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An Improved Audiometric Earphone

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This paper compares the pressure response versus frequency characteristics of the TDH-39 and the TDH-49 earphones. Both of these earphones were intended for use in audiometry. Data which was taken on the real ear as well as on artificial ears is presented.

JAES Volume 16 Issue 3 pp. 328, 330, 332; July 1968
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AES - Audio Engineering Society