American National Standard Specification of Hearing Aid Characteristics
American Institute of Physics for the Acoustical Society of America, 1982 - Hearing aids - 14 pages
9 pages matching frequency response curve in this book
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acoustic gain AGC aids AGC hearing aids American National Standard ANSI Appendix ASACOS automatic gain control average BATTERY SIMULATORS Beranek and Newman Bioacoustics Brenig Canoga Park control microphone coupler sound pressure direct current directional hearing aids distortion measurements East 45th Street electrical input equivalent input noise frequency range frequency response curve gain control full-on gain control position gain control setting H. E. von Gierke Hearing Aid Characteristics HFA full-on gain information purposes input noise level input sound pressure level of 50 Low band Measurement Configuration measurement microphone microphone opening microphone system National Standard Specification reference test gain reference test position saturation sound pressure shown in Fig Society of America sound pres sound pressure level sound source Specification of Hearing SSPL90 curve Standards Manager Street New York sure level Table B1 test gain control test space Tonndorf total harmonic distortion U.S. Army U.S. Department Vice Chairman voltage