Disclosed is an open headphone, comprising a front cover, a loudspeaker unit and a rear housing. A front headphone chamber is formed between the front cover and the loudspeaker unit. A rear headphone chamber is formed between the loudspeaker unit and the rear housing. The front cover is provided with several sound output holes. The loudspeaker unit has a middle loudspeaker hole which is through in a front-rear direction. The rear housing is also provided with a sound guide tube. The rear end of the sound guide tube is in communication with the external space of the headphone. The front end of the sound guide tube is inserted in the middle loudspeaker hole and at a distance from a vibrating diaphragm, and the distance is larger than a maximum vibration displacement of the vibrating diaphragm. The open headphone of the present disclosure has high-quality bass performance, and other advantages, such as that the sound field is open and natural, that the user is not easy to become fatigue after long-term use, and that it will not cause damage to people's hearing. By inserting the front end of the sound guide tube in the middle loudspeaker hole, which is able to reduce the volume of the rear headphone chamber, so as to make the whole headphone small and easy to carry.

A hearing aid comprises a microphone on a proximal side of a device housing and a loudspeaker which via a transmission channel is in open communication with a sound-emitting opening of the device. A sound processing device serves to generate sound received by the microphone to the loudspeaker in amplified form. The device housing is provided on a distal side with an optionally sealed battery chamber for receiving a battery therein. The transmission channel is at least almost wholly separated from the microphone acoustically in order to prevent acoustic feedback. The battery chamber comprises ventilation means for the purpose of increasing the lifespan of the battery.

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.

An acoustic device and an electronic device including the same are provided. The acoustic device and an electronic device include a main body including at least one acoustic output port and at least one air vent port, a speaker unit accommodated in the main body, a first ear tip including at least one first opening area corresponding to the at least one air vent port and detachably coupled to the main body, and a second ear tip including at least one second opening area corresponding to the at least one air vent port and detachably coupled to the main body, wherein one of the first ear tip or the second ear tip may be coupled to the main body so that the main body is worn in a user's ear, and when the first ear tip is mounted, a larger area of the at least one air vent port may be exposed to an external space through the at least one first opening area than when the second ear tip is mounted.

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.

A standard attachment for a standard earpiece insertable into an ear canal in a direction of insertion, by which, compared to customary attachments, an improved adaptation of the corresponding standard earpiece to an ear canal is achieved, and therefore improved audio perception, and also improved wearing comfort of the respective hearing aid is ensured. The standard attachment contains a headpiece at one end and, adjoining the latter, a wing portion. The outer contour of the headpiece is configured to allow the headpiece to bear on the wall of the ear canal at several points or on several lines.

In general, the subject matter described in this disclosure can be embodied in methods, systems, and computer-readable devices. An audio processing device plays a source audio signal with an electroacoustic transducer of a user earpiece, and records an aural signal that is sensed by same said electroacoustic transducer. The audio processing device determines values of one or more features of the aural signal that indicate a characteristic of a space in which the user earpiece is located. The audio processing device compares the determined values of the one or more features of the aural signal with pre-defined values of the one or more features. Based on a result of the comparing, the audio processing device determines whether the user earpiece is located at a user's ear.

In one embodiment, an earpiece system comprising an enhancer is provided. The enhancer is configured to receive an earbud of a speaker and to fit in a user's ear. The enhancer includes a first portion having a first surface that defines a concave crus relief feature. The enhancer further includes a second portion extending from the first portion and forming a sound tunnel having an opening at an end opposite the first portion, and a flexible skirt positioned with the sound tunnel and projecting over the second portion to resiliently seal with the user's ear canal when inserted therein.

Embodiments include a head-worn computer comprising, a front frame mechanically adapted to secure a see-through computer display; an arm, secured to the front frame, mechanically adapted to secure the front frame to the head of a user; and the arm comprising an internal speaker system, enclosed by the arm, wherein the internal speaker system comprises a back cavity and a speaker, the arm further comprising an inlet vent positioned to vent the back cavity and an audio outlet vent positioned to vent the speaker.

A speech intelligibility enhancing system for difficult acoustical conditions is disclosed, the speech intelligibility enhancing system comprising at least one ear plug (201) for insertion in an ear canal (218) of a person, the at least one ear plug being arranged with an ear canal facing portion (401) and an environment facing portion (402), and the at least one ear plug comprising an acoustically attenuating path (214; 214, 213) comprising a vent (214) coupling said environment facing portion (402) with said ear canal facing portion (401); and an electroacoustic path (202, 204, 209; 202, 203, 204, 208, 209, 210, 211, 212) comprising a microphone (202) at said environment facing portion (402), a variable gain (204) and a loudspeaker (209) at said ear canal facing portion (401); wherein said acoustically attenuating path (214; 214, 213) is arranged with a transfer function from said environment facing portion (402) to said ear canal facing portion (401) having a low pass characteristic having a low pass cut¬off frequency and said low pass characteristic attenuating sound by a nominal attenuation (Go) for frequencies below said cut-off frequency.