Is silence a sound or the absence of sound? When a tree falls in a forest and no one is there, is there a sound or not? Philosophy, but let’s be practical.
In our modern society, we are constantly assailed by sounds. As I type this at my son’s home in Ventura with the sliding doors open, I can hear the six lanes of traffic including buses and trucks just beyond the concrete block wall that separates his backyard from a busy thoroughfare. He sleeps with earplugs so that he can sleep. In Utah, we live in a blessedly quiet neighborhood next to a vacant lot that children sometimes use for play and adults use as a base for climbing a nearby rock formation. We can sometimes hear shooting from a nearby shooting range when the wind is right (or wrong), and we can hear the distant roar of jets passing overhead and hum of traffic from Interstate 15 a mile away.
The most relaxing sound I know is the sound of ordinary surf, not the surf of a storm. Sitting near the shore and listening to the ebb and flow, I can feel the tension draining from my mind and body. As I sit there, I can imagine the surf pulling the tension from my body with every receding wave. There is no sound so relaxing.