Sound is present all around us. It enhances the experience of life by connecting us to one another It allows us to communicate, collaborate and live together. Sound can regenerate old memories, invoke different layers of emotion and bring us into present awareness. Sound is something that is with us in every moment of each day yet so often we negate its existence and importance.
Sound, just as it has different levels of volume also has different layers of density. Not all sounds that we experience are audible. To make sense of this easier lets break sound done a little more. Sound has been shown to be in its simplest form a vibration. Vibration essentially is energy in its singular form moving through matter. As waves of energy disturb particles of matter these particles begin to move, going up and down like a wave. Imagine floating balls on a water’s surface moving with swell and waves. This wave moves with the force of air which takes the vibration of the matter (an object) and cause them to travel. When this wave of vibration makes it to our eardrums it embarks on a bio-acoustic process in which it is transformed into a chemical form, then electrical impulses as it travels through our brain.
So in short, a sound always occurs when there is a vibration. There are tangible, audible sounds and then sounds that fly under and over the radar of what our ears can interpret.
Humans can only hear sounds generated by vibrations between 15Hz and 20,000 Hz. These are called audible sounds. Majority of adults will only be able to hear sounds up to about 16,000 Hz due to exposure to loud sounds throughout our lives. Sounds below our range of hearing are referred to as infra-sounds whilst those above are ultrasound.
It has been shown that everything is in a state of vibration. Even the most subtle of occurrences emits vibration. The planets moving through space, an ant walking across the ground, even the cells that make up our body emit vibrations.
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