Microwave hum, followed by 5 beeps, then door open & close. 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.
Microwave4minutes_DoorOpenClose.flac
聲道：2
類型：flac
noncommercial、shutting、microwave、manual、power、oven、door
非商業性、關閉、微波、手冊、功率、烤箱、由
資料來源：freesound ( https://freesound.org )