Quiz 1

Question 1

Psychoacoustic’s is a branch of __________

Answer 1

Psychophysics

Question 2

Psycho means _______

Answer 2

sensation

Question 3

Differential sensitivity is how much of a _______ in a stimulus does it take for someone to notice that ________

Answer 3

difference x2 (frequency and intensity)

Question 4

Loudness changes with _______ stimulus

Answer 4

physical

Question 5

The foundation of clinical audiology is ______ it is more dependent on frequency

Answer 5

pitch

Question 6

There is ____ _____ “absolute threshold

Answer 6

NO TRUE

Question 7

We use the term “absolute threshold” to refer to the ______ _____ level of a given stimulus that elicits a response from an individual

Answer 7

Minimum intensity

Question 8

The minimum intensity level is also known as ______

Answer 8

detection

Question 9

While it is NOT a clinical procedure, it is also possible to measure a ________ threshold or an individuals ability to perceive a just ________ difference in one sound from another

Answer 9

differential
noticeable

Question 10

just noticeable difference is also known as _______

Answer 10

discrimination

Question 11

We are also able to determine an individuals ability to perceive _______ differences between sounds (e.g. pitch or loudness)

Answer 11

qualitative

Question 12

the ability to perceive qualitative differences is also known as ____

Answer 12

scaling

Ex. low to high pitch

Question 13

________ is known as one sounf influencing the perception of another sound and the amount of threshold shift produced in the first sound by the second sound

Answer 13

masking

The psychoacoustic research findings in masking the basis for clinical masking types and protocols

Question 14

______ is the ability to recognize changes in intensity over time

Answer 14

temporal process - important for hearers

Question 15

In the temporal domain is the ear’s ability to _____ acoustic power over time, which is known as ________ integration

Answer 15

sum
temporal

Question 16

Temporal integration has implications for clinical _______ measurements

Answer 16

threshold

Question 17

Hearing with ____ ears have many advantages over hearing with ____ ear

Answer 17

two
one

Question 18

what are the advantages to hearing with both ears

Answer 18

slightly differential sensitivity

greatly improved localization

greatly improved detection and recognition in noise

Question 19

Individuals with ________ HL typically have impaired psychoacoustic abilities

Answer 19

sensorineural

Question 20

_______ noise has a much greater affect on someone who has _______ hearing loss

Answer 20

background
sensorineural

Question 21

Mass

Answer 21

kilograms or grams

Question 22

length is

Answer 22

spatial separation or displacement (magnitude and direction)

meters or cm

Question 23

time is

Answer 23

seconds

miliseconds (ms)

Question 24

area is

Answer 24

m2 or cm2

Question 25

volume is

Answer 25

m3 or cm3

Question 26

velocity is

Answer 26

m/s or cm/s

Question 27

Acceleration is

Answer 27

time rate change in velocity m/s2 or cm/s2

Question 28

Force is defined by the first two of _______ laws

Answer 28

newton's

Question 29

Newtons law 1

Answer 29

An object at rest tends to remain at rest an object in motion tends to maintain its magnitude and direction of velocity unless acted on by an outside force

Question 30

Newtons 2nd law

Answer 30

The new force acting on an object in motion equals the product of its mass and the acceleration

Question 31

Force is required to change the ______ of an object

Answer 31

motion

Question 32

Force is the product of _______ and ______

Answer 32

mass and acceleration F=ma

Question 33

Force can also _____ an object

Answer 33

deform

Question 34

The ability of the object to return to its original shape after a force has been applied is called _____

Answer 34

elasticity

Question 35

The force of 1 N acting THROUGH a distance of 1 m is called a ______

Answer 35

joule

Question 36

The rate at which work is done is power and the unit of measure is ____

Answer 36

watt (1 joule/sec)

Question 37

When considering acoustic intensity, we look at the ______ per second per square meter

Answer 37

energy

Question 38

The unit of measure for intensity is the _______

Answer 38

watt/m2

Question 39

The reference acoustic intensity is _____

Answer 39

10-12 watt/m2

Question 40

What is the force per unit area

Answer 40

p = F/A

Question 41

The reference sound pressure is ?

Answer 41

2 x 10-5 N/m2 or 20 uPa

Question 42

The pattern of movement over time is refered to as a _______ _______ motion or _________ motion

Answer 42

simple harmonic sinusoidal *because the time course of displacement can be described by a sine function*

Question 43

What are the two important characteristics of vibration?

Answer 43

Amplitude - magnitude, and direction of displacement Frequency - rate of vibration, measured as the number of cycles completed per second

Question 44

properties of the sound source determine its natural ________ of ______

Answer 44

frequency vibration

Question 45

Frequency depends on other characteristics such as _____, _____, _____ and ______

Answer 45

length, thickness, tension, and density

Question 46

once a force is imparted to a body and vibration begins, the body will ______ freely for a certain time; the only forces involved are ______ and ______

Answer 46

vibrate inertia and elasticity

Question 47

Given a natural frequency of 500 Hz increasing stiffness 4x would increase frequency to _____ Hz and increasing mass 4x would decrease frequency to ____ Hz

Answer 47

1000 250

Question 48

free vibration will not continue indefinitely due to _____ resistance

Answer 48

frictional

Question 49

The opposition to motion from resistance is independent of _____; the opposition to motion that operates in frequency-selective manner is _____

Answer 49

frequency reactance

Question 50

Mass reactance is directly proportional to _______

Answer 50

frequency *main contributor at high frequencies - the system is mass dominant

Question 51

Compliance (stiffness) reactance is ________ proportional to frequency

Answer 51

inversely