Database: Recordings of a Loudspeaker Orchestra with Multi-Channel Microphone Arrays for the Evaluation of Spatial Audio Method

For a comparative physical and perceptual evaluation of conceptually different binaural rendering techniques, recordings are needed in which all other factors affecting the sound, such as the sound radiation of the sources, the room acoustic environment and the recording position are kept constant. To provide such a recording, the sound field of an 18-channel loudspeaker orchestra fed by anechoic recordings of a chamber orchestra was captured in two rooms with nine different receivers. In addition, impulse responses were recorded for each sound source and receiver. The anechoic audio signals, the full loudspeaker orchestra recordings and all measured impulse responses are available with open access in the SOFA 2.1 (AES69-2022) format.为对概念迥异的双耳渲染（binaural rendering）技术开展物理与感知层面的对比评估，需要构建所有影响声音的其他因素均保持恒定的录音场景，这些影响因素包括声源的声辐射特性、房间声学环境以及录音位置。为搭建这类符合要求的录音场景，研究人员在两个房间内，使用九种不同的接收装置采集了由室内管弦乐团无回声录音驱动的18通道扬声器阵列的声场。此外，研究人员还为每一组声源与接收装置录制了脉冲响应（impulse response）。本数据集包含的无回声音频信号、完整扬声器阵列录音以及所有实测脉冲响应，均以SOFA 2.1（AES69-2022）格式开放获取。