soundwaves
pitch
caused by vibrating particles
amplitude
height of waves
loud = high amp
soft = low amp
pitch
tone’s experienced high/lowness, depends on frequency
frequency
number of wavelengths
low pitch/freq = bass
high pitch/freq = high
conduction hearing loss
damage to structures conducting waves thru outer and middle ear
eardrum, ossicle bones, auditory canal
sensorineural hearing loss/ nerve deafness
caused by damage to cochlea’s hair cells or auditory nerve
CANNOT BE REVERSED
place theory
high/lower tones excite specific places of cochlea basilar membrane
based on what part of cochlea responds to sound waves
front = high
deeper = lower
best explains how high pitches are sensed
frequency theory
brain detects pitch by monitoring frequency of neural impulses travling up auditory nerve
how low pitches are sensed
sound localization
how we identify wehre sounds are coming from
specific ear recieves more intense sound