Aud Science Review

Question 1

azmith

Answer 1

Horizontal : 0 degrees in front of the head, 90 degrees is by the right ear, 180 degrees is behind the head, 270 degrees is by the left ear
Vertical : 0 degrees in front, 90 degrees on top, 180 behind

Question 2

what are the big 3?

Answer 2

amplitude, frequency, and time

Question 3

what are the perceptual qualities of the big 3

Answer 3

amplitude - loudness
frequency - pitch
time - duration

Question 4

what bandwidth is a good generator?

Answer 4

narrow band

Question 5

what bandwidth is good transducer ?

Answer 5

broad band

Question 6

what is threshold microstructure?

Answer 6

the little changes on an audio gram between test points, we assume it falls where the line is

Question 7

3 factors of masking

Answer 7

intensity of masker, frequency of masker, and temporal characteristics

Question 8

what makes psychoacoustic procedures adaptive?

Answer 8

psychoacoustic procedures are adaptive, because you adjust how you test based off of the patient’s response

Question 9

with regards to signal detection theory, someone with liberal criterion will present with thresholds that are relatively better or poorer?

Answer 9

Relatively better threshold

Question 10

for listeners with typical hearing, Dublin of loudness is approximately equivalent, to an increase of how many dB

Answer 10

10

Question 11

jnd intensity

Answer 11

1 dB or better

Question 12

jnd frequency

Answer 12

approximately 0.5% of the frequency

Question 13

jnd for duration

Answer 13

as short as 2-3 msec

Question 14

why would the jnd for frequency be different at 2000 Hz than it is it 1000 Hz

Question 15

List four factors that can affect threshold estimation

Answer 15

attention level, understanding of the directions, motivation, level, and internal criterion

Question 16

True or false loudest perception is dependent upon the frequency of the stimulus

Answer 16

true

Question 17

what are the five parameters for measuring threshold behaviorally?

Answer 17

Method of presentation, starting level, stepsize, stopping role, and how the threshold is defined

Question 18

What is differential sensitivity?

Answer 18

test assesses the smallest detectable difference between two stimuli that vary in sound pressure

Question 19

what is absolute sensitivity?

Answer 19

Test assesses the least amount of sound pressure level at which a subject response 50% of the time

Question 20

The cochlea is nonlinear, meaning that the amount of game differs based on input level. is more gain applied at low-level inputs, mid-level, and puts or high-level inputs?

Answer 20

 Low input level

Question 21

dynamic range refers to

Answer 21

The range between the least audible sound in the highest tolerable sound

Question 22

What is the frequency range with the auditory system is the most sensitive?

Answer 22

1000 to 5000 Hz

Question 23

if you increase the stiffness …

Answer 23

The rate of vibration will increase

Question 24

if you increase the mass…

Answer 24

The rate of a ration will decrease

Question 25

basic quantities

Answer 25

Time, length, and mass

Question 26

derived quantities

Answer 26

require more than one factor. examples are velocity, displacement, and power

Question 27

what’s the difference between scalar and vector quanties

Answer 27

they both have magnitude but only vector has direction

Question 28

sound pressure

Answer 28

Force per unit area measured at one particular location away from the source

Question 29

sound power

Answer 29

work per time unit, property of the sound source

Question 30

sound intensity

Answer 30

Power per unit area, described as the flow of sound

Question 31

RMS

Answer 31

average amplitude

Question 32

doubling of intensity

Answer 32

+3 db

Question 33

doubling of sound pressure

Answer 33

+ 6 dB

Question 34

doubling of loudness

Answer 34

+10 dB