PSYC 100 Lecture Notes - Lecture 10: Sound, Basilar Membrane, Axon

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

Psyc week 10; sensation and perception 3, perception. This vibration causes adjacent air molecules to become compressed into local regions of increases pressure, and rarefied in local regions of decreased pressure. These pressure changes can travel through the air to our ears in a wave. The amplitude of a sound wave determines its intensity. Instead of using the term wavelength, the term frequency is used when talking about sound. These different frequencies can be shown in a spectrum, similar to looking at color spectrums. Intensity cue: different in timbre based on location. Frequency: the number of peaks per second (the inverse of wavelength) Spectrum: a graph showing the different component frequencies (or wavelengths) in a sound (or a source of light) Periods: the amount of time required for one cycle of a sound wave to pass a particular point. The wavelength is the distance that the sound travels in one cycle.