Midterm

Question 0

what type of uniit is used to meeasuure frrequeency

Answer 0

Hz

Question 1

what does a waveform graphic display

Answer 1

pressuure over time with alternating compressions and rarefactions

Question 2

uniit tto measuure perriod

Answer 2

secconds (anytthing tthat represents time)

Question 3

whhat typee off relationship do wavellenggth and ffrequuencyy have

Answer 3

inverse relaatioonshipp

Question 4

frequency period and waveelenngth are alll related TRUE OOR FALSE

Answer 4

TRUE

Question 5

naame tthe ffive typees of incident wavee

Answer 5

transmiissioon
abssorption
defractiion
reflectiion
refraction

Question 6

2 typess of interfereence

Answer 6

connstrructtive aand destrucctive

cconsttructive (in pphasse)) destrucctive (out of phase))

Question 7

effect of interference depends on the degree of what

Answer 7

whether a wave is more in phase or out of phase

Question 8

what resuls when two waveeforms are not coompletely in phhase or out of phase (3)

Answer 8

mixxed
compllex
interfferencce

Question 9

a puree tonee is an examplle of what type of motiooooo

Answer 9

siimplee harmonicc mmotiooooooo

Question 10

a coomplex wavve reqquires what two chharaccteristtics

Answer 10

fundamenntal freqquenccy

hharmonic frequeenciees

Question 11

ddescribbe thhree eexaamplles of a complexx sinnuusoid

Answer 11

1– 2 waves both different frequency but same amp
2– 2 waves one with lower amp one with high freq.
3– 3 waves wwiith diffferrent amp and freqq

Question 12

wwhat does a line specctruum measure

Answer 12

Amplitude over frequency

Question 13

What does a complex periodic wave measure

Answer 13

Amplitude over time

Question 14

What does a a caustic waveform measure

Answer 14

Amp over time

Question 15

What does a power spectrum measure

Answer 15

Amp over freq

Question 16

What are two types of aperiodic sounds

Answer 16

Continuous and transient

Question 17

What are the two physical properties of a sound wave

Answer 17

Frequency and intensity

Question 18

What are the two psychological properties of a sound wave

Answer 18

Pitch and loudness

Question 19

What unit measure physical properties of intensity

Answer 19

dB

Question 20

What is the unit to measure psychological property of intensity

Answer 20

Phon

Sone

Question 21

What is the psychological unit to measure frequency

Answer 21

Mel

Semitones

Question 22

Is frequency objective or subjective

Answer 22

Objective

Question 23

What is frequencies perceptual counter part

Answer 23

Itch

Question 24

What is pitches physical counterpart

Answer 24

Frequency

Question 25

What all is pitch measured in (perceptual)

Answer 25

Bark, Mel, ERB (equivalent rectangular bandwidth rate)

Question 26

Freq and pitch are related in a linear manner

TRUE or FALSE

Answer 26

FALSE

Question 27

Frequency depends on what 7 characteristics

Answer 27

Size
Length
Thickness
Density
Stiffness
Tension
Mass

Question 28

Human perception of frequency is subsonic or supersonic?

Answer 28

Subsonic (20-20,000Hz), animals are supersonic

Question 29

What determines a humans perception of frequency

Answer 29

The place of maximum excitation on the basilar membrane

Question 30

What is an Example of a sound that can “trick” our ears

Answer 30

Shepherds scale

Question 31

Intensity is a measurement of…

Answer 31

Energy
Work
Power

Question 32

What unit do we use to measure energy

Answer 32

Ergs (cgs), joules (mks),

Question 33

Unit to measure power

Answer 33

Watts

Question 34

Unit to measure intensity

Answer 34

Watts/cm2

Question 35

According to intensity distance amp relationship…

Answer 35

distance increased, intensity decreases by factor equal to square of distance

Question 36

If amplitude doubled

Answer 36

Intensity quadrupled

Question 37

What does decimal scale measure

Answer 37

Standard reference sound
Threshold of hearing
Threshold of pain