Patent ID: 8223984
Filing Date: 2012-07-17
Classification: A61F,H04R

Abstract:
1. A system for forming hearing protectors, comprising: at least one first ear cup and at least one second ear cup, the first and second ear cups each having an outer cup portion and an inner cup portion, a partition separating the outer cup portion and the inner cup portion, a noise-reducing space defined entirely within the inner cup portion, and at least one electronic unit with at least one speaker, wherein the noise reducing space of the at least one first ear cup is a different size than the noise reducing space of the at least one second ear cup, the ear cups being arranged to accommodate the electronic unit, each of the ear cups being arranged to accommodate the speaker in such a manner that an inner distance is obtained in the noise-reducing space from the speaker and in the direction of the ear of a user, when the user is wearing the ear cup, the ear cups further having a resonance space, which is arranged to function as a sounding board for sound emitted by the speaker, and the inner distance and the volume of the resonance space of the first ear cup being adapted to the inner distance and the volume of the resonance space of the second ear cup such that, when the electronic unit is mounted in each ear cup, sound emitted by the speaker in each ear cup produces substantially the same sound characteristic from the first ear cup as that from the second ear cup.