection”, or “diffraction around an infinite wedge” which isolate specific acoustic phenomena. This article introduces the concept of the BRAS along with the description of the currently contained acoustic scenes and discusses the implication of measurement errors. The acquisition of impulse responses for omnidirectional and binaural receivers, the identification of the boundary conditions, and the data structure is detailed in the database itself. The BRAS is publicly available¹. The free license under which it is provided allows for future extensions such as additional scenes or improved data due to advanced measurement techniques.

室内声学模拟通常通过将它们与相应物理环境中的测量值进行比较来进行评估，以作为基准。然而，事实证明，要提供房间几何形状，源和接收器特性以及要在模拟中重新建模的吸收系数和散射系数的精确表示是一项挑战。我们旨在通过提供一个数据库来克服这些缺点，该数据库可以用作室内声学模拟（BRAS）的基准，并且该数据库可扩展并永久提供给模拟软件的研究人员和开发人员。该数据库包括对参考场景的选择，例如“单反射”或“无限楔形周围的衍射”，这些场景隔离了特定的声学现象。本文介绍了BRAS的概念以及当前包含的声学场景的描述，并讨论了测量误差的含义。数据库本身详细介绍了全向和双耳接收器的脉冲响应的获取，边界条件的识别以及数据结构。BRAS公开可用¹。由于使用先进的测量技术，因此提供免费许可证可用于将来的扩展，例如其他场景或改进的数据。