midterm questions

Question 1

a sound wave is a ____ because the movement of air particles is in the same direction of the sound

Answer 1

longitudinal wave

Question 2

areas where air particles are spread apart are___ areas where air particles are closer together are___

Answer 2

apart=rarefaction together=compression

Question 3

which point corresponds to the airpressure pattern of compression in a regular simple sine wave?

Answer 3

where the line meets the wave.

Question 4

which point corresponds to the air pressure pattern of rarefraction in a regular simple sine wave?

Answer 4

the top of the sine wave and the bottom of the wave under the line.

Question 5

a ____ presents the sound as a unified entity

Answer 5

a waveform

Question 6

a______presents the individual components of the sound over time

Answer 6

a spectragram

Question 7

a sine wave that is more stretched out along the x axis has a ____than one with another.

Answer 7

lower frequency

Question 8

a sine wave with higher peaks has a ___ than another sound (a)

Answer 8

higher intensity

Question 9

frewuency (Hz) towards milliseconds veriable

Answer 9

x 100 so a sound that is 0.02 seconds long would be 200 Hz

Question 10

what is the frequency of a sound that is one octave higher than a 100-Hz sound?

Answer 10

200 Hz

Question 11

a complex sound wave that has a shorter vot (because stops) is more likely
/eke/ or /ege/

Answer 11

eke

Question 12

a complex sound wave that has a longre vot (because of stops to vot ratio) is more likely /eke/ or /ege/

Answer 12

/ege/

Question 13

/i/ is a __ ___ wave?

Answer 13

periodic, complex wave

Question 14

/s/ is a ____ ____ wave?

Answer 14

aperiodic continuous wave

Question 15

/z/ is a ____ ____ wave?

Answer 15

periodic, complex wave

Question 16

/t/ is a ___ ____wave?

Answer 16

aperiodic, transient

Question 17

in a wave form, the horizontal axis represents X, and the vertical axis reprents Y.

Answer 17

x=time, y= amplitude

Question 18

in a spectrum, the horizontal axis represents X., and the vertical axis represents Y.

Answer 18

frequency, amplitude.

Question 19

in a spectrogram, the horizontal axis represents X, and the vertical axis represents Y

Answer 19

time, frequency

Question 20

vowel quaderalteral, top left corner, top right corner, botom left corner, bottom right corner.

Answer 20

top left=i top right=u bottom left=ae bottom right= a

Question 21

we can hear better in a vacuum chanber because there is no background noise t/f

Answer 21

f

Question 22

sound in water feels different from sound in air because sound travels slower under water than in air t/f

Answer 22

false

Question 23

what kind of sound does [k] make? periodic/aperiod/complex/transient sound etc

Answer 23

transient sound, its a stop

Question 24

what kind of sound does [g] make? periodic/aperiodic/complex/transient sound etc?

Answer 24

transient sound, its a stop.

Question 25

what sound does [0th] make periodic/aperiodic/complex/transient sound etc?

Answer 25

a periodic sound, voiceless.

Question 26

what kind of sound does [v] make? periodic/simple/complex/aperiod/transient sound etc?

Answer 26

periodic complex sound, its a voiced fricative

Question 27

what kind of sound does [n] make? periodic/complex/aperiodic/transient sound etc?

Answer 27

n nasals make periodic, complex sounds

Question 28

what kind of sound does [u] make? periodic/complex/aperiodic/transient sound etc?

Answer 28

periodic, complex sound

Question 29

the source of all speech sounds is the vibration of the vocal folds tf/

Answer 29

FALSE NOT ALL

Question 30

teh source decides the harmonics, and thefilter decides the formants tf/

Answer 30

true

Question 31

when the slope of the spectrum is steeper, the output is softer tf

Answer 31

trues.

Question 32

f0 is the zeroth formant tf

Answer 32

false

Question 33

if the first harmonic is 100 Hz, the second harmonic is 200 Hz tf

Answer 33

t

Question 34

if the first formant is 440 Hz, the second formant is 880 Hz tf

Answer 34

false no relation

Question 35

f0 is the first harmonic tf

Answer 35

true

Question 36

the shorter the vocal tract, the higher the formant frequencies. tf

Answer 36

t

Question 37

harmonic frequencies are equally spaced tf

Answer 37

true

Question 38

formant frequencies are evenly spaced tf

Answer 38

false

Question 39

fundamental frequency means the first formant t/f

Answer 39

true

Question 40

lowering the tongue results in a decreased f1 tf

Answer 40

false

Question 41

fronting the tongue results in decreased f2 tf

Answer 41

false

Question 42

the dark horizontal bars on the spectrogram indicate the ____fof the sound

Answer 42

formants

Question 43

the thin white vertical bars on the spectrogram indicate that the sound is

Answer 43

voiced

Question 44

nasal stops are transient waves tf

Answer 44

false

Question 45

vowels before voiceless consonants are generally shorter than those before the voiced ocunter parts. t/f

Answer 45

true

Question 46

a negative vot means a voiceless stop tf

Answer 46

false

Question 47

obstruents include both oral stops and nasal stopstf

Answer 47

false

Question 48

sonorants include nasals, liquids, and glidestf

Answer 48

true

Question 49

approximants include nasals, liquids, and glides. tf

Answer 49

false

Question 50

human perception is better described by a linear or logarithmic scale?

Answer 50

logarithmic

Question 51

decibel is a ____ (type logarithmic or linear of scale)

Answer 51

logarithmic

Question 52

Hertz is a ___

Answer 52

linear/.

Question 53

octave is a (log or linear scale)

Answer 53

logarithmic

Question 54

a supersonic sound is a sound such that:

Answer 54

its frequency is above the normal range of human hear

Question 55

0dB means silence t/f

Answer 55

false

Question 56

0 Hz means silence tf

Answer 56

true

Question 57

t is possible to have a negative number on the dB scale tf

Answer 57

true, subson

Question 58

it is possible to have a negative number on the Hz sacle tf

Answer 58

false

Question 59

the intensity of a sound at 70 dB is 10 times greater than that of a sound at 60 dB. tf

Answer 59

true

Question 60

a sound at 70 db is percieved 10 times louder than a sound at 60 dB. tf

Answer 60

false. perceptionnnnnnnnnnnnnn=X=does not equal ten times louder.