Refrigerator hum from inside closed refrigerator. Recorded in mono mp3 mode on a Zoom H2. The recorder then created a 2-track file (and I assume both tracks are identical). Compressed and normalized to -3.1 db in Audacity. Exported in flac mode.
RefrigHum_Inside_2min.flac
聲道：2
類型：flac
kitchen、refrigerator、fridge、appliance、household、noise
廚房、冰箱、冰箱、器具、家庭、噪聲
資料來源：freesound ( https://freesound.org )