LATEST UPDATED SHS 311 FINAL EXAM QUESTIONS
WITH ANSWERS GRADED A+
what is a psychometric function? How is threshold computed on a
psychometric function? - answer--relates a measure of listener's
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
-look at the detected percent (y-axis) in relation to the x-axis
what is the limitation of the method of constant stimuli? - answer-
response bias- expectations, experience, instructions, and other
situations that are not associated with sensitivity can affect the
listener's tendency to choose one response or the other which affects
the measured threshold
Objective psychophysics - answer-there is definitely "correct" or
"incorrect" answer
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 detectable for
the listener. What was the hearing threshold in micropascals for the
listener? - answer-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 end in Hz for discriminating a
difference in frequency from 900 Hz? - answer-90 Hz
What is the approximate Weber's Fraction in dB for intensity
discrimination? - answer-1 dB
What is 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 occur? - answer-beatings between the signal and the
second harmonic of the masker
the turning curve may indicate the shape of the internal auditory filter
centered on? - answer-signal frequency
If a 2 dB signal to noise ratio is required for tonal signal detection in
the presence of a broadband noise within 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? -
answer-2 dB
, what is a critical band? - answer-a frequency band centered on the
signal frequency, in which the masker can effectively mask the signal
what is the difference between backward and forward masking? -
answer-signal is before masker in backward masking, while masker is
before signal in forward masking
What is the theory used to explain localization in the azimuth plane? -
answer-duplex theory of localization
Minimal audible angle is smallest at? - answer-0 degree azimuth
in the precedence effect, what is taking precedence? - answer-the source
sound takes precedence over reflected sound in determining source
location
what does M(pie)So refer to? - answer-signal is inter aurally in phase,
masker is inter aurally 180 degrees out of phase
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? - answer-50 phons
what is a sone - answer-a measure of loudness
WITH ANSWERS GRADED A+
what is a psychometric function? How is threshold computed on a
psychometric function? - answer--relates a measure of listener's
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
-look at the detected percent (y-axis) in relation to the x-axis
what is the limitation of the method of constant stimuli? - answer-
response bias- expectations, experience, instructions, and other
situations that are not associated with sensitivity can affect the
listener's tendency to choose one response or the other which affects
the measured threshold
Objective psychophysics - answer-there is definitely "correct" or
"incorrect" answer
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 detectable for
the listener. What was the hearing threshold in micropascals for the
listener? - answer-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 end in Hz for discriminating a
difference in frequency from 900 Hz? - answer-90 Hz
What is the approximate Weber's Fraction in dB for intensity
discrimination? - answer-1 dB
What is 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 occur? - answer-beatings between the signal and the
second harmonic of the masker
the turning curve may indicate the shape of the internal auditory filter
centered on? - answer-signal frequency
If a 2 dB signal to noise ratio is required for tonal signal detection in
the presence of a broadband noise within 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? -
answer-2 dB
, what is a critical band? - answer-a frequency band centered on the
signal frequency, in which the masker can effectively mask the signal
what is the difference between backward and forward masking? -
answer-signal is before masker in backward masking, while masker is
before signal in forward masking
What is the theory used to explain localization in the azimuth plane? -
answer-duplex theory of localization
Minimal audible angle is smallest at? - answer-0 degree azimuth
in the precedence effect, what is taking precedence? - answer-the source
sound takes precedence over reflected sound in determining source
location
what does M(pie)So refer to? - answer-signal is inter aurally in phase,
masker is inter aurally 180 degrees out of phase
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? - answer-50 phons
what is a sone - answer-a measure of loudness
