Noise power level in the vehicle interior under different conditions

We acquired the acoustic data (sound power level in dBV) in the vehicle interior (Citroen C4 Lounge) using a setup without an audio source (only noise).<br><br>The setup is a low-cost setup with a ReSpeaker Core v1 (MT7688) board using the Analog-to-Digital Converter (ADC) AC108 with four ADC delta-sigma, 48 kHz of sample rate, and 3.3 V voltage range, with four microphones connected to a Raspberry Pi 3 (model B) processor to collect and store the data. It was used only the first channel (only one microphone).<br>This setup is positioned on the panel car, inside the cabin, similar to the position of the multimedia microphone.<br><br>Please consider citing our paper if you use any part of the available data:<br>Flor, D.; Pena, D.; Pena, L.; A. de Sousa, V., Jr.; Martins, A. Characterization of Noise Level Inside a Vehicle under Different Conditions. <em>Sensors</em> 2020, <em>20</em>, 2471. https://doi.org/10.3390/s20092471<br>

本研究采用无外置音频源（仅采集环境噪声）的实验装置，采集了雪铁龙C4 Lounge（Citroen C4 Lounge）车内的声学数据（声功率级，单位为dBV）。

本实验装置为低成本搭建方案，采用搭载模数转换器（Analog-to-Digital Converter, ADC）AC108的ReSpeaker Core v1（MT7688）开发板，该转换器具备四路ΔΣ型ADC、48kHz采样率与3.3V电压量程；装置通过四路麦克风连接至树莓派3 B型（Raspberry Pi 3 model B）处理器以采集并存储数据，实验过程中仅启用第一通道（单麦克风）。

该装置安装于车内仪表板区域，布置位置与车载多媒体麦克风的安装位置一致。

若您使用本数据集的任意内容，请引用以下论文：
Flor, D.; Pena, D.; Pena, L.; A. de Sousa, V., Jr.; Martins, A. 不同工况下车辆内部噪声水平表征. 《Sensors》, 2020, 第20卷, 第2471页. https://doi.org/10.3390/s20092471