PSYC 2220 Chapter Notes - Chapter 5: Vestibulocochlear Nerve, Stapedius Muscle, Cochlear Implant
19 Dec 2017
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Document Summary
Sound- a certain physical event that produces the perceptual experience we know as hearing. Sound can be described as loudness and pitch. An object must be able to cause a vibrational disturbance to the air in order for it to make sound (it must possess inertia and elasticity) The rst condition of vibration is that once force is applied, the movement of the object is sustained due to inertia. Elasticity ensures that an object"s deformation caused by inertia does not continue beyond a certain extent. Vibrations are caused by the interaction of inertia and elasticity, where the object will move back and forth (vibrate) These vibrations occur in the form of sinusoidal functions (sinusoidal simple harmonic motion) Compression (increase in air pressure) and rarefaction occur as a result of the vibrations of the object. Each air particle acts as a seperate vibrator, colliding wit neighbouring particles which causes them to vibrate.
