PSYB51H3 Chapter 9: PSYB51 Chapter 9
15 Jul 2011
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Document Summary
Sounds are created when objects vibrate causing molecules and objects surrounding medium to vibrate which causes pressure changes in the medium these pressure changes are described as waves. sound waves travel faster through denser substances in error 340 m/s, and water 1500 m/s. Basic qualities of sound waves: frequency and amplitude. Soundwaves that we here are fluctuations in air pressure across time. We typically described sound wave patterns by noting how quickly the pressure. The amount of sound energy ball in on a unit area. Magnitude of displacement of a sound pressure waves or of a head fluctuates; the rate of fluctuation is known as the frequency. Amplitude is associated with the perceptual quality of loudness (psychological aspect of sound related to perceived intensity or magnitude) Frequency is associated with pitch (psychological aspect of sound related mainly to the fundamental frequency) Relatively young people are able to detect sounds that vary from about 20 to.
