An open audio device includes an acoustic radiator that emits front-side acoustic radiation from its front side and emits rear-side acoustic radiation from its rear side, a front acoustic cavity that receives front-side acoustic radiation, and a rear acoustic cavity that receives rear-side acoustic radiation. At least one sound-emitting opening is acoustically coupled to the front acoustic cavity or the second acoustic cavity. The open audio device also includes a removable accessory that includes an acoustic transmission line that is acoustically coupled to the at least one sound-emitting opening when the removable accessory is attached to the open audio device.

The hearing aid includes a signal processor having a level-dependent filter section and a level-independent filter section. The level-dependent filter section provides level-dependent gain wherein sound is attenuated or amplified depending on the level of the incoming sound. The level-independent filter section provides substantially constant gain wherein sound that passes through the filter section is not changed in level, and provides transparency in that it corrects for insertion loss caused by the earpiece of the hearing aid when worn by the user. The level dependent and level independent filter sections, when fitted to the user, greatly improve the user's perception of sound.

A flexible arm that is configured to be located between and physically and electrically connect an acoustic module of an open-ear headphone to a battery housing of the open-ear headphone. The flexible arm defines an original resting length and position between the acoustic module and the battery housing. The flexible arm includes a flexible printed circuit that extends through the entire original resting length of the flexible arm and comprises a conductor that is configured to carry electrical energy between the acoustic module and the battery housing. A first interface structure is coupled to one of the acoustic module and the battery housing. A flexible material encases at least some of the flexible printed circuit and at least some of the first interface structure.

Seamless earbud structures and methods for making the same are disclosed. Seamless earbud structures can be constructed using an insert molding construction method, which overmolds a cosmetic material over two sub-enclosures that are mated together. The two sub-enclosures form a housing that can encompass a driver assembly (e.g., woofer and tweeter), a conductor bundle, and provide one or more acoustic volumes. The housing has a non-occluding member and a neck member, and has a seamless or nearly seamless construction. The cosmetic material is insert molded around the housing to provide a smooth and seamless surface disposed around the periphery of the housing.

A standard earpiece which is insertable in an ear canal in a direction of insertion has a corresponding retaining cap. The retaining cap is configured in such a way, in this case, that it equally satisfies the requirements for wearing comfort, a secure seating of the standard earpiece, and proper ventilation of the ear.

An embodiment of the invention provides a wireless in-ear utility device that rests in the user's ear canal near the user's eardrum. The in-ear utility device may be configured in a variety of ways, including, but in no way limited to a smart in-ear utility device, a flexible personal sound amplification product, a personal music player, a “walkie-talkie” and the like.

An electronic apparatus according to an embodiment may comprise: a housing including a first housing having a first surface facing a first direction and a second housing having a second surface facing a second direction opposite to the first direction; a first audio port having a sound hole formed in the first surface of the housing; a speaker arranged in the housing and configured to output the sound to the outside via the sound hole of the first audio port; and a first recess formed by extending from the first audio port, wherein the first recess extends from the first audio port by a first length to have a first depth and a first width and is configured to form a passage through which the sound output from the speaker moves while the electronic apparatus is worn.

An ear-canal earpiece having an electroacoustic sound transducer, a sound guide unit having a first and a second end for guiding the sound from the electroacoustic sound transducer to an ear of a user and at least one portion. The ear canal earpiece has a canal having a first end open towards the ear canal and a second outwardly open end. A diaphragm is provided in the canal and extends over the entire cross-section of the canal.

There is provided a method of determining a three-dimensional shape of an insert for insertion into an ear. The method includes receiving image data corresponding to a two-dimensional image of an ear, processing the image data to measure at least one biometric feature of the ear, the at least one biometric feature being indicative of a three-dimensional shape of at least part of the ear, and determining a three-dimensional shape of an insert for insertion into the ear by matching said at least one biometric feature with one of a plurality of pre-stored three-dimensional shapes. Each pre-stored three-dimensional shape corresponds to a respective ear.

An earmold having an earmold shell, the earmold shell having a first end facing a tympanic membrane when the earmold is worn by a user, and a second end facing toward a surrounding of the user when the earmold is worn by the user, includes: a receiver configured to provide an audio output signal; a receiver channel coupled to an output of the receiver and extending to a receiver opening in the first end; and a vent channel coupled to the receiver channel through a first vent port, the vent channel having a vent opening in the second end; wherein the receiver channel comprises a closing element, the closing element comprising a first magnetic member, wherein the closing element is configured to cause the first vent port to be open when in a first state, and to cause the first vent port to be closed when in a second state.