SHS 311- Exam 2 Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With Elaborated 100% Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
The Central Auditory Nervous System (CANS)
What are the two parts of the Auditory System?
Peripheral Auditory System
Which auditory system is "the brain part"? The Central Auditory Nervous System (CANS)
Which auditory system is "the ear part"? Peripheral Auditory System
What is included in The Central Auditory Nervous System
Cortex, thalamus, midbrain, & brainstem
(CANS) ?
Cochlea (Outer Ear, MiddleEar, Inner Ear, and Auditory
What is included in the Peripheral Auditory System?
Nerve)
1.) Increases sensitivity to sound
2.) Provides neural code for sounds so CANS can analyze
What 3 major tasks does the Peripheral Auditory System
code
accomplish?
3.) Provides compressed neural representation of large
dynamic range of sound levels
What type of frequencies does the peripheral auditory
Particularly frequencies important for speech
system naturally boost?
directs sound to middle ear
localization of sound
Primary function of the outer ear
amplifies or attenuates sound (filter)
protection (curves/narrowing & cerumen)
2000 Hz-4000 Hz
Outer ear frequency range & decibles boost:
20 dB
Matches impedance ditterence between air and fluid of
Primary function of middle ear
inner ear to ettectively deliver sound vibration to inner ear
800 Hz-1000 Hz
Middle ear frequency range & decible boost:
30 dB
Helps it from being overdriven by excessively strong vibra-
How does the middle ear protect the inner ear?
tions (protects from loud noises)
Primary function of inner ear Transduction of sound vibration into the neural code
, SHS 311- Exam 2 Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With Elaborated 100% Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
ear converts sound waves in the air into electrical impuls-
Auditory transduction
es, which can be interpreted by the brain
Primary function of auditory nerve transmits neural code of sound to the brainstem
Pinna (auricle) & external auditory meatus (EMA-outer ear
Anatomy of the outer ear
canal)
Function of the pinna Provides cues for sound location
sound from a specific location is altered by a person's
Head related transfer function (HRTF)
head, torso, and ears before it reaches the eardrums
Input signal = every frequency at same amplitude White noise
Right ear is closer to sound source = output of frequencies
is higher
What happens if the sound input is closer to the right ear?
Sound/head shadow for left ear = output of frequencies
is lower
What happens if sound source is directly in front or above Sound is not blocked, ears are getting the same info. =
you? output signal is the same
Resonator- gives a boost to high frequency consonants &
Function of the ear canal (external auditory meatus)
sounds that are most important to speech
When sound enters the outer ear canal, part of it will be
reflected by the Tympanic membrane or eardrum. When
How is a standing wave created in the Ear canal?
the original soundwave and reflected soundwave meet at
a certain frequency, there will be a standing wave.
standing waves caused by the outer ear (input + reflected
The resonance in the ear canal results from the:
wave)
Resonant frequency of Ear canal sound speed/(4*length) = 3800 Hz
What is the average frequency an adult ear can hear? 20-20,000 Hz
Frequently Tested Questions With Elaborated 100% Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
The Central Auditory Nervous System (CANS)
What are the two parts of the Auditory System?
Peripheral Auditory System
Which auditory system is "the brain part"? The Central Auditory Nervous System (CANS)
Which auditory system is "the ear part"? Peripheral Auditory System
What is included in The Central Auditory Nervous System
Cortex, thalamus, midbrain, & brainstem
(CANS) ?
Cochlea (Outer Ear, MiddleEar, Inner Ear, and Auditory
What is included in the Peripheral Auditory System?
Nerve)
1.) Increases sensitivity to sound
2.) Provides neural code for sounds so CANS can analyze
What 3 major tasks does the Peripheral Auditory System
code
accomplish?
3.) Provides compressed neural representation of large
dynamic range of sound levels
What type of frequencies does the peripheral auditory
Particularly frequencies important for speech
system naturally boost?
directs sound to middle ear
localization of sound
Primary function of the outer ear
amplifies or attenuates sound (filter)
protection (curves/narrowing & cerumen)
2000 Hz-4000 Hz
Outer ear frequency range & decibles boost:
20 dB
Matches impedance ditterence between air and fluid of
Primary function of middle ear
inner ear to ettectively deliver sound vibration to inner ear
800 Hz-1000 Hz
Middle ear frequency range & decible boost:
30 dB
Helps it from being overdriven by excessively strong vibra-
How does the middle ear protect the inner ear?
tions (protects from loud noises)
Primary function of inner ear Transduction of sound vibration into the neural code
, SHS 311- Exam 2 Comprehensive Resource To Help You Ace 2026-2027 Exams Includes
Frequently Tested Questions With Elaborated 100% Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
ear converts sound waves in the air into electrical impuls-
Auditory transduction
es, which can be interpreted by the brain
Primary function of auditory nerve transmits neural code of sound to the brainstem
Pinna (auricle) & external auditory meatus (EMA-outer ear
Anatomy of the outer ear
canal)
Function of the pinna Provides cues for sound location
sound from a specific location is altered by a person's
Head related transfer function (HRTF)
head, torso, and ears before it reaches the eardrums
Input signal = every frequency at same amplitude White noise
Right ear is closer to sound source = output of frequencies
is higher
What happens if the sound input is closer to the right ear?
Sound/head shadow for left ear = output of frequencies
is lower
What happens if sound source is directly in front or above Sound is not blocked, ears are getting the same info. =
you? output signal is the same
Resonator- gives a boost to high frequency consonants &
Function of the ear canal (external auditory meatus)
sounds that are most important to speech
When sound enters the outer ear canal, part of it will be
reflected by the Tympanic membrane or eardrum. When
How is a standing wave created in the Ear canal?
the original soundwave and reflected soundwave meet at
a certain frequency, there will be a standing wave.
standing waves caused by the outer ear (input + reflected
The resonance in the ear canal results from the:
wave)
Resonant frequency of Ear canal sound speed/(4*length) = 3800 Hz
What is the average frequency an adult ear can hear? 20-20,000 Hz
