SHS 311 EXAM 3.
From question to perfection| Study with confidence!
There is a definitely "correct" or "incorrect" answer. What task is this? - Answer: Objective
psychophysics
In the following psychometric function, what is the threshold level for 50% signal
detection? - Answer: 12 dB SPL
In the following stimulus-response table, what is the percent correct?
Response "YES" Response "NO"
Signal 60 (hit) 40(miss)
(total = 100)
No Signal
50(false alarm) 50(correct rejection)
(total = 100) - Answer: (Hit Rate + Correct Rejection Rate) / 2
(60% + 50%) / 2
(0.60 + 0.50) / 2
1. = .55
55%
During the calibration of the MAP procedure, 0.5 volts of input to the headphone produced
100 micropascals of sound pressure measure by the microphone inside the manikin.
During testing, 0.1 volts of input to the headphone produced a sound pressure that was just
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, detectable for the listener. What was the hearing threshold in micropascals for the
listener? - Answer: Threshold Voltage / Calibration Voltage =Threshold Pressure /
Calibration Pressure
0.5/0.1 = 5
100/5 = 20
20 micropascals
what is the dynamic range of hearing? - Answer: from the softest sound level one can
detect to the loudest sound level one can tolerate
If the power remains the same and the duration increases by a factor of 100, what happens
to the sound's energy? - Answer: energy increases by 20 dB
If the Weber's Fraction for frequency discrimination is 0.1, and the base frequency is 900
Hz, what is the jnd in Hz for discriminating a difference in frequency from 900 Hz? - Answer:
(0.1)(900Hz) = 90 Hz
What is the approximate Weber's Fraction in dB for intensity discrimination? - Answer: 1 dB
What is the definition of masking? - Answer: The threshold for detecting a sound is
increased due to the presence of another sound
If a 1400-Hz masker is masking a 2803-Hz signal, what perceptual phenomenon may
occur? - Answer: Beatings between the signal and the second harmonic of the masker
The tuning curve may indicate the shape of the internal auditory filter centered on _______?
- Answer: signal frequency
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From question to perfection| Study with confidence!
There is a definitely "correct" or "incorrect" answer. What task is this? - Answer: Objective
psychophysics
In the following psychometric function, what is the threshold level for 50% signal
detection? - Answer: 12 dB SPL
In the following stimulus-response table, what is the percent correct?
Response "YES" Response "NO"
Signal 60 (hit) 40(miss)
(total = 100)
No Signal
50(false alarm) 50(correct rejection)
(total = 100) - Answer: (Hit Rate + Correct Rejection Rate) / 2
(60% + 50%) / 2
(0.60 + 0.50) / 2
1. = .55
55%
During the calibration of the MAP procedure, 0.5 volts of input to the headphone produced
100 micropascals of sound pressure measure by the microphone inside the manikin.
During testing, 0.1 volts of input to the headphone produced a sound pressure that was just
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, detectable for the listener. What was the hearing threshold in micropascals for the
listener? - Answer: Threshold Voltage / Calibration Voltage =Threshold Pressure /
Calibration Pressure
0.5/0.1 = 5
100/5 = 20
20 micropascals
what is the dynamic range of hearing? - Answer: from the softest sound level one can
detect to the loudest sound level one can tolerate
If the power remains the same and the duration increases by a factor of 100, what happens
to the sound's energy? - Answer: energy increases by 20 dB
If the Weber's Fraction for frequency discrimination is 0.1, and the base frequency is 900
Hz, what is the jnd in Hz for discriminating a difference in frequency from 900 Hz? - Answer:
(0.1)(900Hz) = 90 Hz
What is the approximate Weber's Fraction in dB for intensity discrimination? - Answer: 1 dB
What is the definition of masking? - Answer: The threshold for detecting a sound is
increased due to the presence of another sound
If a 1400-Hz masker is masking a 2803-Hz signal, what perceptual phenomenon may
occur? - Answer: Beatings between the signal and the second harmonic of the masker
The tuning curve may indicate the shape of the internal auditory filter centered on _______?
- Answer: signal frequency
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