Exam key + Chapter 10 Hearing in the Environment - Wolfe - Updated Test Bank | Sensation & Perception 6e Wolfe by Jeremy Wolfe. DOCX document preview.

Exam key + Chapter 10 Hearing in the Environment - Wolfe

Test Bank

by Evan M. Palmer

to accompany

Sensation & Perception, Sixth Edition

Wolfe • Kluender • Levi • Bartoshuk • Herz • Klatzky • Merfeld

Chapter 10: Hearing in the Environment

Multiple Choice

1. The _______ is the difference in time between a sound arriving at one ear versus the other and helps us localize sound.

a. azimuth

b. interaural time difference

c. interaural level difference

d. cone of confusion

e. sound shadow

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 1. Remembering

2. The azimuth is the

a. distance between the sound and the ears.

b. location of the sound in space.

c. angle of a sound source on the horizontal plane relative to a point in the center of the head between the ears.

d. idea that the ears receive slightly different inputs when the sound source is located to one side or the other.

e. difference in time between a sound arriving at one ear versus the other.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 1. Remembering

3. Suppose you are in the woods and hear a high-pitched screech (above 1000 Hz). Which auditory localization cue will help you determine where the sound came from?

a. Interaural timbre difference

b. Interaural attack difference

c. Interaural decay difference

d. Interaural level difference

e. Interaural time difference

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 3. Applying

4. Refer to the figure.

An illustration lists the interaural time differences at different azimuth positions around the head. At 0 degrees, it is 0 microseconds. At 20 degrees, it is 200 microseconds. At 60 degrees, it is 480 microseconds. At 90 degrees, it is 640 microseconds. At 120 degrees, it is 480 microseconds. At 160 degrees, it is 200 microseconds. At 180 degrees, it is 0 microseconds. At minus 160 degrees, it is minus 200 microseconds. At minus 120 degrees, it is minus 480 microseconds. At minus 90 degrees, it is minus 640 microseconds. At minus 60 degrees, it is minus 480 microseconds. At minus 20 degrees, it is minus 200 microseconds.

The blue circles in this interaural time difference diagram refer to locations from which sound reaches the _______ first.

a. right ear

b. left ear

c. brain stem

d. pons

e. superior olive

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

5. Which method(s) of sound localization between the two ears is/are used most often for tones of very low frequencies?

a. Interaural time difference

b. Interaural level difference

c. Interaural frequency difference

d. Interaural echo difference

e. Both interaural time and level differences

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

6. Which method(s) of sound localization between the two ears is/are used most often for tones of very high frequencies?

a. Interaural time difference

b. Interaural level difference

c. Interaural frequency difference

d. Interaural echo difference

e. Both interaural time and level differences

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

7. Refer to the graph.

An illustration shows separate graphs for interaural level differences for tones of different frequencies presented at different positions around the head. The horizontal axis measures the direction of the sound source from the front to the back of the head from 0 to 180 degrees. The vertical axis measures the interaural level difference from 0 to 10 decibels. Graphs have been captured for sound frequencies of 6000, 5000, 4000, 3000, 2500, 1800, 1000, 500, and 200 Hertz.

This graph shows _______ for tones of different frequencies presented at different positions around the head.

a. interaural level differences

b. cones of confusion

c. pitch differences

d. loudness differences

e. interaural time differences

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

8. Which direction on the azimuth would have the largest interaural time difference?

a. 0°

b. 30°

c. 60°

d. 90°

e. 120°

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 3. Applying

9. _______ refers to the region of positions in space where all the sounds produce the same time and level (intensity) differences.

a. Cochlear region

b. Sound source

c. Cone of confusion

d. Medial region

e. Azimuth

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

10. Which of the following do(es) not contribute to sound localization?

a. Interaural time difference

b. Interaural level difference

c. Lateral superior olives

d. The cone of confusion

e. Turning the head

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 2. Understanding

11. Refer to the figure.

Illustration explains localization concerning head movement. Illustration A shows a human head with the region around it divided into four quarters. A blue frog is the source of a sound in the front left quarter region and a red frog is the source of a sound in the back-left quarter region. The sound from the blue frog has the same interaural time difference and interaural level difference as the sound from the red frog because both frogs are in the same cone of confusion. Illustration B shows the case when the listener rotates his head slightly to the left. The interaural time difference and interaural level difference are now no longer consistent with the blue frog. But an ambiguity remains. The interaural time difference and interaural level difference are now consistent with the blue frog and a red frog next to it. The first and the second set of interaural time differences and interaural level differences are consistent only with the location of the blue frog.

What concept does this figure illustrate?

a. Sound ambiguities cannot be resolved even if the observer turns their head.

b. After hearing a noise, people usually turn their heads reflexively.

c. Interaural time differences do not allow for sound localization.

d. Interaural level differences do not allow for sound localization.

e. Turning one’s head can help with sound localization.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.2 Explain how the auditory system uses pinnae and head cues to localize sounds.

