hearing Flashcards
objective measure of hearing
frequency, amplitude
subjective measure of hearing
loudness, pitch, timbre
medium
air, water
source
respitory system, vocal tract
2 essential physical properties of medium and source
elasticisity and mass
simple harmonic motion
bi-phasic, cyclical
range of frequency for human
20-20,000
frequency
of cycle per second(Hz)
what determines frequency
mass, stiffness
periodic vs. aperiodic
repeat, not repeat
timbre
quality of sound
peripheral system
inner middle outer
central system
brainstem, cortex
outer ear
pinna, protection
apmlify
localization
middle ear
TM
inner
cochlea
basilar membrane
organ of corti
hair cells
organ of court
hearing organ
conductive hl
outer and middle ear
ear infection, to much hair, ear wax
sensorineural hl
inner ear
damage to hair cells
presbycusis
HL due to old age
central hl
problem in brain, age
normal hearing
20 db or less
tympanometry tesy
tests function of TM
OAE
otoaucustic emission
sounds cochlea produces
ABR
auditory BS response
used on infants
types of hearing aid
BE,In ear, in canal, completely in
analogue aid
radio
digital aid
computer
CI
implanted in cochlea
candidate
inner ear problem
over 12 month
cost
50,000
