Phonatory System Physiology: Phonation Threshold Pressure

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4 Terms

1
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How much alevolar pressure in cmH20 needed to indicate glottal cycle?

3-6 quiet
7-10 conversational
11-80 loud

2
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phonation threshold pressure

refers to minimal alveolar pressure needed to innate glottal cycle, depending on how loud you want to speak

3
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What is phonation threshold pressure (PTP) related to?

vocal intensity (loudness)

ex: Example: 3 cmH20 ~ 45 dbSPL in vocal intensity

--- And doubling cmH20 results in 8 to 12 dbSPL increase in vocal intensity

- conversational- 60 db SPL

loud- 115 db SPL

4
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