NROC64H3 Chapter 11: chapter 11 - auditory system
Document Summary
The sense of hearing is known as audition and the sense of balance is regulated by the vestibular system. When an object moves toward a patch of air, it compresses the air, increasing the density of the molecules. The air is rarefied when an object moves away on the other hand (see fig. 11. 1). y the speed of sound is about 343 m/sec (767 mph) for air at room temperature. Frequency of sound is the number of compressed or rarefied patches of air that pass by our ears each second. 11. 2) y our auditory system can respond to pressure waves between 20 hz to 20 000 hz. y whether a sound is perceived to have a high or low tone (i. e. pitch) is determined by its frequency. Intensity is the difference in pressure between compressed and rarefied patches of air (fig. Sound intensity determines the loudness we perceive loud sounds having higher intensity.
