Microwave oven tone, ambience
A quiet room tone with a low end frequency ambient background.
A quiet room tone with an ambient empty background and heavy air conditioner hum.
Long high pitch noise modulating quickly
Mid pitch tone modulating quickly and phasing
Deep low pitched spaceship ambience slowly modulating
Clothes washer Start Fill with Hum
Dishwasher Drain with Gargle and Swish and Hum