TY - GEN AU - Randall Wagner C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 2013-01-24 DO - https://doi.org/10.6028/jres.118.005 LA - en M1 - 118 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 2013 TI - NIST System for Measuring the Directivity Index of Hearing Aids under Simulated Real-Ear Conditions ER -