Abstract: An earphone comprising a rear chamber and a vent structure. The vent structure comprises a longitudinal recess in the housing wall, which recess is defined by a bottom wall and recess walls connecting the bottom wall and the housing wall, a recess opening in the recess, which recess opening connects the recess and the rear chamber, a mesh device arranged parallel with the bottom wall, whereby a longitudinal recess cavity is provided between the bottom wall and the mesh structure. The invention also relates to the manufacturing such an earphone.

Abstract: Disclosed herein are examples of an in-ear audio device comprising a speaker cavity containing a speaker, a resonator comprising a resonator cavity and a resonator vent, wherein the resonator cavity is in fluid communication with the speaker cavity via the resonator vent, and a microphone comprising a microphone inlet, wherein the speaker cavity is in fluid communication with the microphone inlet via the resonator.

Abstract: An earphone comprising a rear chamber and a vent structure. The vent structure comprises a longitudinal recess in the housing wall, which recess is defined by a bottom wall and recess walls connecting the bottom wall and the housing wall, a recess opening in the recess, which recess opening connects the recess and the rear chamber, a mesh device arranged parallel with the bottom wall, whereby a longitudinal recess cavity is provided between the bottom wall and the mesh structure. The invention also relates to the manufacturing such an earphone.

Abstract: An earphone (1) comprising an earphone housing (2), a speaker unit (3), the speaker unit (3) comprising a diaphragm (4). A front chamber (29) is defined in the earphone between a front side (31) of the diaphragm (4) and the user (7), when the earphone (1) is worn. A rear chamber (27) is defined between the earphone housing (2) and a rear side (32) of the diaphragm (4). The earphone (1) comprises an active noise cancelling feedback microphone (9), which is arranged in the rear chamber (27) and which comprises a microphone opening (11). The diaphragm (4) comprises a cylindrical part (14), to which a voice coil (12) is attached, and an outer ring part (15) extending from the cylindrical part (14) in a direction away from a centre axis (30) of the diaphragm (4). The feedback microphone (9) is arranged farther from the centre axis (30) than the voice coil (12).

Abstract: An earphone (1) comprising an earphone housing (2), a speaker unit (3), the speaker unit (3) comprising a diaphragm (4). A front chamber (29) is defined in the earphone between a front side (31) of the diaphragm (4) and the user (7), when the earphone (1) is worn. A rear chamber (27) is defined between the earphone housing (2) and a rear side (32) of the diaphragm (4). The earphone (1) comprises an active noise cancelling feedback microphone (9), which is arranged in the rear chamber (27) and which comprises a microphone opening (11). The diaphragm (4) comprises a cylindrical part (14), to which a voice coil (12) is attached, and an outer ring part (15) extending from the cylindrical part (14) in a direction away from a centre axis (30) of the diaphragm (4). The feedback microphone (9) is arranged farther from the centre axis (30) than the voice coil (12).

Abstract: An earphone is provided, the earphone being configured to provide an acoustic output signal to an ear of a wearer in dependence on an earphone audio signal and further configured to be arranged on the wearer's head in an operating position such that a front cavity between the head and the earphone is separated from ambient space. The earphone comprises a housing having a housing wall separating a rear cavity from the front cavity and from ambient space, an ear cushion, a first diaphragm suspended across an opening in the housing wall between the front cavity and the rear cavity and configured to be actively driven. The earphone further has a port structure fluidly connecting the rear cavity and ambient space through the housing wall.

Abstract: An earphone simultaneously allows high-level low-frequency sound and effective noise reduction. The earphone has a front cavity separated from ambient space The earphone has a housing having a wall separating a rear cavity with an acoustic compliance from the front cavity and from ambient space; a first diaphragm reciprocatably suspended across a first through hole in the housing wall between the front cavity and the rear cavity and adapted to be actively driven to provide the acoustic output signal; and a second diaphragm reciprocatably suspended in the housing wall between the rear cavity and ambient space where the acoustic resonant system is configured such that the resonance frequency is below 500 Hz. The second diaphragm attenuates acoustic signals entering the rear cavity from ambient space at frequencies above the resonance frequency and virtually increases the acoustic compliance of the rear cavity at frequencies below the resonance frequency.

Abstract: The present invention relates to an earphone (1, 201, 401, 601) with noise reduction, i.e. an earphone adapted to attenuate acoustic noise approaching a wearer's ear (7). The present invention aims at providing an earphone (1, 201, 401, 601) that may simultaneously allow achieving high-level low-frequency sound and effective noise reduction. This is achieved by an earphone (1, 201, 401, 601) adapted to provide an acoustic output signal to an ear (7) of a wearer in dependence on an earphone audio signal. The earphone (1, 201, 401, 601) is further adapted to be arranged on the wearer's head (2) in an operating position such that a front cavity (5) between the head (2) and the earphone (1, 201, 401, 601) is separated from ambient space (6).