Dataset of Spatial Room Impulse Responses in a Variable Acoustics Room for Six Degrees-of-Freedom Rendering and Analysis

Room acoustics measurements are used in many areas of audio research, from physical acoustics modelling and speech enhancement to virtual reality applications. This paper documents the technical specifications and choices made in the measurement of a dataset of spatial room impulse responses (SRIRs) in a variable acoustics room. Two spherical microphone arrays are used: the mh Acoustics Eigenmike em32 and the Zylia ZM-1, capable of up to fourth- and third-order Ambisonic capture, respectively. The dataset consists of three source and seven receiver positions, repeated with five configurations of the room's acoustics with varying levels of reverberation. Possible applications of the dataset include six degrees-of-freedom (6DoF) analysis and rendering, SRIR interpolation methods, and spatial dereverberation techniques. 

Accompanying paper on details of the dataset measurement: https://arxiv.org/abs/2111.11882

Changelog:

V 1.0 - Initial version.
V 1.1 - SOFA files updated to latest Matlab API (1.1.3), 'SingleRoomDRIR' convention, with SourcePosition and ListenerPosition z data corrected. Changed ListenerPosition and SourcePosition x data so that it follows the convention of origin in bottom left corner (rather than the previous bottom right). Fixed the swapped x and y labels in 6dof_source_and_receiver_positions.pdf.

室内声学测量广泛应用于音频研究的诸多领域，涵盖物理声学建模、语音增强乃至虚拟现实应用等方向。本文记录了在可变声学实验室中采集空间房间冲激响应（Spatial Room Impulse Responses, SRIRs）数据集时所采用的技术规格与相关选型决策。本次采集采用两款球形麦克风阵列（spherical microphone arrays）：mh Acoustics Eigenmike em32与Zylia ZM-1，二者分别支持最高四阶与三阶的安毕森（Ambisonic）声场采集。该数据集包含3个声源位置与7个接收点位置，并针对混响强度各不相同的5种房间声学配置完成了重复采集。该数据集的潜在应用场景涵盖六自由度（Six Degrees-of-Freedom, 6DoF）分析与渲染、SRIR插值方法以及空间去混响技术等方向。

配套的数据集采集细节论文：https://arxiv.org/abs/2111.11882

更新日志：
V 1.0：初始版本。
V 1.1：将SOFA文件更新至最新版Matlab API（1.1.3），采用"SingleRoomDRIR"标准规范，修正了SourcePosition与ListenerPosition的z轴坐标数据；调整了ListenerPosition与SourcePosition的x轴坐标数据，使其遵循原点位于左下角的行业规范（此前版本原点位于右下角）；修复了6dof_source_and_receiver_positions.pdf文档中x轴与y轴标签互换的问题。