Abstract: An earplug (10, 80) for selective attenuation of sound has a body with at least one sound path. An insert (34) is housed in the body (13), which has at least one sound passage with an acoustic filter. The acoustic filter is configured to provide a specific frequency response and thus a determined attenuation of sound passing through the earplug. Means (14) is arranged at a top surface adapted to activate or deactivate the sound path. Each acoustic filter comprises an upper acoustic port (36, 37), at least one acoustic mesh (35) and/or acoustic membrane (37, 39), an acoustic chamber (41, 44) and a lower acoustic port (42, 43). An insert (34) with an acoustic filter for selective attenuation of sound is provided for use in an earplug.

Abstract: An earplug (10, 80) for selective attenuation of sound has a body with at least one sound path. An insert (34) is housed in the body (13), which has at least one sound passage with an acoustic filter. The acoustic filter is configured to provide a specific frequency response and thus a determined attenuation of sound passing through the earplug. Means (14) is arranged at a top surface adapted to activate or deactivate the sound path. Each acoustic filter comprises an upper acoustic port (36, 37), at least one acoustic mesh (35) and/or acoustic membrane (37, 39), an acoustic chamber (41, 44) and a lower acoustic port (42, 43). An insert (34) with an acoustic filter for selective attenuation of sound is provided for use in an earplug.

Abstract: An earplug for water sports has a wing adapted for fixation of the ear plug in the outer ear of the user, and has a tube of a funnelled and tapered configuration forming an audio channel extending within the ear canal. The wing is arranged in an angled position in relation to the tube for adaption to the anatomy of the ear, and has a flexible portion for adaption to the outer ear. A hollow tip element with flanges for sealing the ear canal and for fixating the ear plug in the ear canal surrounds a narrow portion of the tube. The tip element has a nose end with recessed areas for forming a free air canal. The ear plug has a mesh with an open area structure for air permeability that allows sound to pass the mesh and through the audio channel, while preventing water and wind from entering the ear canal.

Abstract: The inventions provided herein relate to amphiphilic peptides and particles comprising the amphiphilic peptides. Such amphiphilic peptides and particles described herein can be used as a delivery system, e.g., for therapeutic or diagnostic purposes, or as cell penetration vehicles or cell transfection agents.

Abstract: The inventions provided herein relate to amphiphilic peptides and particles comprising the amphiphilic peptides. Such amphiphilic peptides and particles described herein can be used as a delivery system, e.g., for therapeutic or diagnostic purposes, or as cell penetration vehicles or cell transfection agents.