Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Sensation and Perception > Chapter 11 > Flashcards

Chapter 11 Flashcards

1
Q

physical definition of sounds

A

pressure changes in air or other medium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

perceptual definition of sounds

A

sound is experience we have when we hear something

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

condensation

A

diaphragm of the speaker moves, pushing air molecules together - increase in pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

rarefaction

A

Diaphragm also moves in, pulling the air molecules apart - decrease in pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

amplitude

A

difference in pressure between high and low peaks of wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

perception of amplitude

A

loudness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Decibel

A

Measure of loudness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Number of decibels

A

20 Logarithm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Frequency

A

number of cycles within a given time period, measured in hertz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

perception of pitch

A

related to frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Tone height

A

increase in pitch when frequency is increased

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

periodic tones

A

pure and complex tones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

harmonics

A

periodic complex tones that consist of a number of pure tones, additional harmonics are multiples of the fundamental frequency.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

additive synthesis

A

process of adding harmonics to create complex sounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Frequency spectrum

A

display of harmonics of a complex sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Fundamental frequency

A

repetition rate - first harmonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Audibility Curve

A

shows threshold of hearing in relation to frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

20 - 20,000 Hz

A

human hearing range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

changes to curve

A

show humans are most sensitive to 2,000- 4,000 Hz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Auditory response area

A

between audibility curve and threshold of feeling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

1,000 Hz

A

equal loudness curve is standard, everyone can typically hear this

22
Q

Timbre

A

all other perceptual aspects of a sound besides loudness, pitch and duration

23
Q

attack of tones

A

build of sound at the beginning of a tone

24
Q

decay of tones

A

decrease in sound at end of tone

25
Q

outer ear

A

pinna and auditory canal- funnel and focus of sounds

26
Q

Pinna

A

helps with sound location

27
Q

Auditory canal

A

amplify sounds so when it hits the ear drum, sounds will still be perceived

28
Q

resonant frequency of canal

A

amplifies frequencies between 1,000 and 5,000 Hz

29
Q

middle ear

A

separates inner and outer ear, filled with

30
Q

ossicles

A

three tiny bones in middle ear, act to amplify the vibration for better transmission to the fluid

31
Q

Malleus

A

moves due to vibration of tympanic membrane

32
Q

Incus

A

Transmits vibration of malleus

33
Q

Stapes

A

transmit vibrations of incus to the inner ear via the oval window of the cochlea

34
Q

tympanic membrane

A

eardrum, moves the tiny bones when pressure hits

35
Q

outer and inner ear

A

filled with air

36
Q

main structure of nine ear

A

cochlea

37
Q

cochlea

A

fluid filled snail like structure (35mm long) set into vibration by steps

38
Q

scala vestibuli

A

lies superior to the cochlea, abuts the oval window

39
Q

scala tympani

A

divided from vestibule by cochlear partition

40
Q

choclear partition

A

extends from the base (stapes end) to the ape (far end)

41
Q

basilar membrane

A

vibrates in response to sound and supports the organ of Corti

42
Q

hair cells

A

inner and outer are the receptors for hearing

43
Q

tectorial membrane

A

extends over the hair cells

44
Q

transduction

A

Cilia bends in response to movement of organ of Corti and the tectorial membrane- stimuli to electricity, doesn’t start until hitting the oval window

45
Q

Bekeseys Place Theory of Hearing

A

perception of sounds depends on where each component frequency produces vibrations along the basilar membrane.

46
Q

tonotopic map

A

cochlea shows orderly map of frequencies along its length

47
Q

apex

A

responds best to low frequencies

48
Q

base

A

responds best to high frequencies

49
Q

Pure tones used

A

to determine the threshold for specific frequencies

50
Q

tuning curves

A

plotting thresholds for frequencies

Sensation and Perception (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions