This is white noise generated from the open source Android app Chroma Doze, https://github.com/pmarks-net/chromadoze, with the pitch set more towards the lower end of the spectrum.
來自Chroma Doza的白噪聲
聲道：1
類型：mp3
ambient、background-sound、white-noise、general-noise、whitenoise
周圍、背景音、白噪聲、一般噪音、白噪聲
資料來源：freesound ( https://freesound.org )