Audio Moth

Recordings made with AudioMoth at 384ksps 16bit, low gain. The microphone is protected by a 3micron aluminised Mylar film. Recorded at Colney Heath Conservation Area (51.78263, -0.271419) at 20:16 BST on April 4 2018. The 4 minute long recording includes Nyctalus Leisleri (>20kHz), Pipistrellus pipistrellus(fm down to 45kHz), Pipistrellus pygmaeus (fm down to 52kHz) and Myotis daubentonii (broad fm down to 30kHz). The second recording also includes a Noctule and a possible Serotine at the same location. The .png screen shot shows a comparison of the same pass recorded on the Audio Moth at ground level angled at 45 degrees, and a Petterson M500-384 handheld at chest height.CHC18-1p_20180406_203333.wav and CHC18-1am2_20180406_203154.wav are overlapping recordings made with the AudioMoth and Petterson for direct comparison.本数据集的录音均采用AudioMoth设备采集，采样率384千样本每秒（384ksps）、采样深度16比特，工作于低增益模式。录音麦克风采用3微米镀铝Mylar薄膜进行防护。采集地点为科尔尼希斯保护区（Colney Heath Conservation Area），坐标为51.78263, -0.271419，首段录音的采集时间为2018年4月4日英国夏令时（BST）20:16，时长4分钟，涵盖的蝙蝠物种及对应回声定位声波特征如下：莱氏伏翼（Nyctalus leisleri，叫声频率大于20kHz）、普通伏翼（Pipistrellus pipistrellus，其调频（FM）声波最低降至45kHz）、侏伏翼（Pipistrellus pygmaeus，其调频声波最低降至52kHz）以及达氏鼠耳蝠（Myotis daubentonii，其宽带调频声波最低降至30kHz）。第二份录音同样在该地点采集，除上述物种外，还包含夜蝠（Noctule）以及疑似棕山蝠（Serotine）的叫声。本次提供的.png格式截图对比了两组相同飞行路径的录音：一组为AudioMoth设备在地面以45度角采集的信号，另一组为Petterson M500-384手持设备在胸部高度采集的信号。文件"CHC18-1p_20180406_203333.wav"与"CHC18-1am2_20180406_203154.wav"为同步重叠录音，分别由AudioMoth与Petterson设备采集，用于直接对比分析。