lecture 19 (test 2) Flashcards

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1
Q

we experience intensity as

A

loudness

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2
Q

we experience frequency as

A

pitch

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3
Q

psychoacoustics is the

A

study of human hearing

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4
Q

Minimum Audible Field (MAF) Threshold

A
  • present sounds sound to listeners from a speaker
  • more natural
  • sensitive to head movement
  • very sensitive to localization and exam room
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5
Q

Minimum Audible Pressure (MAP) Threshold

A
  • present sounds through headphones
  • precisely controlled
  • not sensitive to head movement
  • not very natural
  • eliminate some of the ears natural funneling and filtering abilities
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6
Q

lowest detection thresholds are ______ to ________-

A

2 000- 6 000 HZ

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7
Q

Terminal threshold

A

maximal sound pressures that humans can tolerate and then experience pain

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8
Q

The area between the minimal audibility curve and the terminal threshold is the _____

A

dynamic range

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9
Q

above threshold

A

suprathreshold

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10
Q

can feel low-frequency sounds because

A

the change in air pressure for an extended period of time (high-frequency changes are too fast to detect)

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11
Q

which; MAF of MAP produces higher thresholds

A

MAP

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12
Q

monaural stimulation thresholds are ______

A

higher by 6db

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13
Q

longer sounds are heard as being …

A

louder

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14
Q

masking

A

using a second sound to make the detection of another sound more difficult

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15
Q

what allows us to hear 2 000 Hz tone

A

masking

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16
Q

equal loudness curves start at ____

A

1000 Hz

17
Q

how does the auditory system like to discriminate sound intensity

A

comparing activity across many auditory fibers

18
Q

horizontal plane

A

azimuth

19
Q

where is 0 degrees azimuth

A

directly in front

20
Q

azimuth degrees moves …

A

clockwise

21
Q

vertical plane

A

elevation

22
Q

diotic sounds

A

arrives at both ears at the same time

23
Q

dichotic sounds

A

arrive at each ear at a different time

24
Q

what do we do to assist localization

A

turn head

25
Q

Interneural Time Difference (ITD)

A
  • relevant for dichotic sounds only
  • less susceptible to frequency
    have listeners sit in a room with microphones in ears, when the sound reaches the first mic starts the timer, when reaches the second mic, stops the timer