COMD 5070 - Exam 2 UPDATED Exam
Questions and CORRECT Answers
how do you calculate average air flow? - CORRECT ANSWER - dividing volume used by
time
-for example, if 1 liter of air is used and phonation lasts for 5 seconds
-average flow = 1/5 liters per second = 0.2 L/s
what does a u-tube manometer measure? - CORRECT ANSWER - Static pressure
-tube in the shape of a u
water in tube is identical until
water in the tube/pressure applied
displace water
-easure the difference in height=
amount of centimeters of water displaced by pressure applied
u-tube manometer: what is it best used for? - CORRECT ANSWER - -can use to calibrate
equipment used to measure pressure
very low tech
-can easily see how much pressure there was
what is a u-tube manometer not suited for? - CORRECT ANSWER - -rather crude
-measuring pressure during dynamic speech production
what does "h" equal for a u-tube manometer? - CORRECT ANSWER - difference in
cmH2O
during inhalation, what happens to the rib cage and abdomen? - CORRECT ANSWER -
both expand
,during singing, how do the rib cage and abdomen move? - CORRECT ANSWER - they
move independent of each other, making small changes
how can you measure chest wall movements? - CORRECT ANSWER - stretchable bands
around the body (on abdomen and on rib cage) that measure movements
during exhalation, what happens to the rib cage and abdomen? - CORRECT ANSWER -
both contract
what is subglottal pressure? - CORRECT ANSWER - P⌄sub
-pressure below the larynx
-driving pressure for phonation
what are some direct ways to measure subglottal pressure? - CORRECT ANSWER --
tracheal puncture
-esophageal pressure
how can you measure subglottal pressure? - CORRECT ANSWER - there are both direct
(tracheal puncture and esophageal balloon) and indirect measures (psub estimate)
how can you estimate subglottal pressure? - CORRECT ANSWER - produce voiceless
bilabial plosive ("pah, pah, pah")
-when oral pressure equals subglottal pressure
how much subglottal pressure (P⌄sub) is necessary for normal speech? - CORRECT
ANSWER - 5-7 cmH2O
how much subglottal pressure (P⌄sub) is necessary for very loud speech? - CORRECT
ANSWER - 15-20 cmH2O
, there is a clear association between P⌄sub and ____. - CORRECT ANSWER - SPL (sound
pressure level)
what is phonation threshold pressure (PTP)? - CORRECT ANSWER - pressure for folds
to start vibrating
how much PTP is needed to start VF vibration? - CORRECT ANSWER - 3-5 cmH2O
what influences PTP? - CORRECT ANSWER - -dehydration (dried out and less compliant
vocal cords)
-vocal fatigue (swollen vocal cords)
what is pressure? - CORRECT ANSWER - force per unit area
-is a force divided by the area over which the force is exerted
-force/area
what is flow? - CORRECT ANSWER - • E=IR (voltage=current resistance)
- pressure = flow x resistance
- resistance = pressure / flow
what is the unit for pressure in speech research? - CORRECT ANSWER - cmH2O
-how many cm would a water column be displaced by this pressure?
what is the intra-oral air pressure when a vowel is produced? - CORRECT ANSWER -
equal to atmospheric pressure
what is the intra-oral air pressure when a fricative is produced? - CORRECT ANSWER -
elevated
Questions and CORRECT Answers
how do you calculate average air flow? - CORRECT ANSWER - dividing volume used by
time
-for example, if 1 liter of air is used and phonation lasts for 5 seconds
-average flow = 1/5 liters per second = 0.2 L/s
what does a u-tube manometer measure? - CORRECT ANSWER - Static pressure
-tube in the shape of a u
water in tube is identical until
water in the tube/pressure applied
displace water
-easure the difference in height=
amount of centimeters of water displaced by pressure applied
u-tube manometer: what is it best used for? - CORRECT ANSWER - -can use to calibrate
equipment used to measure pressure
very low tech
-can easily see how much pressure there was
what is a u-tube manometer not suited for? - CORRECT ANSWER - -rather crude
-measuring pressure during dynamic speech production
what does "h" equal for a u-tube manometer? - CORRECT ANSWER - difference in
cmH2O
during inhalation, what happens to the rib cage and abdomen? - CORRECT ANSWER -
both expand
,during singing, how do the rib cage and abdomen move? - CORRECT ANSWER - they
move independent of each other, making small changes
how can you measure chest wall movements? - CORRECT ANSWER - stretchable bands
around the body (on abdomen and on rib cage) that measure movements
during exhalation, what happens to the rib cage and abdomen? - CORRECT ANSWER -
both contract
what is subglottal pressure? - CORRECT ANSWER - P⌄sub
-pressure below the larynx
-driving pressure for phonation
what are some direct ways to measure subglottal pressure? - CORRECT ANSWER --
tracheal puncture
-esophageal pressure
how can you measure subglottal pressure? - CORRECT ANSWER - there are both direct
(tracheal puncture and esophageal balloon) and indirect measures (psub estimate)
how can you estimate subglottal pressure? - CORRECT ANSWER - produce voiceless
bilabial plosive ("pah, pah, pah")
-when oral pressure equals subglottal pressure
how much subglottal pressure (P⌄sub) is necessary for normal speech? - CORRECT
ANSWER - 5-7 cmH2O
how much subglottal pressure (P⌄sub) is necessary for very loud speech? - CORRECT
ANSWER - 15-20 cmH2O
, there is a clear association between P⌄sub and ____. - CORRECT ANSWER - SPL (sound
pressure level)
what is phonation threshold pressure (PTP)? - CORRECT ANSWER - pressure for folds
to start vibrating
how much PTP is needed to start VF vibration? - CORRECT ANSWER - 3-5 cmH2O
what influences PTP? - CORRECT ANSWER - -dehydration (dried out and less compliant
vocal cords)
-vocal fatigue (swollen vocal cords)
what is pressure? - CORRECT ANSWER - force per unit area
-is a force divided by the area over which the force is exerted
-force/area
what is flow? - CORRECT ANSWER - • E=IR (voltage=current resistance)
- pressure = flow x resistance
- resistance = pressure / flow
what is the unit for pressure in speech research? - CORRECT ANSWER - cmH2O
-how many cm would a water column be displaced by this pressure?
what is the intra-oral air pressure when a vowel is produced? - CORRECT ANSWER -
equal to atmospheric pressure
what is the intra-oral air pressure when a fricative is produced? - CORRECT ANSWER -
elevated
