COMD 5070 Exam 2 2026/2027 Update Acoustics of Speech and Hearing Questions and

COMD 5070 Exam 2 ( 2026/2027 Update) Acoustics of Speech and Hearing Questions and Answers

COMD 5070 Exam 2 ( 2026/2027

Update) Acoustics of Speech and Hearing

Questions and Answers

Correct

Q: what is subglottal pressure?

Answer:

P⌄sub

-pressure below the larynx

-driving pressure for phonation

Q: what are some direct ways to measure subglottal pressure?

Answer:

-tracheal puncture

-esophageal pressure

Q: how can you measure subglottal pressure?

Answer:

there are both direct (tracheal puncture and esophageal balloon) and indirect measures (psub

estimate)

Q: how can you estimate subglottal pressure?

Answer:

produce voiceless bilabial plosive ("pah, pah, pah")

-when oral pressure equals subglottal pressure

Q: how much subglottal pressure (P⌄sub) is necessary for normal speech?

Answer:

5-7 cmH2O

Q: how much subglottal pressure (P⌄sub) is necessary for very loud speech?

Answer:

15-20 cmH2O

Q: there is a clear association between P⌄sub and ____.

Answer:

SPL (sound pressure level)

Q: what is phonation threshold pressure (PTP)?

Answer:

pressure for folds to start vibrating

Q: how much PTP is needed to start VF vibration?

Answer:

3-5 cmH2O

Q: what influences PTP?

Answer:

-dehydration (dried out and less compliant vocal cords)

-vocal fatigue (swollen vocal cords)

Q: what is pressure?

Answer:

force per unit area

-is a force divided by the area over which the force is exerted

-force/area

Q: what is flow?

Answer:

• E=IR (voltage=current resistance)

- pressure = flow x resistance

- resistance = pressure / flow

Q: what is the unit for pressure in speech research?

Answer:

cmH2O

-how many cm would a water column be displaced by this pressure?

Q: what is the intra-oral air pressure when a vowel is produced?

Answer:

equal to atmospheric pressure

Q: what is the intra-oral air pressure when a fricative is produced?