Planar Room Impulse Response Dataset - ACT, DTU Electro (b. 355 r. 008)

Dataset of Room Impulse Responses measured at the Acoustic Technology group facilities, DTU Electro. The measurements were carried out in building 355, room 008, otherwise known as the "sound field control" room.<br>
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The dataset consists of measurements of the acoustic impulse response in a regular square grid of 80x80 cm². The measurements consist of 30x30 room impulse responses (e.g. 900 RIRs) where the microphone, a 1/2 inch free field condenser measurement microphone (Br\"uel\&amp;Kj\"aer, N\ae rum, Denmark) was automatically positioned using a UR5 (Universal Robots, Odense, Denmark) scanning robotic arm. A BM6 loudspeaker (Dynaudio, Skanderborg, Denmark) placed in a room corner was used to excite the room with 5s wideband logarithmic sweeps.  
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The data are available as H5 (Hierarchical Data Formats) with the following structure:
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Dataset "Sound field control room - HDF5 datastructure"<br>
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Dataset.attributes<br>
   ├── calibration (1) '94.33 dB @ 1.14 kHz'<br>
   ├── fs (1) 48000 Hz<br>
   ├── grid_bottom (3x900) [[2.76, 2.32, 2.73, ...  2.738 2.76..., ...]] m<br>
   ├── loudspeaker_position (3) [5.779 0.263 0.904] m<br>
   ├── room_dimensions (3)  [6.124 5.771 3.073] m<br>
   ├── sweep_amplitude (1) 0.4<br>
   ├── sweep_duration (1) 5 s<br>
   ├── sweep_range (2) [32. 12000.] Hz<br>
   ├── temperature (1) 20.3 °C<br>
   └── true_calibration (1) '94.19 dB @ 1.17 kHz'<br>
Dataset.groups<br>
   ├── Noise_recs_bottom (12x3x144000) float64<br>
   ├── RIRs_bottom (900x25439) float64 (e.g. 900 positions)<br>
   └── sweep_signal (288000) float64<br>
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Use with Matlab: https://mathworks.com/help/matlab/hdf5-files.html 
Use with Python: https://docs.h5py.org/en/stable/
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This dataset is part of the project <em>Danish Sound Cluster </em>project titled "<strong>Physics-informed Neural Networks for Sound Field Reconstruction</strong>" [url]. Find more datasets here: Project Page

本数据集为丹麦技术大学电子学院（DTU Electro）声学技术课题组在其实验场地测得的房间冲激响应（Room Impulse Responses，RIR）数据集。本次测量在355号楼008室开展，该房间亦被称为“声场控制”室。

该数据集包含按80cm×80cm规则方格阵列布设的声学冲激响应测量数据，共计900组房间冲激响应（即30×30的采样点位，共900个RIR）。测量过程中，采用UR5型扫描机械臂（优傲机器人公司，欧登塞，丹麦）自动定位1/2英寸自由场电容式测量传声器（Brüel&Kjær，奈鲁姆，丹麦）。置于房间角落的BM6型扬声器（丹拿公司，斯坎讷堡，丹麦）用于发射时长5秒的宽带对数扫频信号，以激励房间声场。

本数据集以H5（分层数据格式，Hierarchical Data Format）文件形式提供，结构如下：
数据集"Sound field control room - HDF5 数据结构"

数据集属性（Dataset.attributes）包含：
├── 校准值calibration (1) '94.33 dB @ 1.14 kHz'
├── 采样率fs (1) 48000 Hz
├── 底部网格坐标grid_bottom (3×900) [[2.76, 2.32, 2.73, ... 2.738 2.76..., ...]] 米
├── 扬声器位置loudspeaker_position (3) [5.779 0.263 0.904] 米
├── 房间尺寸room_dimensions (3) [6.124 5.771 3.073] 米
├── 扫频信号幅度sweep_amplitude (1) 0.4
├── 扫频信号时长sweep_duration (1) 5秒
├── 扫频频率范围sweep_range (2) [32. 12000.] Hz
├── 环境温度temperature (1) 20.3 °C
└── 校准真值true_calibration (1) '94.19 dB @ 1.17 kHz'
数据集组（Dataset.groups）包含：
├── 底部噪声记录Noise_recs_bottom (12×3×144000) float64
├── 底部房间冲激响应RIRs_bottom (900×25439) float64（对应900个采样点位）
└── 扫频信号sweep_signal (288000) float64

该数据集可通过以下工具读取：
Matlab：https://mathworks.com/help/matlab/hdf5-files.html
Python：https://docs.h5py.org/en/stable/

本数据集隶属于<em>丹麦声学子集群（Danish Sound Cluster）</em>项目，其研究主题为<strong>面向声场重构的物理信息神经网络（Physics-informed Neural Networks for Sound Field Reconstruction）</strong>[url]。更多数据集信息可访问项目主页。