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Journal of Speech and Hearing Research Vol.20 808-812 December 1977.
© American Speech-Language-Hearing Association
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Estimation of Lung Volume Change from Torso Hemicircumferences

R. J. Baken
Teachers College, Columbia University, New York

A technique for estimating lung volume change is described. Voltages proportional to rib cage and abdominal hemicircumferences are produced by Whitney-gage transducers in a standard bridge circuit. The weighted sum of these voltages can be adjusted to produce a good estimate of lung volume change. The instrumentation does not obstruct articulatory movements, load the chest wall, or require restraint of the subject. In addition, it is easy and inexpensive to construct.






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Copyright © 1977 by the American Speech-Language-Hearing Association.