A wireless power system includes a wireless power transmitting device such as a wireless charging mat for charging devices such as a cellular telephone and an earbuds battery case. The earbuds battery case receives earbuds and charges the earbuds from a battery. The wireless charging mat supports bidirectional in-band communications between the cellular telephone and the earbuds battery case. The earbuds battery case provides the cellular telephone with information on the battery charge level associated with the battery in the earbuds battery case and a battery charge level associated with each earbud in the earbuds battery case. The cellular telephone receives battery charge level information through the wireless charging mat and displays corresponding indicators. The earbuds battery case has a visual output device such as a light-emitting diode that is illuminated to indicate that the earbuds battery case is being charged.

Examples described herein relate to a charging system for wireless earbuds involving charging adapters that are attachable to the wireless earbuds. In some implementations, the charging adapter is attachable to an external surface of an earbud using a magnetic or mechanical interface that align electrodes of the charging adapter with electrodes on the wireless headset, allowing an internal battery of the earbud to draw current and charge from the charging adapter while the earbud is in-ear. Then, when the internal battery is and recharged using a charging case or wall charger, the charging adapter can be detached from the earbud.

The present disclosure provides a sound producing device, at least comprising a housing assembly. The housing assembly comprises a housing and a sealing member. The housing is provided with a plug-in hole, and the plug-in hole runs through a side wall of one side of the housing; the sealing member is used for plugging and sealing the plug-in hole; the plug-in hole comprises at least one hole wall segment provided along a plugging direction of the sealing member; the cross-sectional area of a reference cross section of at least part of the at least one hole wall segment perpendicular to the plugging direction of the sealing member increases gradually along the plugging direction; the sealing member is in plugging fit with the at least one hole wall segment.

The present disclosure provides an acoustic output apparatus including one or more status sensors, at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, at least two first sound guiding holes, and at least two second sound guiding holes. The status sensors may detect status information of a user. The low-frequency acoustic driver may generate at least one first sound, a frequency of which is within a first frequency range. The high-frequency acoustic driver may generate at least one second sound, a frequency of which is within a second frequency range including at least one frequency exceeding the first frequency range. The first and second sound guiding holes may output the first and second spatial sound, respectively. The first and second sound may be generated based on the status information, and may simulate a target sound coming from at least one virtual direction with respect to the user.

A wearable audio device sized to fit within an ear of an user comprises an outer housing; a circuit board positioned within the outer housing; a battery having an anode and a cathode, the battery being connected to the circuit board; a speaker adjacent the battery; and an electromagnetic interference (“EMI”) shield tab coupled to the anode. The EMI shield tab may be configured to shield the speaker from EMI generated by the circuit board and to provide an electrical interconnection to the anode. The EMI shield tab may be comprised of a high magnetic flux permeable metal material

A True Wireless System (TWS)headphone is provided, which comprises a charging case and one or two earbuds. The earbuds may be attached into the charging case by a two pogo pin connector. The earbuds can detect the different status of the battery in the charging case via the two pogo pin connector and can auto power on or off accordingly when taken out or put into the charging case.

A wireless headphone includes a wireless communication unit configured to perform wireless communication with an external terminal, a detection unit configured to detect whether the wireless headphone is worn on an ear of a user, an input detection unit configured to detect an input operation of the user, and a control unit configured to transition, based on detection of a specific input operation from the user by the input detection unit in a state that the detection unit detects that the wireless headphone is not worn on the ear, an operation mode to a pairing mode in which pairing related to the wireless communication with the external terminal is performed.

A setting system of a wireless headphone includes a wireless headphone having a speaker and configured to be worn on an ear, and a wireless terminal and is wirelessly connectable to the wireless headphone. The wireless headphone is configured to register data indicating a correspondence relationship between wireless terminal information on the wireless terminal wirelessly connected to the wireless headphone and sound data capable of specifying the wireless terminal. The wireless terminal sets the sound data audibly outputted by the wireless headphone when the wireless terminal is wirelessly connected to the wireless headphone, and transmits the identification information to the wireless headphone. The wireless headphone registers data indicating a correspondence relationship between the wireless terminal information and the identifiable sound data based on the identification information.

The subject matter described herein provides systems and techniques for controlling the production of eNoise in an audio playback system. The eNoise may be an audible noise produced when a current, such as a noise/ripple current, flows through a battery of the audio playback system. Such eNoise may be reduced by limiting the current, such as noise/ripple current, flowing through the battery. In some examples, the noise/ripple current may be diverted to the main board of the audio playback system by adding a source of current. A circuit to produce such a current may include transistor(s), capacitor(s), and/or resistor(s). Using the current source and/or such a circuit may also divert the noise/ripple current away from the battery, thereby reducing the eNoise produced.

An earpiece includes an earpiece housing, a processor disposed within the earpiece, a speaker operatively connected to the processor, a microphone operatively connected the processor, and a global navigation satellite system (GNSS) receiver disposed within the earpiece. A system may include a first earpiece having a connector with earpiece charging contacts, a charging case for the first earpiece, the charging case having contacts for connecting with the earpiece charging contacts, and a global navigation satellite system (GNSS) receiver disposed within the charging case.