SHS 311 Exam 3
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With Elaborated 100%
Correct Complete Solutions
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1. What is the dynamic range of hearing? - CORRECT ANSWER from the softest
sound level one can detect to the loudest sound level one can tolerate
2. If the power remains the same and the duration increases by a factor of
100, what happens to the sound's energy? - CORRECT ANSWER energy
increases by 20 dB
3. 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? - CORRECT ANSWER (0.1)(900Hz) = 90 Hz
4. What is the approximate Weber's Fraction in dB for intensity
discrimination? - CORRECT ANSWER 1 dB
5. What is the definition of masking? - CORRECT ANSWER The threshold for
detecting a sound is increased due to the presence of another sound
6. If a 1400-Hz masker is masking a 2803-Hz signal, what perceptual
phenomenon may occur? - CORRECT ANSWER Beatings between the signal
and the second harmonic of the masker
,7. The tuning curve may indicate the shape of the internal auditory filter
centered on _______? - CORRECT ANSWER signal frequency
8. If a 2-dB signal-to-noise ratio is required for tonal signal detection in the
presence of abroad band noise with a spectrum level of 50 dB, what is the
required signal-to-noise ratio for tonal signal detection if the spectrum level
of the broadband noise is increased by 10 dB? - CORRECT ANSWER 2 dB
9. What is a critical band? - CORRECT ANSWER A frequency band centered on
the signal frequency, in which the masker can effectively mask the signal
10.What is the difference between backward and forward masking? - CORRECT
ANSWER Signal is before masker in backward masking, while masker is
before signal in forward masking
11.What is the Theory used to explain Localization in the Azimuth Plane? -
CORRECT ANSWER Duplex theory of localization
12.Minimal Audible Angle is smallest at _________________? - CORRECT
ANSWER 0 degree azimuth
13.In the precedence effect, what is taking Precedence? - CORRECT ANSWER
The source sound takes precedence over reflected sound in determining
source location
,14.What does MπSo refer to? - CORRECT ANSWER Signal is interaurally in
phase, Masker is interaurally 180 degrees out of phase
15.If a 68 dB SPL sound is judged equally loud to a 50 dB SPL, 1000-Hz tone,
how loud is the 68 dB SPL sound? - CORRECT ANSWER 50 phons
16.What is a sone? - CORRECT ANSWER A measure of loudness
17.If a sound consists of the following spectral components: 375 Hz, 500 Hz,
625 Hz, 750 Hz, and 875 Hz. What is likely to be the perceived pitch in Hz? -
CORRECT ANSWER 125 Hz
18.Can temporal periodicity and spectral structure explain all of the
experimental data on pitch perception of complex sound? - CORRECT
ANSWER No
19.Psychophysics - CORRECT ANSWER the study of the relationship between
the physical variables of environmental objects and the sensation and
perception that they elicit
20.Objective Psychophysics - CORRECT ANSWER Tasks:
-Detection (correct and incorrect answers)
-Discrimination
-Recognition
Goal:
What CAN a listener hear?
, 21.Subjective Psychophysics - CORRECT ANSWER Tasks:
-Sensory Scaling
-Matching
Goal:
What DOES a listener hear? (no correct/incorrect answers)
22.Absolute threshold - CORRECT ANSWER The stimulus amplitude that an
observer can barely detect
23.Difference threshold - CORRECT ANSWER The minimum change from a
constant stimulus parameter value that produces a noticeable perceptual
difference
Ex: minimal audible angle
24.What is a psychometric function? How is threshold computed on a
psychometric function? - CORRECT ANSWER -Relates a measure of listeners
performance to a measure of the stimulus and describes the performance
of your hearing as a physical parameter
-Look at the detected percent (y-axis) in relation to the x-axis
-Relates a measure of listeners performance(e.g., percent of time that a
stimulus is detected) to a measure of the stimulus (e.g., stimulus intensity
level); describes the performance of your hearing as a physical parameter
25.What is the limitation of the method of constant stimuli? - CORRECT
ANSWER The threshold is supposed to represent a measure of the
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!!
