Questions from Quiz 8 Flashcards
Which of the following is true for laminar and turbulent airflow in speech sounds?
a) Approximants typically have laminar flow, whereas fricatives often have turbulent flow.
b) Laminar flow is present in all types of speech sounds.
c) Laminar flow involves chaotic movement of air particles while turbulent flow is smooth and steady.
d) All sibilants have turbulent flow, while all non-sibilants exhibit both laminar and turbulent flow.
a) Approximants typically have laminar flow, whereas fricatives often have turbulent flow.
Which of the following statements about voiceless fricatives are true?
a) Voiceless fricatives rely solely on laminar airflow.
b) Turbulent airflow is generated due to irregular vocal fold vibration in the larynx.
c) The primary noise source is the vocal folds.
d) The noise source is located at the place of articulation.
d) The noise source is located at the place of articulation.
Which of the following are true about the Reynolds number? (Two correct answers.)
a) The Reynolds number increases as fluid velocity increases.
b) Decreasing the characteristic length will increase the Reynolds number.
c) A speech sound having a Reynolds number of 900 indicates that it there’s turbulent flow in the sound.
d) A thicker fluid would cause the Reynolds number to decrease.
a) The Reynolds number increases as fluid velocity increases.
d) A thicker fluid would cause the Reynolds number to decrease.
Which of the following statements are true about fricative loudness? (Two correct answers.)
a) Louder fricatives have lower particle velocity.
b) Voiced fricatives are always louder than voiceless fricatives.
c) Louder fricatives result from an increasing particle velocity.
d) Narrower constrictions increase particle velocity, making the sound louder.
c) Louder fricatives result from an increasing particle velocity.
d) Narrower constrictions increase particle velocity, making the sound louder.
Which of the following explains the higher perceived frequency in sibilant fricatives like [s] in English?
a) The sublingual cavity increases the intensity of lower frequencies.
b) The constriction in sibilants is wider, allowing higher frequencies to resonate.
c) Sibilants are produced with a smaller front cavity, leading to higher resonance frequencies.
d) Sibilants have lower particle velocity, resulting in higher frequency perception.
c) Sibilants are produced with a smaller front cavity, leading to higher resonance frequencies.
John measured the area of the supraglottal constriction of four fricatives, A, B, C, and D, in a previously undescribed language and found the values to be 0.35, 0.25, 0.42, and 0.18 cm2. According the graph we discussed in class (reproduced below), which one of the fricatives will be the loudest?
a) A
b) B
c) C
d) D
d) D
