PSYCH 3313 Chapter Notes - Chapter 7: Cochlear Duct, Eardrum, Auditory Cortex
5 Oct 2016
School
Department
Course
Professor
Document Summary
Sets off waves of vibration in form of miniature collisions between adjacent molecules that produce outwardly moving bands of high and low pressure. Amplitude the height of a wave; perceived as loudness. Frequency the number of cycles of a periodic wave per unit of time; perceived as pitch. Pure tone sound characterized by a single frequency. Timbre distinct quality of a sound due to combinations of frequencies. Decibel (db) a unit used to express a difference in intensity between two sounds, equal to 20 times the common logarithm of the ration of the two levels. Hertz (hz) a unit of sound frequency equal to one cycle per second. Infrasound sound at frequencies below the range of human hearing, or lower than about 20 hz. Ultrasound sound at frequencies above the range of human hearing, or higher than about 20,000 hz: the structure and function of the auditory system. Pinna the visible part of the outer ear.
