作さ動どう音おん

noun

operating sound; running noise

Refers to the sound produced by a machine, device, or system while it is running or functioning.

• 新あたらしい冷れい蔵ぞう庫こは作さ動どう音おんがとても静しずかだ。

  The new refrigerator's operating sound is very quiet.

• エアコンの作さ動どう音おんが気きになって眠ねむれない。

  The running noise of the air conditioner bothers me and I can't sleep.