Bloom’s Level: 3. Applying

12. The _______ is a function that describes how the pinna, ear canal, head, and torso change the intensity of sounds with different frequencies that arrive at each ear from different locations in space.

a. combination function

b. directional transfer function

c. inverse-square law

d. localization function

e. azimuth

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.2 Explain how the auditory system uses pinnae and head cues to localize sounds.

Bloom’s Level: 1. Remembering

13. Refer to the graphs.

Graphs depicting directional transfer functions. Illustration A shows a graph that plots the differences in intensity at the eardrum for sounds of different frequencies that are played from a speaker that is placed 30 degrees to the left of the listener and 12 degrees above the head. A microphone placed near the eardrum picks up the sound. The horizontal axis of the graph measures frequency from 200 to 10,000 Hertz. The vertical axis measures magnitude from minus 5 to 15 decibels in steps of 5 decibels. The graph shows that some frequencies such as 500 Hertz are intense at the eardrum but frequencies at 800 and 9000 Hertz are not so intense. Illustration B shows a graph that plots a series of direction transfer functions when the speaker is moved up and down in elevation for the same azimuth. It is observed that the intensities of the frequencies reaching the eardrum continuously change with changes in elevation and azimuth.

These graphs illustrate the

a. cone of confusion.

b. localization functions.

c. combination functions.

d. inverse-square law.

e. directional transfer functions.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.2 Explain how the auditory system uses pinnae and head cues to localize sounds.

Bloom’s Level: 2. Understanding

14. If someone’s lateral superior olive structures are destroyed, they are most likely to experience difficulty using

a. interaural time differences to localize low-frequency sounds.

b. interaural time differences to localize high-frequency sounds.

c. interaural level differences to localize low-frequency sounds.

d. interaural level differences to localize high-frequency sounds.

e. timbre to localize low-frequency sounds.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 3. Applying

15. If someone’s medial superior olive structures are destroyed, they are most likely to experience difficulty using

a. interaural time differences to localize low-frequency sounds.

b. interaural time differences to localize high-frequency sounds.

c. interaural level differences to localize low-frequency sounds.

d. interaural level differences to localize high-frequency sounds.

e. timbre to localize low-frequency sounds.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 3. Applying

16. The _______ is the relay station in the brain stem where inputs from both ears contribute to the detection of interaural time differences.

a. medial superior olive

b. cochlea

c. pons

d. lateral superior olive

e. frontal lobe

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 1. Remembering

17. The _______ is a relay station in the brain stem where inputs from both ears contribute to the detection of interaural level differences.

a. medial superior olive

b. cochlea

c. pons

d. lateral superior olive

e. hypothalamus

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 1. Remembering

18. Neurons that are sensitive to intensity differences between the two ears can be found in the

a. medial superior olives.

b. lateral superior olives.

c. brain stem.

d. cochlear muscles.

e. ossicles.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 1. Remembering

19. Damage to which structure would specifically impair computations of interaural time differences?

a. Cochlear nucleus

b. Lateral superior olive

c. Medial superior olive

d. Medial nucleus of the trapezoid body

e. Inferior colliculus

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 3. Applying

20. Damage to which structure would specifically impair computations of interaural level differences?

a. Cochlear nucleus

b. Lateral superior olive

c. Medial superior olive

d. Medial nucleus of the trapezoid body

e. Inferior colliculus

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.3 Describe the brain circuits used to localize sounds.

Bloom’s Level: 3. Applying

21. According to the inverse-square law, as distance from a source _______, intensity _______ faster such that the _______ in intensity is the distance squared.

a. increases; increases; increase

b. decreases; decreases; decrease

c. decreases; decreases; increase

d. increases; decreases; decrease

e. increases; increases; decrease

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.4 Describe how listeners can judge the distance of sounds.

Bloom’s Level: 1. Remembering

22. Refer to the figure.

An illustration showing sound bouncing in a theater. The illustration shows a lady performing with a guitar on a stage. Two audience members are seated. The sound from the musician bounces off the walls and surfaces in the theater before reaching the listener in the audience in what is called reverberant energy. When a neighbor speaks to an audience member, the sound reaches the listener as direct energy. Reverberant and direct energy informs the listener about the relative distances of the two sound sources.

This figure demonstrates that the relative amounts of direct and reverberant energy coming from the listener’s neighbor and the singer will inform him of the

a. location of the prime sound source.

b. intensity level of the sound source.

c. time it takes for sound to arrive to his ears.

d. relative distances of the two sound sources.

e. absolute distance of the direct energy source.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.4 Describe how listeners can judge the distance of sounds.

