![]() Airflows tend to be WHAT in people with CT? This is due to.ĥ. s/ improved more with practice than /z/ ADDITIONAL CLINICAL APPLICTATIONS: sdfsdf ADDITIONAL CLINICAL APPLICTATIONS:Ĥ. Takes up to 7 tries to reach maximum performanceĢ. Why should clinicians exercise caution when administering s/z ratio? 1. Both s & z have an aytpical shorter duration and the ratio is around 1Įxample: reduced vital capacity MEASURING RESPIRATION & PHONATION: Phonatory problem: Deficit in laryngeal control speaker lacks normal ability to generate and sustain subglottal pressure for the voicing of /z/ģ. What would the results have to be to suggest there is a respiratory problem? Example? 1. A normal duration of /s/ indicates that the problem is NOT in what domain?ģ. If s/z ratio is > 1, (for example if s is longer than z), what does this suggest? Deficit in.Ģ. Adult: ~ 20 seconds Child: ~ 10 seconds MEASURING RESPIRATION & PHONATION:ġ. Divide duration for /s/ by duration for /z/Ĥ. (1) client sustains /s/ for longest possible duration on a single exhalation (2) client sustains /z/ for longest possible duration on a single exhalationĢ. How long should a normal duration for s/z be for an adult? for a child? 1. Ratio is expected to be around what for a normal speaker?Ĥ. What are the two tasks for measuring the s/z ratio?ģ. ![]() phonatory disorder MEASURING RESPIRATION & PHONATION:ġ. facilitate differential diagnosis of respiratory vs. By providing adequate instructions/models, it reduces the number of trials needed to reach maximum MPT MEASURING RESPIRATION & PHONATION: Speakers rarely reach maximum MPT in the first 3 tries (can take 15-20 tries)Ģ. How can we avoid this issue? By providing. What is the issue of only administering 3 tries when measuring MPT?Ģ. High Fo - it takes higher air pressure to produce a higher Fo, seal at VF's might be incomplete at a higher VF MEASURING RESPIRATION & PHONATION:ġ. Decrease, because of the larger opening/ closing movement of VF's which allows more air to escapeĤ. Larger body size > larger lung volume > longer MPTģ. MPT may decrease slowly at a high or low F0? Why? (2) 1. High vocal intensity causes MPT to do what? Why? (1)Ĥ. Who typically have higher MPT? men or women?ģ. 3 tries MEASURING RESPIRATION & PHONATION:ġ. If MPT is decreased // Problems: reduced lung volume, problems sustaining driving pressure, inefficient glottal valvingĤ. Adequacy of respiratory support & efficiency of valving at VF'sĢ. ![]() Frequently measured as a maximum or average over how many tries? 1. What is the average MPT in an adult speaker? (in seconds)Ĥ. Why would further testing be needed? What are some examples of problems? (3)ģ. The duration of MPT reflects a speaker's: (2)Ģ. Longest amount of time a speaker can sustain a /a/ in one continuous exhalation MEASURING RESPIRATION & PHONATION:ġ. s/z ratio MEASURING RESPIRATION & PHONATION: Drawback: Wide variability across typical speakers makes comparison across norms difficult Two ways to measure Respiration & Phonation? 1. Can be used to track changes after intervention for vocal pathologyĢ. Helpful with patient's who have a reduced range due to difficulty generating respiratory pressure or adducting VFs (like patients with Parkinson's) VRP is a particular sensitive measure of vocal control Why use VRP? (1 main reasons and 2 sub reasons)Ģ. Point of differential register CLINICAL MEASUREMENT OF AMPLITUDE:ġ. Dynamic range is the greatest in the middle of a speaker's Fo range, and smaller at a speaker's highest and lowest FoĢ. What characteristics shape a VRP? Dynamic range is the greatest in.Ģ. ![]() Vocal Range Profile (AKA VRP, AKA phonetogram) CLINICAL MEASUREMENT OF AMPLITUDE:ġ. For a complete picture of vocal amplitude control across Fo, what must we collect? 1. More pressure to create audible phonation CLINICAL MEASUREMENT OF AMPLITUDE:ġ. At higher pithes (with higher VF tension) what is needed? 1. Dynamic range for adult females: 50 - 150 dB SPL & males are slightly higher CLINICAL MEASUREMENT OF AMPLITUDE:Ģ. Dynamic range = the difference between speaker's softest non-whisper phonation vs. To measure limits in vocal control with respect to amplitdue/intensityĢ. Adult females have a dynamic range between: & males are. Dynamic range = the difference between.ģ. Vocal Range Profile CLINICAL MEASUREMENT OF AMPLITUDE:Ģ. Women's voices become LOWER due to hormonal changes Two things we collect when measuring AMPLITUDE? 1. Men's voices become HIGHER due to thinning of VFs How do men and women's voices change over time? Infants: 350- 500 Hz Flexibility of VFs When measuring SFF, should be familiar with the average Fo across a lifespan: Sample duration: there can be significant differences in SFF samples that are 1 second, 30 seconds and 60 seconds What is SFF influenced by? (3) 1. Because it has been found that SFF during sustained phonation was higher than during reading a passage or conversational speechĢ. Why does the elicitation task matters during SFF?Ģ.
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