Question 1

Determine which of the following would be considered examples of sensory-substitution devices: (1) a thermometer, (2) a toaster, (3) an oscilloscope, (4) the beep of a car going backward, (5) an escalator, (6) a musical score. Which senses are being substituted by sensory-substitution devices?

Accepted Answer

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Question 2

When a sequence of pure-tone glides separated by brief gaps of silence is presented, a listener can:

Accepted Answer

Listeners often perceive the gaps as continuing or gliding behind the noise due to auditory continuity or the auditory system's tendency to fill in missing information.

Question 3

A football helmet completely covers and cushions a player's ears (pinna), except for a tiny opening that allows sound to enter. How is a player's ability to localize sounds affected by wearing a helmet?

Accepted Answer

The answer of A football helmet completely covers and cushions...

Question 4

Five pure tones are presented simultaneously such that three of them are harmonics of the same fundamental tone and one is a nonharmonic tone. How many auditory streams would the listener perceive?

Accepted Answer

The listener would likely perceive two auditory streams: one consisting of the harmonics of the same fundamental tone, which would blend together due to their harmonic relationship, and another stream for the nonharmonic tone, which does not share this relationship and thus stands out as separate.

Question 5

Explain this analogy: auditory scene analysis is like trying to determine the activity on a lake by looking at the waves striking a one-foot-wide section of the shore.

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Question 6

Sometimes, when listening to music over a pair of headphones, an individual visualizes a live performance of a band. The person also visualizes the location of each musical instrument and the singer on the stage. (A) Explain how this effect is achieved. (B) Explain whether the music can be produced such that it is perceived as coming from behind the listener.

Accepted Answer

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Question 7

What are coincidence detectors? Where are they located, and what function do they perform?

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Question 8

Discuss three cues that help in determining the distance between the ear and a source of sound.

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Question 9

What type of mapping is ascribed to structures in the auditory core region? Briefly define this type of mapping. Does this type of arrangement resemble any other structure's arrangement?

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Question 10

A listener will find it difficult to judge the frequency of two sequential tones if:

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Question 11

The mixture of frequencies arriving at the ear within a given interval of time can be grouped according to:

Accepted Answer

The mixture of frequencies arriving at the ear can be grouped according to both harmonic coherence and synchrony. Harmonic coherence refers to how frequencies relate to each other in a harmonic series, which helps in identifying the timbre and pitch of sounds. Synchrony refers to the timing of these frequencies, which aids in sound localization and the perception of rhythm.

Question 12

How does diffraction of sound waves explain both the effectiveness of the interaural time difference and the ineffectiveness of the interaural-level difference in discerning the azimuth of a low-frequency sound?

Accepted Answer

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Question 13

According to Albert S. Bregman's description of auditory scene analysis:

Accepted Answer

Albert S. Bregman's theory of auditory scene analysis suggests that unrelated auditory streams rarely start or stop at exactly the same time, as this is one of the cues the auditory system uses to segregate different sound sources.

Question 14

The FIRST step in auditory scene analysis is to organize the input into a set of distinct:

Accepted Answer

The first step in auditory scene analysis is to organize the input into a set of distinct auditory streams, which allows the auditory system to separate sounds from different sources.

Question 15

What auditory information would a visually impaired bicyclist use to safely negotiate the location of other vehicles and stationary objects?

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Quiz 11: The Auditory Brain and Perceiving Auditory Scenes