Bloom’s Level: 2. Understanding

23. Suppose you get a new ear piercing that dramatically changes the shape of your pinna and causes you to have trouble localizing sounds. From which direction will you have the hardest time localizing sounds, and why?

a. Sounds from the side, due to changes in interaural time differences

b. Sounds from the side, due to changes in interaural level differences

c. Sounds from above, due to changes in interaural time differences

d. Sounds from above, due to changes in interaural level differences

e. Sounds from above, due to changes in the direction transfer function

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.4 Describe how listeners can judge the distance of sounds.

Bloom’s Level: 5. Evaluating

24. Which term describes the spectrum of a complex sound in which energy is at integer multiples of the fundamental frequency?

a. Inverse-square law

b. Harmonic spectrum

c. Missing fundamental

d. Resonance

e. Timbre

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.1 Describe the concept of a harmonic spectrum.

Bloom’s Level: 1. Remembering

25. _______ is the lowest-frequency component of a complex periodic sound.

a. Harmonic sound

b. Missing fundamental

c. Fundamental frequency

d. Timbre

e. Pitch

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.2 Explain the concept of a fundamental frequency.

Bloom’s Level: 1. Remembering

26. Refer to the figure.

A graph showing the harmonics 1 to 24 and its amplitude in decibels. The harmonics range in frequency from 0 to 6000 Hertz. When the fundamental harmonic or harmonic 1 with the lowest frequency is removed and the others are presented to an auditory system, listeners still hear the pitch of the missing fundamental.

Even if the lowest frequency of a harmonic sound is removed (as in the figure), listeners still hear the pitch of this

a. timbre.

b. missing fundamental.

c. vibration.

d. attack.

e. chord.

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.2 Explain the concept of a fundamental frequency.

Bloom’s Level: 2. Understanding

27. Refer to the figure.

Illustration explaining how listeners seem to perceive the missing fundamental. Illustration A shows a graph of harmonics and its amplitude in decibels. Harmonics 2, 3, and 4 are presented to listeners without the fundamental frequency. Listeners can still hear the pitch of the fundamental frequency. Illustration B shows the waveform of harmonics 2, 3, and 4 which have a frequency of 500, 750, and 1000 Hertz. Illustration B also shows the waveform of all three frequencies combined which comes into alignment every 4 milliseconds. This happens to be the period of the fundamental frequency of 250 Hertz. This explains why listeners perceive the complex tone to be 250 Hertz, even though the specific tone is missing.

This figure demonstrates that when only three harmonics of the same fundamental frequency are presented (B–D), listeners still hear the pitch of the fundamental frequency because the harmonics all

a. share a common energy fluctuation of 250 Hz.

b. have the same intensity.

c. occur at the same time.

d. peak at the same amplitude which changes the frequency into a 250-Hz signal.

e. share the same pitch.

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.2 Explain the concept of a fundamental frequency.

Bloom’s Level: 2. Understanding

28. _______ is the psychological sensation by which a listener can judge that two sounds with the same loudness and pitch are dissimilar.

a. Attack

b. Decay

c. Timbre

d. Consonance

e. Dissonance

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.3 Define timbre.

Bloom’s Level: 1. Remembering

29. _______ is the complex quality of sound that lets us distinguish a note played on the piano from the same note played on a trumpet.

a. Consonance

b. Dissonance

c. Attack

d. Decay

e. Timbre

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.3 Define timbre.

Bloom’s Level: 3. Applying

30. The part of a sound during which amplitude increases is known as

a. decay.

b. start note.

c. attack.

d. octave.

e. pitch.

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.4 Define the concepts of attack and decay.

Bloom’s Level: 1. Remembering

31. The part of a sound during which amplitude decreases is known as

a. instrumental decrease.

b. sound decline.

c. end note.

d. decay.

e. tone.

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.4 Define the concepts of attack and decay.

Bloom’s Level: 1. Remembering

32. When you pluck the string on a violin rather than use a bow to play the same note, which sound aspect is the most different?

a. Attack

b. Decay

c. Tone

d. Octave

e. Fundamental frequency

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.2.4 Define the concepts of attack and decay.

Bloom’s Level: 3. Applying

33. Source segregation involves the

a. distinction of various harmonic sounds in the broader environment.

b. tuning to one particular sound.

c. combination of various harmonic sounds into one.

d. missing fundamental.

e. distinction of auditory events in the broader environment.

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.1 Explain the concept of auditory scene analysis.

Bloom’s Level: 2. Understanding

34. _______ is the perceptual organization of a complex acoustic signal into separate auditory events.

a. Auditory stream segregation

b. Source segregation

c. Harmonic sound perception

d. Grouping by onset

e. Acoustic grouping

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.1 Explain the concept of auditory scene analysis.

