.png){kind=logo}
COMD 5070 Exam 2 (Latest 2026/2027 Update) Acoustics of Speech and Hearing| Questions and Verified Answers| 100% Correct| Grade A
COMD 5070 Exam 2 (Latest 2026/2027
Update) Acoustics of Speech and Hearing|
Questions and Verified Answers| 100%
Correct| Grade A
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?
.png)