Patent ID: 8903114

Claim:
An in-ear device for selectively adjusting the range or level of sound frequencies reaching the inner ear of a wearers ear, said device comprising a main body having an innermost face and an outermost face, a canal inside the main body and extending from an inner end of the innermost face to an outer end of the outermost face of the main body and splitting into at least two derivative canals adjacent the outermost face within a generally annular zone defined thereon, each said canals being at least partially filled with a respective filtering material, a knob movably attached to the outermost face of the main body and defining a peripheral edge thereof extending beyond the inner zone so as to cover the inner zone, said knob having a channel formed within an inner surface thereof, said channel extending generally radially from an open end thereof at the knob periphery to an inner end thereof adjacent the annular zone, the inner end of the channel being selectively in fluid communication and in alignment with the outer end of only one of said at least two derivative canals at a time upon rotation thereof relative to the main body so as to selectively allow external sound to flow therethrough and reach the inner ear of the wearer's ear.