Accession Number : AD0164902
Title : Earphone Receiver Attenuation Measurement Technique.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Tegt,Richard P. ; Robertson,Douglas G. ; Blattel,Thomas V.
Report Date : 24 APR 1973
Pagination or Media Count : 4
Abstract : The patent describes a system for measuring the effectiveness of the sound attenuating function of an earphone sound attenuation cover. It uses the earphone transducer as a microphone and measures the noise level with the ear cover in place on the user's ear and with the cover removed, the difference in decibels being interpreted as the acoustic attenuation provided by the ear cover.
Descriptors : *Earphones, *Attenuation, *Patents, Measurement
Subject Categories : Non-radio Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE