title: The measurement of audiometric zero level of air conduction.
abstract: The audiometric zero level of air conduction for 100 healthy youths was determined over a frequency range from 20 Hz to 10 KHz in 1971-1973 under the laboratory conditions. The results obtained have been further verified recently on a selected group of 12 persons. This paper also presents the transfer experiments from the original earphone TDH-39(MX-41/AR) to six other types of earphones. The deviation of our data thus obtained from the recommendation by ISO is discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D000388:Air; D001299:Audiometry; D001301:Audiometry, Pure-Tone; D004056:Differential Threshold; D005260:Female; D006801:Humans; D008297:Male