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35 Cards in this Set
- Front
- Back
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(Differential sensitivity; Weber's Law; Weber fraction) If the just noticeable difference (jnd) for a 1000 Hz frequency is 2 Hz
The weber fraction is 2 Hz The weber fraction is 2/1000=0.2% The weber fraction is 2 dB The weber fraction is 1000/2=500 |
The weber fraction is 2/1000=0.2%
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If a tone at 61 dB SPL is just perceived to be louder than a tone at 60 dB SPL
The weber fraction is 1/60 The jnd is 1 dB The weber fraction is 1 dB The weber fraction is 60/61 |
The jnd is 1 dB
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Temporal modulation transfer function of normal hearing
is expressed in modulation depth in dB as a function of modulation rate shows that rapid sound fluctuations are not heard very well shows that we are most sensitive to amplitude modulations that are slower than 50 Hz all of above |
all of above
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In detection of a probe tone with fixed level and frequency, the experimenter measures at various frequencies the level required of a masking tone just enough to mask the probe tone. The plot of the measured level of the masking tone against the frequency of the masking tone is called a:
masking pattern of the masking tone psychphysical tuning curve compound neural tuning curve psychophysical PST histogram |
psychphysical tuning curve
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In detection of a probe tone in the presence of a masking tone with a fixed level and frequency, the experimenter measures the level required of the probe tone to be just detectable at various frequencies. The plot of the measured level of the probe tone against the frequency of the probe tone is called a:
masking pattern of the masking tone psychphysical tuning curve compound neural tuning curve psychophysical PST histogram |
masking pattern of the masking tone
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Which of the following is(are) correct
Critical band reflects the frequency analysis ability of the auditroy system Tone-on-tone masking pattern shows 'upward spread of masking' 'beating' between a probe tone and a masking tone when they are close in frequency can actually make the probe tone easier to detect All of above |
All of above
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The width or size of the auditory internal filter is about
half that of the center frequency 10% of the center frequency 0.2% of the center frequency none of the above |
10% of the center frequency
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The auditory internal filter or critical band has been estimated by measuring the threshold for detecting a tone masked by
a band of noise with its bandwidth varied as the independent variable a notched noise with the width of the notch varied as the independent variable All of above None of above |
All of above
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As an experimenter presents a brief probe tone either before, during, or after a relatively long masking noise, the experimenter is expected to observe three types of masking in the following order
two-tone suppression; tone-in-noise masking; two-tone suppression again upward-spread of masking; localized masking; down-ward spread of masking backward masking; simultaneous masking; forward masking forward masking; simultaneous masking; backward masking |
backward masking; simultaneous masking; forward masking
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Localization in the horizontal plane is mostly based on
interaural time differences (ITD) interaural level differences (ILD) Both ITD and ILD HRTFs |
Both ITD and ILD
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Interaural time difference is useful mostly for
localization at high frequencies localization at low frequencies localization in the vertical plane distance perception |
localization at low frequencies
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Interaural level difference (ILD) is useful mostly for
localization at high frequencies localization at low frequencies localization in the vertical plane distance perception |
localization at high frequencies
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The frequency region where human localization is subject to large error is around
100 Hz 400 Hz 2000 Hz 4000 Hz |
2000 Hz
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Which of the following statement(s) is(are) true about lateralization:
It allows researchers to study ITD and ILD cues individually in the lab It refers to binural hearing using earphones It is typically associated with sound images created inside rather than outside the head but with special signal processing the image can be created outside the head. All of above |
All of above
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Masking level difference (MLD) can be produced in conditions in which the maskers and signals presented to the two ears meet the following requirement(s)
Maskers in phase; signals also in phase Maskers in opposite phase; signals in phase Maskers in opposite phase; signals also in opposite phase Maskers random phase; signals also random phase |
Maskers in opposite phase; signals in phase
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Which of the following statements best describes loudness recruitment?
Loudness recruitment refers to rapid growth of loudness with stimulus level Loudness recruitment can be observed with a normal ear for a tone presented against a masking noise Loudness recruitment can be observed with an impaired ear for a tone presented in quiet All of above |
All of above
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(Based on Figure 13.1) What is the level of a 4000-Hz tone that has the same loudness as a 1000-Hz tone at 60-dB SPL?
60 dB SPL 53 dB dB SPL 53 phon 60 sones |
53 dB dB SPL
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Based on Figure 13.2(a)) What is the loudness in sone of a tone at 1000 Hz and 80 dB SPL?
4 sones 16 sones 40 sones 80 sones |
16 sones
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What is the pitch of a complex sound that has a strong periodicity showing a period of 5 msec?
100 Hz 200 Hz 500 Hz 1000 Hz |
200 Hz
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When the fundamental component is taken away from a harmonic complex tone
the pitch will disappear the pitch will go up the pitch will go down the pitch will remain the same |
the pitch will remain the same
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The pitch of a harmonic complex tone is determined by
the fundamental frequency the phase relation among the harmonics the relative amplitude of the fundamental component to the harmonics frequency components above 5000 Hz |
the fundamental frequency
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Which of the following is/are correct?
A. The absolute sensitivity or threshold of audibilit can be obtained from a measured psychometric function B. A psychometric function is expressed as the percentage of correct detection as a function of signal level C. The threshold is defined as the signal level that produces a certain percent correct (e.g. 75%) on the psychometric function D.All of above |
D.All of above
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Threshold in hearing level (HL in dB) is defined as being equal to
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threshold in dB SPL minus the standardized threshold in dB SPL (which is based
on the average threshold of the population) |
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threshold in dB SPL minus the standardized threshold in dB SPL (which is based
on the average threshold of the population) |
a decrease in threshold
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difference between MAF and MAP
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MAF- loudspeaker
MAP-headphones |
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difference between thresholds in dB SPL & dB HL.
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Subtract what you can hear form the sound presented. If its 0 there's no hearing loss.
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How is threshold related to the psychometric function?
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It corresponds to a single point usually in the middle around at 50%
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How does threshold depend on signal frequency?
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Cereal bowl- lower/higher frequencies have higher thresholds
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How do you explain the shape of the threshold-frequency curve or function?
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has to do with outer ear and middle ear boost
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(temporal integration) How does threshold depend on signal duration?
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Signal will go down if you increase the duration.
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How is the upper limit of hearing defined?
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pain/discomfort
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How is the dynamic range of hearing defined?
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Threshold of pain minus threshold of hearing
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Around what frequencies is the dynamic range maximum for normal ears?
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mid frequencies
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How is JND defined?
How does JND depend on frequency? |
just noticible difference
As frequency increases JND exponentially increases |
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How is Weber fraction defined?
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JND/frequency
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