Measurement of Airflow in Speech It has been shown previously that a mask-type wire screen pneumotachograph can be constructed with a time resolution of % msec. In this paper it is shown that with careful design a resolution of about % msec can be achieved. The various factors involved in optimizing such a mask are ... Research Article
Research Article  |   March 01, 1977
Measurement of Airflow in Speech
 
Author Affiliations & Notes
  • Martin Rothenberg
    Syracuse University, New York
Article Information
Research Articles
Research Article   |   March 01, 1977
Measurement of Airflow in Speech
Journal of Speech, Language, and Hearing Research, March 1977, Vol. 20, 155-176. doi:10.1044/jshr.2001.155
History: Received June 14, 1976 , Accepted October 15, 1976
 
Journal of Speech, Language, and Hearing Research, March 1977, Vol. 20, 155-176. doi:10.1044/jshr.2001.155
History: Received June 14, 1976; Accepted October 15, 1976

It has been shown previously that a mask-type wire screen pneumotachograph can be constructed with a time resolution of % msec. In this paper it is shown that with careful design a resolution of about % msec can be achieved. The various factors involved in optimizing such a mask are described. A major practical limitation in the design has been the need for a fast-responding differential pressure transducer to measure mask pressure; however, a simple electrical compensating network is described that allows the use of a nondifferential transducer. Also determined are the conditions under which breath moisture condensing on the wire screen affects the performance of the mask. An example is given of how a high-speed pneumotachograph can be used, with a measure of the pressure across a constriction in the vocal tract, to derive the time variation of the flow conductance and resistance at that constriction. The advantages of a high-speed pneumotachograph in laryngeal frequency extraction are also considered.

Order a Subscription
Pay Per View
Entire Journal of Speech, Language, and Hearing Research content & archive
24-hour access
This Article
24-hour access