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From: Bruce Poburka
Date: 10/3/02
Time: 4:21:24 PM
Remote Name: 134.29.11.28
Hello Mike,
I'm sorry, but I am not familiar with Ronald Muirden. From your comments, it sounds like there are indeed some parallels...dating back almost 30 years!
Regarding your request for clarification on the lung volume issues. When a large amount of air is inspired, it creates quite a bit of pressure inside the lungs and throughout the chest area because in order to get that much air in the lungs, many structures had to be displaced from their normal resting posture (lungs inflated, ribs raised, diaphragm flattened, stomach pushed outward). They all want to relax/return to their resting positions. This causes a large expiratory force that exceeds what someone would normally use for speech. Some people try to hold all of that pressure back by tightening the larynx when they speak, so that all of the air doesn't come rushing out all at once. So, the closure/tightening of the larynx is a compensation by the speaker to hold back some of the excessive pressure that was created by the deep breath.
I hope that helps clear things up...thank you for your question.