Deck 2: Sound, Acoustics, and Psychoacoustics

Question 1

The displacement of a vibrating object at any given instant of time is called _________.

Answer 1

Instantaneous displacement

Question 2

________ and ________ are two properties that are essential for vibration.

Answer 2

Inertia and elasticity

Question 3

The frequency content of a sound is represented in its ________.

Answer 3

Spectrum

Question 4

The complete formula to calculate dB SPL is _______________.

Question 5

The repeated back and forth movement of a vibrating object is called _______ motion.

Question 6

Sound is produced by the _________of objects.

Question 7

The complete formula to calculate dB IL is _______________.

Question 8

The typical medium for sound that audiologists deal with is ______.

Question 9

The maximum displacement of a wave is called ____________________

Question 10

The units of pitch and loudness are _______ and ________,respectively.

Question 11

Sine waves are also called ____________.

Question 12

The duration of sound consists of ______,______,______,______,and ______.

Question 13

The amount of force exerted on a specific area is called _____________.

Question 14

A sound with a single frequency of vibration is called a __________.

Question 15

The minimum amount of force that can be detected by a healthy human ear is _________ dynes/cm² or __________ µPa.

Question 16

The subjective attribute of intensity is called _________.

Question 17

The subjective perception of the frequency of sound is called its _________.

Question 18

A measure of the discrimination between two sounds is the __________.

Question 19

The time taken to complete one full cycle of movement is called __________.

Question 20

RMS stands for _______________________.

Question 21

The three factors that influence the speed of sound are _________,_________,and _________.

Question 22

Minimum auditory field MAF)and minimum auditory pressure MAP)are measured using ______ and ________,respectively.

Question 23

The detection of a sound is influenced by its duration.This is referred to as ____________.

Question 24

Constructive and destructive interference can change the intensity of sound.

Question 25

The faintest intensity level that can be detected is termed ___________________.

Question 26

Which of the following statements is true?

A)Sound can travel in any medium as long as the medium contains particles.
B)Sound can travel only in air.
C)Sound cannot travel in water.
D)Sound can travel in a vacuum a space where there are no particles.)

Question 27

The wavelength of a sound wave is defined as the distance between

A)Two successive condensations only
B)Two successive rarefactions only
C)Two successive rarefactions or condensations
D)One rarefaction and the next condensation

Question 28

Which of the following property-unit pair is appropriately matched?

A)Wavelength- Hertz
B)Frequency - Second
C)Speed of sound - Meters/second
D)Time period - cps

Question 29

The speed of sound in air is ________ m/s.

Question 30

The tendency of a body to maintain a state of rest or uniform motion unless acted upon by an external force is called

A)Vibration
B)Elasticity
C)Inertia
D)Damping

Question 31

Loudness and intensity can be used interchangeably with each other.

Question 32

The units dB SPL,dB SL,and dB HL can all be interchangeably used.

Question 33

The decibel called be described as a relative,logarithmic unit involving the ratio of a given pressure or power to a reference pressure or power.

Question 34

Sounds with very short durations are termed _______.

Question 35

Sound intensity is indirectly proportional to the distance between the receiver and the source of sound.

Question 36

The abbreviation RETSPL stands for ________________________.

Question 37

RETSPLS are the same regardless of the transducer used to measure them.

Question 38

The gradual decrease in the amplitude of vibration over time is called

A)Inertia
B)Resistance
C)Damping
D)Resistance

Question 39

The human voice can be characterized in terms of its _______________ and higher frequencies called _________.

Question 40

A sound with more than one frequency in it is called ___________.

Question 41

Name the three dimensions shown in a spectrogram.

Question 42

What is the relation between time period and frequency?

Question 43

What is the rationale behind the dB as a unit of sound intensity?

Question 44

Jane's threshold for a 2000 Hz pure tone is 40 dB SPL.What is the sensation level for a 2000 Hz presented to Jane at 50 dB SPL?

A)50 dB SPL
B)40 dB IL
C)90 dB HL
D)10 dB SL Short Answer

Question 45

Define dB SL.

Question 46

List three properties of sound that are manipulated by audiologists.

Question 47

Define dB HL

Question 48

Psychoacoustics is the branch of science that deals with the

A)Relation between the anatomy and the physiology of the auditory system
B)Relation between the anatomy of the auditory system and the physical aspects of sound
C)Relation between the physical aspects of sound and the physiology of the auditory system
D)Relation between the physical aspects of sound and the perception of sound

Question 49

An area with a high concentration of air particles is called

A)Condensation
B)Rarefaction
C)Vacuum
D)Anechoic chamber

Question 50

Name three noises used by audiologists in their daily practice.

Question 51

How are frequency and wavelength related?

Question 52

List three different sounds that are used by audiologist in their daily practice.

Question 53

What is the wavelength of a sound with a frequency of 10 Hz?

A)345 m
B)3.45 m
C)34.5 m
D)10 m

Question 54

Which of the following is related to the amplitude of vibration

A)Intensity
B)Wavelength
C)Frequency
D)Phase