Acoustical Society of America Standard: Specification of Hearing Aid Characteristics
American Institute of Physics for the Acoustical Society of America, 1976 - Hearing aids - 7 pages
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90-dB input sound abcissa adjustment AGC aids American National Standards ANSI Architectural Acoustics ASA Standards ASA STD Bioacoustics Brenig Bruce Lindsay Chairman coupler sound pressure decibel defined distortion measurements East 45th Street Engineering equivalent input noise exceed frequency range frequency response curve gain control full-on gain control position H.E. von Gierke HA-2 earphone coupler Hearing Aid Characteristics HF-average full-on gain input noise level input signal input sound pressure internal impedance level of 60 manufacturer's specified value measured curve Melnick microphone system National Standards Institute Physical Acoustics Physiological Acoustics random noise reference test gain reference test position saturation sound pressure Secretary Acoustical Society Society of America sound entrance opening sound pressure level sound source Specification of Hearing specified tolerance Standards Committee S3 Standards Manager STANDARDS PUBLICATION PROGRAM Street New York Supply voltage test conditions test equipment test gain control Tolerance.-The Tonndorf total harmonic distortion tube U.S. Army U.S. Department