Bloom’s Level: 1. Remembering

35. Which of the following describes the phenomenon of, for example, being able to identify the different instruments in a composition based on their distinctive sound characteristics?

a. Grouping by onset

b. Grouping by timbre

c. Grouping by continuity

d. Grouping by decay

e. Restoration effects

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.1 Explain the concept of auditory scene analysis.

Bloom’s Level: 3. Applying

36. A very simple example of auditory stream segregation involves two tones with similar frequencies that are

a. played continuously together.

b. alternated.

c. started together at the same time.

d. different in amplitude.

e. missing fundamentals.

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.2 Describe the ways in which the auditory system performs auditory stream segregation.

Bloom’s Level: 2. Understanding

37. Which of the following does not contribute to auditory stream segregation?

a. The perceived locations of the sound sources

b. The onset of the different sound sources

c. The timbre of the different sound sources

d. The pitch of the different sound sources

e. The different sound sources added together

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.2 Describe the ways in which the auditory system performs auditory stream segregation.

Bloom’s Level: 1. Remembering

38. Which of the following describes the phenomenon of grouping sounds that begin at the same time?

a. Grouping by onset

b. Grouping by timbre

c. Grouping by continuity

d. Grouping by decay

e. Restoration effects

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.2 Describe the ways in which the auditory system performs auditory stream segregation.

Bloom’s Level: 1. Remembering

39. _______ effects have been demonstrated in the laboratory with a wide variety of target sounds and interrupting sounds. The simplest version of such an experiment is to delete portions of a pure tone and replace them with noise.

a. Alternating

b. Decay

c. Continuity

d. Restoration

e. Auditory segregation

Textbook Reference: 10.4 Continuity and Restoration Effects

Learning Objective: 10.4.1 Describe how the auditory system uses a form of good continuation to perceive sounds.

Bloom’s Level: 3. Applying

40. _______ is a process by which missing or degraded acoustic signals are perceptually replaced.

a. Good continuation

b. Appropriate grouping rule

c. Perceptual filling

d. Perceptual restoration

e. Auditory stream segregation

Textbook Reference: 10.4 Continuity and Restoration Effects

Learning Objective: 10.4.2 Describe how the auditory system can restore missing parts of complex sounds.

Bloom’s Level: 1. Remembering

41. _______ describes the very rapid motor response to a sudden sound.

a. Knee-jerk reaction

b. Acoustic surprise reaction

c. Acoustic startle reflex

d. Auditory surprise effect

e. Auditory defense reaction

Textbook Reference: 10.5 Auditory Attention

Learning Objective: 10.5.1 Describe the acoustic startle reflex.

Bloom’s Level: 1. Remembering

42. Suppose you watch a scary movie in a theater and a loud noise causes you to jump in your seat. You have just experienced

a. a knee-jerk reaction.

b. an acoustic surprise reaction.

c. the auditory surprise effect.

d. an auditory defense reaction.

e. an acoustic startle reflex.

Textbook Reference: 10.5 Auditory Attention

Learning Objective: 10.5.1 Describe the acoustic startle reflex.

Bloom’s Level: 3. Applying

43. How many auditory streams can we humans accurately monitor at once?

a. One

b. Two

c. Three

d. Four

e. Five

Textbook Reference: 10.5 Auditory Attention

Learning Objective: 10.5.2 Explain the concept of inattentional deafness.

Bloom’s Level: 2. Understanding

Short Answer

44. What is the directional transfer function?

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.2 Explain how the auditory system uses pinnae and head cues to localize sounds.

Bloom’s Level: 2. Understanding

45. What is timbre?

Textbook Reference: 10.2 Complex Sounds

Learning Objective: 10.2.3 Define timbre.

Bloom’s Level: 2. Understanding

46. What is a restoration effect in auditory perception?

Textbook Reference: 10.4 Continuity and Restoration Effects

Learning Objective: 10.4.2 Describe how the auditory system can restore missing parts of complex sounds.

Bloom’s Level: 2. Understanding

47. What is the acoustic startle reflex?

Textbook Reference: 10.5 Auditory Attention

Learning Objective: 10.5.1 Describe the acoustic startle reflex.

Bloom’s Level: 2. Understanding

Essay

48. Describe the two major cues that our brain uses to localize sound waves.

Textbook Reference: 10.1 Sound Localization

Learning Objective: 10.1.1 Explain how the auditory system uses both interaural time differences and interaural level differences to localize sounds.

Bloom’s Level: 3. Applying

49. What is auditory stream segregation and what cues does the brain use to achieve it?

Textbook Reference: 10.3 Auditory Scene Analysis

Learning Objective: 10.3.2 Describe the ways in which the auditory system performs auditory stream segregation.

Bloom’s Level: 4. Analyzing

Document Information

Document Type:
DOCX
Chapter Number:
10
Created Date:
Aug 21, 2025
Chapter Name:
Chapter 10 Hearing in the Environment
Author:
Jeremy Wolfe

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