Reference thresholds for EARTONE 3A insert earphones.
Hearing threshold determinations have been performed with EARTONE 3A insert earphones and compared with threshold measurements performed with TDH 39 supra-aural earphones. 22 normal hearing subjects participated. Results are given as SPL values measured in an acoustic coupler (IEC 126) and an occluded-ear simulator (IEC 711).
Poulsen
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Acoustics Laboratory, Technical University of Denmark, Lyngby.
D000328:Adult; D000669:Amplifiers, Electronic; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D004867:Equipment Design; D005260:Female; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008297:Male