What are the three big things that aud and speech path have in common?
1. aural rehab
2. aural habilitation
3. auditory processing disorder
What is an ENT called?
otolarygologist
what is the 'E" in ENT?
otologist
who is the father of audiology?
raymond carhart
who was mentored by the father of audiology?
james jerger
who is the mother of pediatric audiology?
marion downs
what are the 3 big parts of aud scope of practice?
electronystagmography
videonystagmagraphy
vestibular rehab
5 aud specialty areas
pediatric, medical, educational, rehabilitative, industrial
what does AAA stand for?
American Academy of Audiology
acoustics
objective study of sound
psychoacoustics
brain's interpretation of sound
3 pre req's of sound
source of energy
vibrating object
medium
concept of communication
generation
propagation
reception
speech chain
generation of speech
feedback link to the speaker
propagation of sound waves
reception
transmission
inertia
body stays in motion or at rest until it is put into motion/out of motion by an acting force
elasticity
The ability to be stretched or compressed and then return to original size
compression
air molecules tight - high pressure
rarefraction
air molecules apart - low pressure
transverse wave
particles move perpendicularly to the direction the wave travels
longitudinal wave
a wave in which the particles of the medium vibrate parallel to the direction of wave motion
what kind of wave is a sound wave?
longitudinal
what kind of wave is a sound wave displayed as?
transverse
sine wave
only one repetitive frequency source is present
what kind of wave is a pure tone
sine
frequency formula
1/T
period formula
1/F
short wave form = ____ frequency
high
long wave form = _____ frequency
low
speed of sound is governed by
properties of the medium
sound travels faster through a _____ medium
denser
3 influences on speed of sound through air
moisture/humidity
temperature
barometric pressure
measured by how many times a sequence is made in one second
frequency
what is psychoacoustic and subjective?
pitch
what is frequency measured in?
Hertz
3 characteristics that determine frequency
length
stiffness
mass
effect of length on frequency
longer the length of the wave, the lower the frequency
effect of stiffness on frequency
stiffer = higher
effect of mass on frequency
more mass = lower
resonance
every object has a frequency where it is most easily set into motion
humans perceive frequency as ________
pitch
speech range hz
1000-4000 Hz
octaves
250, 500, 1000, 2000, 4000, 8000
does aging impact hearing?
duh
wavelength changes with frequency... longer wavelength =
lower frequency
psychoacoustic perception of phase
timing
lower frequency = ____ period
higher
sound is created when
air molecules are disturbed
perceptually measured
pitch and loudness
physically measured
frequency
year of AAA
1988
intensity
relates to how hard a wave vibrates
increased force = increased ___
amplitude
range of human hearing
20-20,000 Hz
sound pressure level decibel
dB SPL
hearing level decibel
dB HL
sensation level decibel
dB SL
threshold
what a person can hear from minimal to maximum
If a sound is presented at 40dB SL above threshold and the presented tone is at 85 dBHL, what is the patient's threshold in dB HL?
45 dB HL
A patient has a 15 dB HL threshold. When a 30 dB HL tone is presented, what is the dB SL at which the tone was presented?
15 dB HL
If we present a tone at 100 dB HS and it is 45 dB SL above the patient's threshold. What is the patient's threshold in dB HL?
55 dB HL
dynamic range
smallest unit of sound just audible to highest level of sound that is tolerable
periodic sound
fundamental Hz
aperiodic sound
no repeating patterns, perceived as noise