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Praxis > acoustics > Flashcards

acoustics Flashcards

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1
Q

vibratory motion is possible because of

A

elasticity

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2
Q

single frequency tone

A

pure tone

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3
Q

sine wave of simple harmonic motion

A

single frequency tone repeating

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4
Q

velocity

A

amount of molecular displacement per unit of time

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5
Q

2 characteristics of vibratory motion

A

frequency and amplitude

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6
Q

medium transmitting sound doesnt affect the _____ but does affect the ___

A

frequency, speed

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7
Q

more dense the medium

A

slower the speed of sound

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8
Q

more elastic the medium

A

faster the speed of sound

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9
Q

normal pitch response

A

20 Hz to 20,000 Hz

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10
Q

more sensitive to what frequency

A

lower, below 1,000 Hz

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11
Q

amplitude

A

sound pressure = amount force/unit area

the greater molecular displacement, higher amplitude/intensity

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12
Q

minimum intensity to stimulate auditory system

A

hearing level

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13
Q

normal speech intensity

A

50- 70 dB

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14
Q

intensity that induces pain

A

100dB

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15
Q

spectrogram measures

A

fundamental frequency

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16
Q

fundamental frequency

A

lowest component frequency of periodic wave, tone produced by vibration of the vocal folds before air reaches cavities

17
Q

high vowels fundamental frequency

A

higher fundamental frequency

18
Q

low vowels fundamental frequency

A

lower fundamental frequency

19
Q

F1 varies with tongue _____

F2 varies with tongue _____

A

f1: tongue height
f2: tongue advancement

20
Q

voice onset time

A

between release of stop consonant and beginning of vowel

21
Q

voice termination time

A

time required to cease vocal activity

Praxis (13 decks)

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