CSD 303 Part One

studied byStudied by 129 people
5.0(2)
get a hint
hint

Amplitude

1 / 71

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

72 Terms

1

Amplitude

the maximum displacement of the particles of a medium (from equilibrium)- indicates the energy/intensity of a sound

New cards
2

Aperiodicity

a sound disturbance in which the wave shape does not repeat itself as a function of time (ex. static on the radio, a sudden explosion)

New cards
3

Audiometric Zero (0 dB HL)

average human threshold at each individual frequency tested

New cards
4

Complex Sounds

energy distributed at more than one frequency

New cards
5

Compression (Condensation)

particles in a medium being pushed closer towards each other

New cards
6

Cycling

time concept referring to movement of a vibrating object from rest position to maximum displacement in one direction

New cards
7

Damping

rate at which the magnitude of vibration and the loudness of the resultant sound decreases

New cards
8

Decibel (dB)

the most common unit used to measure loudness/sound intensity

New cards
9

Elasticity

the ability of an object or material to resume its normal shape after being stretched or compressed; stretchiness/springiness

New cards
10

Fourier Analysis

takes information from the time domain (waveform) and transforms it into the frequency domain (spectrum)

New cards
11

Frequency

the number of complete cycles that occur during a certain time period, usually 1 second

New cards
12

Fundamental Frequency

whole number multiple of of the component with the lowest frequency

New cards
13

Harmonics

whole number multiples of the fundamental frequency

New cards
14

Inertia

The tendency of an object to resist a change in motion

New cards
15

Mass

any form of matter

New cards
16

Noise

sounds that lack cyclical or repetitive vibrations, an unwanted sound

New cards
17

Peak Amplitude

linear measurement of a wave from the baseline to the point of maximum displacement

New cards
18

Peak-to-peak Amplitude

linear measurement of the distance from point of positive maximum displacement to negative maximum displacement

New cards
19

Period

the time (expressed in milliseconds) that it takes for a vibrating object to complete one cycle of vibration

New cards
20

Periodicity

a periodic sound disturbance in which the wave shape repeats itself as a function of time (ex. simple harmonic motion, tuning fork, pendulum)

New cards
21

Phase

the point in the cycle at which the vibrating object is located at a given moment in time

New cards
22

Pitch

perceptual correlate of frequency

New cards
23

Pure Tone

a sound that has almost all its energy located in a single frequency

New cards
24

Rarefraction

when particles are spread apart more than they normally would be

New cards
25

Reflection

sound that is reflected from any surface

New cards
26

Reverberation

multiple or continuous reflections of sound that prolong the existence of the sound within a confined space

New cards
27

Sinusoidal Motion (Simple Harmonic Motion)

a disturbance in a medium that occurs when devices such as tuning forks are activated and undergo simple "to and fro" motion.

New cards
28

Sound

a condition of disturbance of particles in a medium

New cards
29

Sound Pressure Level (SPL)

scale that measures amplitude in dynes/cm^2 or pascals- measurement is expressed in decibels

New cards
30

Spectrum

when amplitude is plotted as a function of frequency

New cards
31

Spring Mass Model

visual model that shows the properties of molecular elasticity

New cards
32

Transduction

change in the form of energy

New cards
33

Wave Form

graph that displays variations in pressure in relation to amplitude and time

New cards
34

Wavelength

linear measurement that refers to the distnace that a sound wave disturbance can travel during one complete cycle of vibration

New cards
35

Describe the motion of a sine wave

New cards
36

Describe spatial and temporal concepts associated with sine waves

New cards
37

Describe the relationship between frequency/period

period and frequency are inversely related to each other - period can be measured directly so we must know that in order to find frequency

New cards
38

Describe the difference between simple and complex sounds and provide examples

simple: all energy is located in a single frequency (ex. a tuning fork) complex: has energy distributed at more than one frequency (ex. speech sounds)

New cards
39

Differentiate periodicity and aperiodicity in sounds

periodicity: the wave shape repeats itself as a function of time aperiodicity: the wave shape does not repeat itself as a function of time

New cards
40

Define fundamental frequency and harmonics of complex sounds

fundamental frequency: whole number multiple of the component with the lowest frequency (the first bar, the lowest) harmonics: whole number multiples of fundamental frequency (all the bars above the lowest)

