Abstract
There has been in recent literature some evidence indicating that intermittent sound as opposed to steady sound sources has a more disturbing effect on Ss. This paper includes those studies which have appeared since 1950 and indicates that high intensity or intermittent sound generally produces symptoms of discomfort, instability, and distraction. In addition decrements in performance may be related to the level of the sound as well as its intermittency. Changes in blood pressure, respiration, eeg, pulse rate, etc., as a result of sound have been reported in some studies. Some theoretical issues are included in the discussion. 80 refs.

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