COMD 5070 Exam 2 (Latest 2024 / 2025 Update) Acoustics of Speech and Hearing | Questions and Verified Answers | 100% Correct | Grade A - Utah
Question:
what is subglottal pressure?
Answer:
P⌄sub -pressure below the larynx -driving pressure for phonation
Question:
what are some direct ways to measure subglottal pressure?
Answer:
-tracheal puncture -esophageal pressure
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Question:
how can you measure subglottal pressure?
Answer:
there are both direct (tracheal puncture and esophageal balloon) and indirect measures (psub estimate)
Question:
how can you estimate subglottal pressure?
Answer:
produce voiceless bilabial plosive ("pah, pah, pah") -when oral pressure equals subglottal pressure
Question:
how much subglottal pressure (P⌄sub) is necessary for normal speech?
Answer:
5-7 cmH2O
Question:
how much subglottal pressure (P⌄sub) is necessary for very loud speech?
Answer:
15-20 cmH2O
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Question:
there is a clear association between P⌄sub and ____.
Answer:
SPL (sound pressure level)
Question:
what is phonation threshold pressure (PTP)?
Answer:
pressure for folds to start vibrating
Question:
how much PTP is needed to start VF vibration?
Answer:
3-5 cmH2O
Question:
what influences PTP?
Answer:
-dehydration (dried out and less compliant vocal cords) -vocal fatigue (swollen vocal cords)
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Question:
what is pressure?
Answer:
force per unit area -is a force divided by the area over which the force is exerted -force/area
Question:
what is flow?
Answer:
• E=IR (voltage=current resistance)
- pressure = flow x resistance
- resistance = pressure / flow
Question:
what is the unit for pressure in speech research?
Answer:
cmH2O -how many cm would a water column be displaced by this pressure?
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