New cards
41

Describe the importance of the decibel, how it is computed, and how it is used in describing the energy of sound

the decibel helps to compare the intensities of different sounds; computed by taking the base-10 logarithm of the ratio

New cards
42

Frequency and Pitch are directly correlated

the higher the frequency, the higher the pitch

New cards
43

Audiogram

graph or table showing thresholds in hearing level at different frequencies

New cards
44

Audiometric Zero

level of pure tone signal that is just detectable by listeners with normal hearing

New cards
45

Azimuth

angle of incidence of a sound wave as it reaches the head

New cards
46

Bone Conduction

transmission of sound waves to the inner ear through vibration of the bones of the skull

New cards
47

Head Shadow Effect

reduction of sound level at the ear farther away from the sound source, caused by the presence of the head between the sound source and the ear. it is a factor in sound localization

New cards
48

Incident Sound

Sound coming directly from the source

New cards
49

Interaural Intensity Differences

localization cue described as the difference in intensity of a sound at the two ears; usually caused by the head shadow effect- also known as interaural level difference

New cards
50

Interaural Time Differences

localization cue described as the difference between time of arrival and of sound at one ear compared to the opposite ear- also known as interaural phase difference

New cards
51

Minimum Audible Field (MAF)

lowest level of sound heard when meausring auditory sensitivty through speakers

New cards
52

Minimum Audible Pressure (MAP)

lowest level of sound heard when measuring auditory sensitivity through earphones

New cards
53

Reflected Sound

sound that is reflected from any surface

New cards
54

Temporal Integration (Summation)

a change in threshold as the duration of a stimulus changes

New cards
55

Two-Alternative Force-Choice Procedure

psychological test measuring the limits of a client's threshold by presenting sound levels in a random order and asking the client to indicate whether or not the auditory stimulus was present in a given time period

New cards
56

Identify the primary cues used in auditory localization

New cards
57

Describe the differences between hearing by air conduction, and hearing by bone conduction

Hearing by air conduction is when sound travels through the outer, middle, and inner ear. Hearing by bone conduction is sound that travels through the head

New cards
58

Binaural

refers to both ears- opposite of monaural

New cards
59

Interaural Time Difference

the law that describes the loss of sound presure level as distance from theh sound source inscreases

New cards
60

Inverse Square Law

law that describes the loss of sound pressure level as distnace from the soudn source increases

New cards
61

Lateralization

effect of detecting a sound with a greater intensity in one ear relative to the other ear- if the sound intensity changes in one ear, the listener will perceive the sound source as moving

New cards
62

Localization

ability to identify the direction of a sound source

New cards
63

Simple Harmonic Motion

distubrance in a medium in which particles are displaced perpendicular to the direction of the disturbance

New cards
64

Sine Wave

temporal picture of cyclical variation - also called sine wave

New cards
65

Intensity

the power of a sound- relates to loudness

New cards
66

Constructive and Deconstructive Interference Sound

two traveling waves which exist in the same medium will interfere with each other- if their amplitudes add they are constructive, if their amplitudes are out of phase and subtract, they are deconstructive

New cards
67

Head Shadow

region of reduced amplitude of a sound because it is obstructed by the head.

New cards
68

Direct Sound

sound that travels directly from source to the receiver

New cards
69

dB IL dB SPL dB HL dB SL

New cards
70

dB IL

decibel intensity level scale

<p>decibel intensity level scale</p>
New cards
71

dB SPL

decibel sound pressure level

<p>decibel sound pressure level</p>
New cards
72

Describe the relationship between frequency/wavelength

wavelengths are determined when dividing speed (s) by frequency (f)

New cards

Explore top notes

note Note
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 43 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 58 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 4 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 59 people
Updated ... ago
5.0 Stars(5)
note Note
studied byStudied by 10850 people
Updated ... ago
4.9 Stars(51)
note Note
studied byStudied by 4 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 17 people
Updated ... ago
5.0 Stars(1)

Explore top flashcards

flashcards Flashcard39 terms
studied byStudied by 8 people
Updated ... ago
5.0 Stars(2)
flashcards Flashcard52 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard42 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard33 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard30 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard42 terms
studied byStudied by 29 people
Updated ... ago
5.0 Stars(2)
flashcards Flashcard128 terms
studied byStudied by 53 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard50 terms
studied byStudied by 51 people
Updated ... ago
5.0 Stars(2)