Sound Wave as a Mechanical Wave
When a vibrating object goes ahead, it compresses and pushes the air in front of it, creating a high-pressure zone known as compression (C). When a vibrating object goes backward, it creates a low-pressure zone known as rarefaction (R). A vibrating item that causes compression (C) and rarefaction (R) .The particles in these waves move back and forth parallel to the disturbance’s propagation path, Longitudinal waves are the name for these types of waves. Another type of wave is known as transverse waves, the particles oscillate up and down perpendicular to the propagation of the disturbance direction in these waves. In a medium, sound propagates as a succession of compressions (C) and uncommon fractions (R). The higher component of the curve, known as the crest, represents compressions, which are places of high pressure and density where the particles are crowded. Rarefactions are low-pressure, low-density areas where particles are dispersed, and they are represented by the trough portion of the curve.
Sound Frequency
- The frequency of a sound wave is defined as the number of oscillations per unit time.
- The SI unit for it is hertz (Hz)
Human Ear
It has been discovered that sound is a type of energy. Vibrations cause it to happen. Longitudinal waves are sound waves. Because they are elastic waves, they must be transmitted through a material medium. They can move through solids, liquids, and gases. In solids, their velocity is greatest, whereas, in gases, it is lowest.
In our daily lives, we hear a variety of sounds, including pleasant ones known as musical sounds, noise, loud sound, high-pitched sound, and other unpleasant sounds are examples. The majority of mammals on Earth have an external ear. Our auditory system includes the ear. The pinna is the part of the ear that is visible from the outside. Humans, like other mammals, have ears. The temporal bones of the skull house the ears on both sides of the brain. Before discussing the human ear and its range of hearing first we’ll discuss the production of sound and sound waves.
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