The Efficiency of Limited Frequency Audiometric Screening in a School Hearing Conservation Program

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Abstract
Introduction During recent months, studies have been reported relative to a new method for audiometric screening which has been designated as "limited frequency" testing.4-7It has been proposed that this method be substituted for present sweep-check and group test methods used in school hearing conservation programs. As recommended by House and Glorig, the test would consist simply of the presentation of a 2,000 cycle and a 4,000 cycle tone at a specified intensity (presumably 15 or 20 db.) to the ear under test. It has been further stated that approximately the same results can be obtained by presenting only the 4,000 cycle tone. At least one manufacturer has brought out a small transistorized instrument for use in "limited frequency" testing. If the efficiency of this type of test could be established, there would be many obvious advantages in its use in preference to the routine sweep-check test, and possibly

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