PSYCH 1XX3 Lecture Notes - Lecture 10: Basilar Membrane, Sound, Vocal Folds
21 Apr 2020
School
Department
Course
Professor
Document Summary
), a sudden burst of air (a clap), or by forcing air past a small cavity (pipe organ). The eardrum responds to air pressure changes: this causes the air molecules surrounding the source of sound to move, causing a chain reaction of moving air particles. Sound waves: the three physical characteristics of a wave examined in light amplitude, wavelength, and purity can be applied to sound waves and translate into the three psychological properties of loudness, pitch, and timbre. Amplitude - measurement of loudness: variations in the amplitude (height) of a sound wave affect the perception of loudness . Even brief exposure to sounds this loud can cause physical pain and permanent damage. Timber measurement of complexity/purity: purity affects our perception of timbre. Most of the sounds we hear every day are complex sounds that are composed of multiple sound waves that vary in frequency. Timbre refers to the complexity of a sound: e. g.
