Room Impulse Response Dataset: Niels Bohr Institute - Auditorium A

Dataset description This dataset is comprised of acoustic Room Impulse Response (RIR) measurements using different measurement equipment at the iconic Auditorium A, in the Niels Bohr Institute, Copenhagen. The measurements were carried out during the days July 22nd & 23rd, 2023. The dataset includes: rir_NBI_line.h5 – Sequential measurements over a line using a robotic arm (UR5, Universal Robots) for microphone positioning. rir_NBI_em32.h5 – Distributed RIRs measured with the 32-channel spherical microphone array Eigenmike (em32, mh Acoustics). rir_NBI_em32.sofa – SOFA format of the previous file. The room The Auditorium has a volume of approximately 126 m3 and is roughly rectangular with a tilted floor for the audience. The room was fully furnished with classroom equipment when measured. On one side wall, there are several interspaced windows. The reverberation time in octave bands is: F (Hz) 32 63 126 250 500 1k 2k 4k 8k 16k T30 (s) 0.75 0.74 0.61 0.72 0.80 0.88 1.03 1.05 0.85 0.58 The measurements All measurements were obtained using an exponential sweep covering the frequencies 20-20k Hz. The specific duration of the sweep varies with the measurement setup and can be found in the corresponding file. The sampling rate is 48 kHz. The source is a two-way loudspeaker (BM6, Dynaudio), and its position was kept constant throughout the entire measurement campaign. The remaining equipment utilised was an audio interface (Fireface UCX, RME), a loudspeaker amplifier, a microphone amplifier (Nexus, B&K). The atmospheric conditions for each set of measurements are included in the corresponding file. Related publications This dataset is linked to the publication: Figueroa-Duran A. & Fernandez-Grande E., Reconstruction of reverberant sound fields over large spatial domains. In J. Acoust. Soc. Am. (2025), https://doi.org/10.1121/10.0034833 Contact For any questions, please address them to [e-mail].数据集说明 本数据集采集自哥本哈根尼尔斯·玻尔研究所的标志性A礼堂，采用不同测量设备获取声学房间冲激响应（Room Impulse Response, RIR）测量数据，测量时段为2023年7月22日至23日。 本数据集包含以下文件： - rir_NBI_line.h5：采用机械臂（UR5，Universal Robots）进行麦克风定位的沿直线连续测量数据集。 - rir_NBI_em32.h5：采用32通道球形麦克风阵列Eigenmike（em32，mh Acoustics）采集的分布式房间冲激响应数据集。 - rir_NBI_em32.sofa：前述文件的SOFA格式版本。 房间概况 该礼堂体积约为126立方米，整体近似矩形，受众区域地面带有倾斜设计。测量时房间内已完整配备教室相关设备，一侧墙面分布有若干间隔设置的窗户。 倍频带混响时间T30如下： | 中心频率(Hz) | 32 | 63 | 126 | 250 | 500 | 1k | 2k | 4k | 8k | 16k | | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | | T30(s) | 0.75 | 0.74 | 0.61 | 0.72 | 0.80 | 0.88 | 1.03 | 1.05 | 0.85 | 0.58 | 测量方案 所有测量均采用覆盖20~20kHz频率范围的指数扫频信号，扫频的具体时长随测量配置有所差异，相关参数可在对应文件中查阅。采样率为48kHz。 声源采用双向扬声器（BM6，Dynaudio），在整个测量周期内其位置保持固定。本次测量使用的其余设备包括音频接口（Fireface UCX，RME）、扬声器放大器、麦克风放大器（Nexus，B&K）。 每组测量对应的大气条件均已收录在对应文件中。 关联出版物 本数据集关联的出版物为： Figueroa-Duran A. 与 Fernandez-Grande E.，《大空间域内混响声场的重构》，发表于《美国声学学会期刊》(J. Acoust. Soc. Am.) (2025)，https://doi.org/10.1121/10.0034833 联系方式 如有任何疑问，请致信 [e-mail]。