CSD-210 UNIT 5 REVIEW QUESTIONS AND
ANSWERS LATEST UPDATE
Psychoacoustics: what are the stimulus characteristics of auditory sensitivity
Frequency, duration/timing, intensity
Frequency: what frequencies are humans most sensitive to?
1,000-5,000 Hz
What frequencies are humans least sensitive to?
<100 Hz and >10,000 Hz
Sensitivity improves as duration ______
Increases (it takes times to recognize the differences in an onset signal)
What is the most comfortable hearing range? (for a normal hearing person)
50 dB
What is the maximum tolerable level? (for a normal hearing person)
120-140 dB
What is a hearing threshold?
It is the lowest level at which a person can hear, at that threshold the stimulus night not
always be detected
What is the percentage of times that tones are detected?
50% of stimulus
What are the three testing methods used to measure hearing threshold?
-Method of limits
-Method of adjustment
-Method of constant stimuli
Describe the Method of Limits
The tester controls the intensity of stimulus change in fixed steps in one direct
Describe Bracketing
It is increasing or decreasing stimulus level until a change is reached
- ex. when administering a hearing test you might start with a 50 dB sound that is
detected so you increase it by 5 dB, and so one until they notice the sound
describe the method of adjustment
the subject/client adjusts the intensity on their own
-the client will also utilize bracketing (not in the same way in the method if limits like the
tester) but they will increase and decrease the sound until they hear a change
Describe the Method of Constant Stimuli
Sound is presented randomly and responses are tallied at multiple different levels
What is the problem with the Method of Constant Stimuli?
It is very accurate, but inefficient
How are the results conveyed after conducting the Method of Constant Stimuli
The results are plotted in a percentage of time that each level of stimulus was detected
How is hearing affected by age
Hearing worsens with age
What age so you start loosing your hearing
around 25-30 years old
ANSWERS LATEST UPDATE
Psychoacoustics: what are the stimulus characteristics of auditory sensitivity
Frequency, duration/timing, intensity
Frequency: what frequencies are humans most sensitive to?
1,000-5,000 Hz
What frequencies are humans least sensitive to?
<100 Hz and >10,000 Hz
Sensitivity improves as duration ______
Increases (it takes times to recognize the differences in an onset signal)
What is the most comfortable hearing range? (for a normal hearing person)
50 dB
What is the maximum tolerable level? (for a normal hearing person)
120-140 dB
What is a hearing threshold?
It is the lowest level at which a person can hear, at that threshold the stimulus night not
always be detected
What is the percentage of times that tones are detected?
50% of stimulus
What are the three testing methods used to measure hearing threshold?
-Method of limits
-Method of adjustment
-Method of constant stimuli
Describe the Method of Limits
The tester controls the intensity of stimulus change in fixed steps in one direct
Describe Bracketing
It is increasing or decreasing stimulus level until a change is reached
- ex. when administering a hearing test you might start with a 50 dB sound that is
detected so you increase it by 5 dB, and so one until they notice the sound
describe the method of adjustment
the subject/client adjusts the intensity on their own
-the client will also utilize bracketing (not in the same way in the method if limits like the
tester) but they will increase and decrease the sound until they hear a change
Describe the Method of Constant Stimuli
Sound is presented randomly and responses are tallied at multiple different levels
What is the problem with the Method of Constant Stimuli?
It is very accurate, but inefficient
How are the results conveyed after conducting the Method of Constant Stimuli
The results are plotted in a percentage of time that each level of stimulus was detected
How is hearing affected by age
Hearing worsens with age
What age so you start loosing your hearing
around 25-30 years old
