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SHS 311 Exam 3 Review
Terms in this set (85)
With a listener's given criterion, the correct rejection rate is 0.56. The false positive rate is therefore __________.
For a listener, the misses are 0.24. The hit rate is therefore __________.
With a listener's given criterion, the correct rejection rate is 0.47. The false positive rate is therefore _________.
Which of the following is considered to be free of listener bias?
2-Interval, 2-Alternative Forced Choice
A subject in a listening experiment states that a signal is not present, but it was. Which category does their answer fall into?
A subject in a listening experiment states that a signal was present, but it was not. Which of the following categories does their answer fall into?
A subject in a listening experiment states that a signal was not present. It was not present. Which of the following categories does their answer fall into?
A subject in a listening experiment states that a signal was present. It was present. Which of the following categories does their answer fall into?
When discussing signal detection theory, which of the following terms refers to how far apart the signal and the signal+noise distributions are?
In psychoacoustics, we study the _______________ characterisitics of sound
Temporal integration means that thresholds are ________ for a shorter tone than a longer one.
MAP curves reflect minimum audibility for thresholds in the soundfield.
The difference between the MAP and MAF curves in the 1000-1600 range (notably the big dip in the MAF) is due to:
Ther inclusion of ear canal resonances in the MAF measurements
Use the equal loudness figure to answer:
What is the loudness level of a 500 Hz tone at 80 dB SPL?
Use the equal loudness figure to answer:
What is the loudness level of a 125 Hz tone at 60 dB SPL?
A __________ is the unit for loudness level
A __________ is the unit for loudness
What term describes the subjective quality of sound when loudness, pitch, and duration are the same?
Which of the following statements is true about the relationship between pitch and intensity?
-Pitch is dependent on intensity in that low-frequency sounds are perceived as lower in pitch as intensity increases.
(IMPORTANT: Tones above 4000 Hz: Pitch increases with increasing level is also the case)
The listener hears a 60 phons tone. Suddenly, that loudness level increases to 80 phons. What happens to the listener's perception of loudness?
It goes from 4 sones to 16 sones
in general, if a masker and signal are closer together in frequency, it will be __________ to mask the signal that if they are further apart in frequency.
In our listening experiment, the signal is 1800 Hz. Is that more likely to be masked by a 2400 Hz masker or a 1600 Hz masker?
Masking patterns are _______________ at higher levels, indicating a greater spread of excitation at higher levels
_______________ refers to determinin the source or direction of sound in space
_________________ refers to determining the source of a sound within the head/ears
Is binaural integreation/summation greater (in dB) at threshold or at suprathreshold levels?
Central masking is mediated by different mechanisms than masking at the level of the basiliar membrane.
When considering lateralization, if a sound is more intense in the right ear, which ear will the sound lateralize to?
When considering lateralization, if the presentation of a sound leads in the left ear, which ear will the sound lateralize to?
What is a consequence of impaired temporal resolution
All of the above
Which of the following was discussed as being affected by audibility?
B and C
(Gap Detection and Frequency Difference Limens)
In a choclear dead region, what is missing?
Inner and Outer Hair Cells
Temporal resolution in listeners with cochlear hearing loss is unaffected by presentation level.
Are interaural differences more effective at low or high frequencies?
Are interaural time differences more effective at low or high frequencies?
Does localization or laterralization refer to the process that happens in the open environment?
Is gap detection better at low or high frequencies?
Are auditory filters wider at low or high frequencies?
If modulation rate is faster, then a greater modulation depth is needed to be able to detect modulation
A masker that is ____________ in frequency than the signal will be more effective
Difference Limens for Frequency (DLF) ___________ as frequency increases
Doubling of frequency causes ____________ of a doubling of pitch
Equal loudness contours (loudness matching) uses the units of:
Loudness recruitment is a concern with:
Both A and B
(Conductive Hearing Loss and Sensorineural Hearing Loss)
The study of sensory perception
What are the phsyical perameters?
Frequency and Intensity
What are the Perceptual Judgement characteristics?
Pitch and Loudness
What can we study with psychoacoustics? (#1)
Absolute sensitivty of the ear
What can we study with psychoacoustics? (#2)
What can we study with psychoacoustics? (#3)
What can we study with psychoacoustics? (#4)
What can we study with psychoacoustics? (#5)
Localization of sounds in space
What can we study with psychoacoustics? (#6)
Pitch and music perception
What can we study with psychoacoustics? (#7)
The effects of noise on hearing
What can we study with psychoacoustics? (#8)
The influence of hearing loss
What is the overall difference between MAP and MAF?
Measurement techniques, as well as MAP only testing one ear while MAF tests both
Which testing uses headphones?
Which testing uses speakers?
Which form of testing includes ear canal resonances?
Which form of testing includes binaural advantages?
What is temporal integration?
The effect of duration on threshold
As duration increases what is the approximate effect on threshold (in dB)?
threshold decreases until about 500 dB
What is the methods of limits?
how we test in the clinic
How is the methods of limits performed?
Examiner adjusts the level up and down based on the listener's responses until reaching threshold.
What are the two ways to evaluate loudness?
loudness matching and loudness scaling
When it comes to the equal loudness contour, what does one of the contours represent?
Each contour represents a sound played at a different volume
How would you determine the loudness of a sound?
Play standard tone and comparison tone. The task is to indicate the loudness of the comparison tone with a number. If it is n times as loud as the standard tone, one should assign a loudness number of n.
When it comes to loudness scaling, what happens when loudness is above 40 dB?
Once above 40 dB SPL (or loudness above 40 phons), loudness doubles with a 10 dB increase in intensity.
What are the effects of level on pitch?
Tones below 2000 Hz decrease with increasing level, tones above 4000 Hz increase with increasing level
What is the relationship between pitch and duration?
The longer the duration, the more "accurate" pitch perception becomes
What is the relationship between pitch and perception?
low-frequency sounds perceived as lower in pitch as intensity increases.
What is the unit of pitch?
What is the Difference Limen for Frequency (DLF)?
The smallest detectable change in the frequency of a tone.
How is DLF measured?
Present two pure-tones with slightly different frequencies. Listener judges which one has the higher pitch.
What is a consonance of complex stimuli?
Notes paired together which sound "pleasent"
What is dissonance of a complex stimuli?
Notes paired together which sound "unpleasent"
What is masking?
a signal is made inaudible or less audible by another signal present at the same time or very close in time
What is a probe?
The signal to be detected by the listener
What is the masker?
What causes the signal to be less audible
How are psychophysical tuning curves measured?
Masking is used to measure psychophysical tuning curves
What is temporal processing?
The use of time information present in the acoustic signal
What is an example of how we usethe temporal information within speech? (#1)
Taking advantage of longer duration signals (temporal integration)
What is an example of how we usethe temporal information within speech? (#2)
The use of the temporal fine structure of the auditory structure
How is bias represented?
Conservative and Liberal
(if it is conservative the decision line moves right, if it is liberal it moves left)
How is sensitivity represented?
by the distance of the signal and annoyed distributions
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