SYSTEM AND METHOD TO PERFORM IN-EAR NOISE DOSIMETRY AND PERSONAL ATTENUATION RATING UNDER AN ELECTRO-ACOUSTIC EARPLUG WHILE EXCLUDING WEARER-INDUCED DISTURBANCES AND SEPARATING EXPOSURE SOURCES

摘要

A system and method to measure noise reduction and evaluate the contributions of various sound sources to noise exposure dose of exposition using electro-acoustic earplugs is provided. The system may be implemented as an advanced HPD in the form of an electro-acoustical earplug. The earplug comprises an OEM 10 and an IEM. The system is configured to calculate an estimated IEM signal based on calculation of estimates of residual ambient noise, payback sounds or WID present in the ear canal.