Psychology 2115A/B Quiz: Psych 2115 - Quiz 2

• School: Western University
• Department: Psychology
• Course: Psychology 2115A/B
• Professor: Philippe Chouinard

Document Summary

Stimulus for audition: changes in the pressure of the air as the result of some sort of vibration. Vibration of a physical object that sends out sound waves to your ear: ex. Banging a tuning fork sends the vibrations forward and they bounce back: sets up a pattern of rising and falling in the pressure of the air molecules. Increased frequency = decreased wavelength and vice versa: 2. Amplitude: how far up and down we go on the pressure axis: amplitude relates to loudness, measured in bels, decibels tenths of bels, ex. Hitting the tuning fork harder increases the amplitude: 3. Phase: the relationship between two sound waves that have the same amplitude and the same frequency: measured in degrees, 360o in a circle 180o is completely out of phase, ex. Hit the tuning fork, hit another identical tuning fork at a different point in time.