American National Standard specification of hearing aid characteristics
American Institute of Physics for the Acoustical Society of America, 1982 - Health & Fitness - 14 pages
10 pages matching frequency response curve in this book
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acoustic gain Acoustical Society AGC aids AGC hearing aids American National Standard ANSI Appendix Architectural Acoustics ASACOS automatic gain control average BATTERY SIMULATORS Beranek and Newman Canoga Park control microphone coupler sound pressure directional hearing aids 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 hearing aid measurement HFA full-on gain information purposes input noise level input sound pressure ISO/TC level of 50 Low band Measurement Configuration measurement microphone microphone opening microphone system Musical Acoustics 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 Standards Secretariat Street New York sure level test gain control test space Tonndorf total harmonic distortion U.S. Army U.S. Department Vice Chairman voltage