1. What is the dynamic range of hearing? - CORRECT ANSWER from the softest
sound level one can detect to the loudest sound level one can tolerate
2. If the power remains the same and the duration increases by a factor of
100, what happens to the sound's energy? - CORRECT ANSWER energy
increases by 20 dB
3. 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? - CORRECT ANSWER (0.1)(900Hz) = 90 Hz
4. What is the approximate Weber's Fraction in dB for intensity
discrimination? - CORRECT ANSWER 1 dB
5. What is the definition of masking? - CORRECT ANSWER The threshold for
detecting a sound is increased due to the presence of another sound
6. If a 1400-Hz masker is masking a 2803-Hz signal, what perceptual
phenomenon may occur? - CORRECT ANSWER Beatings between the signal
and the second harmonic of the masker
,7. The tuning curve may indicate the shape of the internal auditory filter
centered on _______? - CORRECT ANSWER signal frequency
8. If a 2-dB signal-to-noise ratio is required for tonal signal detection in the
presence of abroad band noise with a spectrum level of 50 dB, what is the
required signal-to-noise ratio for tonal signal detection if the spectrum level
of the broadband noise is increased by 10 dB? - CORRECT ANSWER 2 dB
9. What is a critical band? - CORRECT ANSWER A frequency band centered on
the signal frequency, in which the masker can effectively mask the signal
10.What is the difference between backward and forward masking? - CORRECT
ANSWER Signal is before masker in backward masking, while masker is
before signal in forward masking
11.What is the Theory used to explain Localization in the Azimuth Plane? -
CORRECT ANSWER Duplex theory of localization
12.Minimal Audible Angle is smallest at _________________? - CORRECT
ANSWER 0 degree azimuth
13.In the precedence effect, what is taking Precedence? - CORRECT ANSWER
The source sound takes precedence over reflected sound in determining
source location
,14.What does MπSo refer to? - CORRECT ANSWER Signal is interaurally in
phase, Masker is interaurally 180 degrees out of phase
15.If a 68 dB SPL sound is judged equally loud to a 50 dB SPL, 1000-Hz tone,
how loud is the 68 dB SPL sound? - CORRECT ANSWER 50 phons
16.What is a sone? - CORRECT ANSWER A measure of loudness
17.If a sound consists of the following spectral components: 375 Hz, 500 Hz,
625 Hz, 750 Hz, and 875 Hz. What is likely to be the perceived pitch in Hz? -
CORRECT ANSWER 125 Hz
18.Can temporal periodicity and spectral structure explain all of the
experimental data on pitch perception of complex sound? - CORRECT
ANSWER No
19.Psychophysics - CORRECT ANSWER the study of the relationship between
the physical variables of environmental objects and the sensation and
perception that they elicit
20.Objective Psychophysics - CORRECT ANSWER Tasks:
-Detection (correct and incorrect answers)
-Discrimination
-Recognition
Goal:
What CAN a listener hear?
, 21.Subjective Psychophysics - CORRECT ANSWER Tasks:
-Sensory Scaling
-Matching
Goal:
What DOES a listener hear? (no correct/incorrect answers)
22.Absolute threshold - CORRECT ANSWER The stimulus amplitude that an
observer can barely detect
23.Difference threshold - CORRECT ANSWER The minimum change from a
constant stimulus parameter value that produces a noticeable perceptual
difference
Ex: minimal audible angle
24.What is a psychometric function? How is threshold computed on a
psychometric function? - CORRECT ANSWER -Relates a measure of listeners
performance to a measure of the stimulus and describes the performance
of your hearing as a physical parameter
-Look at the detected percent (y-axis) in relation to the x-axis
-Relates a measure of listeners performance(e.g., percent of time that a
stimulus is detected) to a measure of the stimulus (e.g., stimulus intensity
level); describes the performance of your hearing as a physical parameter
25.What is the limitation of the method of constant stimuli? - CORRECT
ANSWER The threshold is supposed to represent a measure of the
