Transparent to the thousands of transmissions our brains process daily, the envelope of sound works diligently.
As animals we are highly effected by the sounds we encounter as we move around this life, but many we become accustomed to and process them to a back-level of our existence. You hear the sound and then you acknowledge it. The next door neighbor turns the engine of his truck every morning around the same time. You may hear the truck start and you say to yourself, that's the neighbor starting his truck.
But the truck starting is not really important to you, yet deep in your mind it is a comforting sound. It is a sound that says everything is alright, all is on schedule and moving through the daily run of life as expected. You may hear a siren and then a series of sirens in the distance. You know there is the morning traffic, people rushing to work and there was probably another wreck. You have heard the sirens on mornings and evenings many times before and associate them with commuter wrecks.
Now a helicopter passes over and because you heard a lot of sirens you wonder if it might be a news crew. Or, it could be the Coast Guard or life-flight due to a bad accident. Now there is just the hum of some traffic in the far distance; the commute hours have passed. You breath and you hear it. The cat sits at your feet and he bathes himself, you hear his tongue moving smoothly over his solid black hair, think how clean cats keep themselves. He purrs and it vibrates the room.
When you hear sounds your brain wants to process and identify them. Every sound has a home and the human brain strives to find that home and place the sound there. It would be accurate to say most people process their daily sounds seamlessly in the background, and only display profound reactions when a sound is unexpected, or very loud, or a significant disruption perhaps associated with visuals that enhance the experience.
You hear a train whistle now and it makes you feel lonely or wanting of something, but the rush of an 18 wheeler truck cascades in and the train is very distant. Now though you hear it faintly again. Where is the train going and what does it carry? Your brain processes tens of thousands of sounds a day, a combination of human voices, music, machinery, weather, animals. It reaches put and grabs a noise, a sound and puts it in its place.
If you take comfort in your daily canvas of sounds you are content, even when times sounds may be disturbing, disruptive. You are your sounds, the cacophony envelope that surrounds you. And now you pause and think about it, how most of the time it is a given, taken for granted, expected and often demanded.
Rather sound is a rare gift and it will pass. To really hear it now is truely the moment.