I12 - distinction) d. amplitude - intensity of energy in a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Physiology of Hearing and Equilibrium I. Physical Characteristics of Sound A. Sound as Vibration of Air Molecules Traveling in Waves 1. vibration of medium - sound travels in compression waves through a particular medium a. solid-------------> liquid ----------------> gas fastest slowest 2. sound as a wave - the series of high pressure and low pressure areas are called “compressions” and “rarefactions”, respectively a. sine wave - graphic representation of areas of compression and rarefaction of a sound wave b. wavelength - the distance between 2 areas of compression for a given sound wave c. frequency - the number of waves that pass a given point in one second (1/s = 1 Hertz) i. short wavelength/high frequency - high pitched tones ii. long wavelength/low frequency - low pitched tones iii. human frequency range - 20Hz - 20,000 Hz (2-3 Hz
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: distinction) d. amplitude - intensity of energy in a given wave of sound; signified by height of sine wave i. loudness - subjective interpretation of the intensity of a sound ii. decibel - logarithmic scale to measure the intensity of sound waves Energy in the Sound Wave Perceived Loudness 0 dB threshold for audibility barely audible 10 dB l0 X 0 dB 2 X 0 dB 20 dB 100 X 0 dB 4 X 0 dB 30 dB 1000 X 0 dB 8 X 0 dB 40 dB 10,000 X 0 dB 16 X 0 dB iii. human amplitude range - 0 dB - 120 dB (130 dB = pain level) Physiology of Hearing and Equilibrium II. Transmission of Sound to the Inner Ear air --> external auditory canal --> tympanic membrane (ear drum) --> ossicles (malleus, incus, stapes.) --> oval window of cochlea --> vibration of cochlear fluid --> basilar membrane of cochlea...
View Full Document

Page1 / 2

I12 - distinction) d. amplitude - intensity of energy in a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online