Hearing & Communication Final Exam
1.normal hearing levels for a child is - , screen at - in schools
because of too much background noise: 0-10, 20-25 (won't catch HL)
2.what do we know about kids in the schools?: do not have fully
functional central auditory system, do not have fully developed
language system
3.the goal of a + dB signal to noise ratio is rarely achieved and this
is especially true for children not sitting near the teacher: 15
4.if the noise in the classroom is 60 dB, the teacher's voice would have to
be maintained at dB throughout the entire classroom: 75, very unlikely
w/o technology
5.audiogram 80/20 rule for 1000 Hz: lower than 1000 Hz = 20% of info,
80% of power
above 1000 Hz = 80% of info, 20% of power
6.true or false: when a teacher does raise their voice (without technology)
to improve the signal to noise ratio, the impact on unvoiced speech sounds
is minimal: true
7.what can be done to improve listening situation for children in classroom?
: signal - level (fm system)
noise - competing signals (carpet, panels)
reverberation time - time it takes a signal to decrease in intensity
8.the recommended reverberation time for schools is seconds, and
seconds for children with hearing loss
% of schools don't come close to this reverberation time: .5,
.3 90%
9.reasons why more attention is not given to acoustics in schools:
negative impact on appearance
expense
designer must have additional expertise
people that design schools are adults with a fully developed system
(don't see a problem)
misconception that visual > auditory
10.a very effective tool for achieving the +15 dB S/N ratio
amplifies unvoiced sounds, maximum cognitive load devoted to learning
con- cepts: fm classroom system
11.goals of a hearing aid: make speech sounds audible without
introducing un- wanted distortion or discomfort
restoring range of loudness
, Hearing & Communication Final Exam
12.hearing aid limitations: doesn't repair functions of the
cochlea doesn't return hearing sensitivity to normal
doesn't return speech discrimination to normal
13.implement these strategies in a conversation with a person who has
a hearing loss: (1) introduce the topic
(2)face to face conversation
(3)minimize background noise
(4)project voice
(5)speak at a deliberate rate, not too quickly
14.different styles of hearing aids: ITE, CIC, canal, full-shell, BTE with
standard earmold, open-fit with slim tube, and RIC
15.: ITE
16.: CIC
17.: canal
18.: full-shell
19.: BTE
, Hearing & Communication Final Exam
20.: open fit with slim tube
21.: RIC
22.current hearing aids have a that continuously evaluates the
acoustic environment to adapt processing of the signal to the current
situ- ation: computer chip
23.hearing aid benefits: improves audibility of specific speech
sounds improves audibility of non-speech sounds
enhances the individual's ability to communicate at work, socially, and
with family
24.true or false: the HA makes the user a better listener: false
25.components of a hearing aid: microphone, computer chip, receiver,
battery, switch, telecoil, volume control, program button, vent, battery
door
26.microphone: converts acoustic energy to electrical energy
27.computer chip: amplifies and processes the signal based on the
individual's hearing loss
28.receiver (HA): converts the electrical signal to acoustic energy
29.battery: replaceable or rechargeable
30.telecoil: takes electromagnetic energy produced by a device to
better under- stand
31.vent: sounds travel through to ear canal to (1) take advantage of
where they have good hearing and (2) make it comfortable
32.hearing aid characteristics: frequency response, gain, MPO
33.frequency response: connecting all the gains
1.normal hearing levels for a child is - , screen at - in schools
because of too much background noise: 0-10, 20-25 (won't catch HL)
2.what do we know about kids in the schools?: do not have fully
functional central auditory system, do not have fully developed
language system
3.the goal of a + dB signal to noise ratio is rarely achieved and this
is especially true for children not sitting near the teacher: 15
4.if the noise in the classroom is 60 dB, the teacher's voice would have to
be maintained at dB throughout the entire classroom: 75, very unlikely
w/o technology
5.audiogram 80/20 rule for 1000 Hz: lower than 1000 Hz = 20% of info,
80% of power
above 1000 Hz = 80% of info, 20% of power
6.true or false: when a teacher does raise their voice (without technology)
to improve the signal to noise ratio, the impact on unvoiced speech sounds
is minimal: true
7.what can be done to improve listening situation for children in classroom?
: signal - level (fm system)
noise - competing signals (carpet, panels)
reverberation time - time it takes a signal to decrease in intensity
8.the recommended reverberation time for schools is seconds, and
seconds for children with hearing loss
% of schools don't come close to this reverberation time: .5,
.3 90%
9.reasons why more attention is not given to acoustics in schools:
negative impact on appearance
expense
designer must have additional expertise
people that design schools are adults with a fully developed system
(don't see a problem)
misconception that visual > auditory
10.a very effective tool for achieving the +15 dB S/N ratio
amplifies unvoiced sounds, maximum cognitive load devoted to learning
con- cepts: fm classroom system
11.goals of a hearing aid: make speech sounds audible without
introducing un- wanted distortion or discomfort
restoring range of loudness
, Hearing & Communication Final Exam
12.hearing aid limitations: doesn't repair functions of the
cochlea doesn't return hearing sensitivity to normal
doesn't return speech discrimination to normal
13.implement these strategies in a conversation with a person who has
a hearing loss: (1) introduce the topic
(2)face to face conversation
(3)minimize background noise
(4)project voice
(5)speak at a deliberate rate, not too quickly
14.different styles of hearing aids: ITE, CIC, canal, full-shell, BTE with
standard earmold, open-fit with slim tube, and RIC
15.: ITE
16.: CIC
17.: canal
18.: full-shell
19.: BTE
, Hearing & Communication Final Exam
20.: open fit with slim tube
21.: RIC
22.current hearing aids have a that continuously evaluates the
acoustic environment to adapt processing of the signal to the current
situ- ation: computer chip
23.hearing aid benefits: improves audibility of specific speech
sounds improves audibility of non-speech sounds
enhances the individual's ability to communicate at work, socially, and
with family
24.true or false: the HA makes the user a better listener: false
25.components of a hearing aid: microphone, computer chip, receiver,
battery, switch, telecoil, volume control, program button, vent, battery
door
26.microphone: converts acoustic energy to electrical energy
27.computer chip: amplifies and processes the signal based on the
individual's hearing loss
28.receiver (HA): converts the electrical signal to acoustic energy
29.battery: replaceable or rechargeable
30.telecoil: takes electromagnetic energy produced by a device to
better under- stand
31.vent: sounds travel through to ear canal to (1) take advantage of
where they have good hearing and (2) make it comfortable
32.hearing aid characteristics: frequency response, gain, MPO
33.frequency response: connecting all the gains
