The actual definition of quietness including the non-existence of sound waves and pressures and all of this exists only in outer space..... What you mean is only the theoretical quietness...... do we agree on this?
And this theoretical quietness like down here for instance is interrupted by the noises on the street no matter how far they were, the sound of our footsteps, the sound of your breath and mine and your heartbeats.... No matter how you got used to them and forgot about their existence....
For examples the sound of the clock ticking, the sound of that fridge and the sound of this computer fan.....The sound of that Neon lamp... you got so used to these sounds that they are now a part of you; you won’t realize their importance unless they disappear