PSYC 1200 Lecture Notes - Olfactory Bulb, Semicircular Canals, Phantom Limb
9 Dec 2013
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Document Summary
A wave of pressure caused by object vibrations, which causes vibration of air molecules. It is a perceptual experience; it does not exist separate from the perceiver. It requires a perceiver to have the sense organ that can detect the changes in air molecules. Higher amplitude is perceived as higher intensity sound. Amplitude determines loudness, which is measured in decibels (db). Determined by the wavelength of sound waves; the number of times per second that a wave will cycle through a high peak and a low point. Higher frequency is perceived as higher pitch sound (e. g. the sound of wind chimes). Lower frequency is perceived as lower pitch sound (e. g. the sound of a tuba). Determined by the ranges of wavelengths (or frequencies) in a sound waves perceived as a sound"s timbre. The same note on a trumpet, piano, flute, or violin sound different because they produce a different pattern of sound frequencies.
