Noise protection verification device

Ear protecting device comprising:

• a sealing section (2) for acoustically sealing the meatus (3) of a human;
• a sound generator;
• an electronics unit (E3) connected to supply a predetermined signal to the sound generator (SG);
• the sound generator (SG) having a sound outlet (SSG) directed toward the user meatus (3) and generating a resulting sound field in the meatus (3) in response to the supplied predetermined signal;
• an inner microphone (M2) with a sound inlet (S2) directed toward the meatus (3), arranged for measuring the resulting sound field in the meatus (3);
• the inner microphone being connected to the electronics unit (11,E3),
• the electronics unit comprising a sound analyser coupled to said inner microphone (M2) for analyzing sound characteristics of the resulting sound field in the meatus (3), and producing analyzed sound characteristics;
• storing unit in the electronics unit (11,E8,E9,E10) providing storage of measured predetermined sound characteristics of a properly functioning ear protecting device;
• a comparing unit in the electronics unit (11,E3) comparing the inner microphone (M2) analyzed sound characteristics with the stored measured predetermined sound characteristics;
• and
• indicating unit coupled to said comparing unit (11,E3) the indicating unit being activated if said analyzed sound characteristics differ significantly from said predetermined sound characteristics.