A method for checking a PPG sensor of a hearing apparatus that has a rechargeable battery. A charger has a receiving space for the hearing apparatus and a testing environment for testing the functionality of the PPG sensor. The hearing apparatus is placed in the receiving space and the test environment is used to perform a function test on the PPG sensor.

A hearing device is configured to be worn in an ear of a user, and is configured to provide an audio signal to the user. The hearing device comprises a circuit assembly. The circuit assembly comprises a printed circuit board assembly. The printed circuit board assembly comprises a first circuit board, a second circuit board, and a third circuit board between the first and second circuit boards. The circuit assembly comprises a battery, wherein the printed circuit board assembly is folded about the battery; and an antenna comprising an antenna element, the antenna being configured for emission and reception of electromagnetic radiation at a wavelength (λ); wherein the antenna element has a first end connected to a feed, wherein the feed is provided in a portion of the first or third circuit board which is adjacent an interconnection between the first and third circuit boards.

A hearing instrument charger device for charging an individually shaped hearing instrument, includes: a charger casing; a charger power supply within the charger casing; a first charger coil connected to the charger power supply; charger electronics for controlling charging of the hearing instrument; and a holder configured for receiving the hearing instrument, the holder located within the charger casing; wherein the holder for the hearing instrument has a shape that is specific for the individually shaped hearing instrument, such that when the individually shaped hearing instrument is received in the holder, a second charger coil of the individually shaped hearing instrument is in an operative position for receiving charging power from the first charger coil of the hearing instrument charger device.

A system with a first hearing device including a rechargeable power source, a second hearing device including a rechargeable power source, and a hearing device charger including a charger housing, a power source, charge circuitry operably connected to the power source, a first charge location and a second charge location. The first hearing device, the second hearing device and the hearing device charger may be respectively configured such that the first hearing device will be magnetically attracted to the hearing device charger in response to the first hearing device being positioned at the first charge location, the first hearing device will be magnetically repelled by the hearing device charger in response to the first hearing device being positioned at the second charge location, the second hearing device will be magnetically attracted to the hearing device charger in response to the second hearing device being positioned at the second charge location, and the second hearing device will be magnetically repelled by the hearing device charger in response to the second hearing device being positioned at the first charge location.

According to an embodiment, a hearing aid is disclosed. The hearing aid includes a first functional unit and a second functional unit. The second functional unit is configured to removably couple with the first functional unit. The coupling provides at least a mechanical connection between the first functional unit and the second functional unit. The first functional unit includes a moveable element that is configured to move between a first position and a second position. In the first position, the moveable element is contained entirely within the first functional unit. In the second position, a part of the moveable element is configured to protrude out of the first functional unit. The second functional unit includes a recess configured to receive the part of the moveable element that protrudes out of the first functional unit such that the first functional unit and the second functional unit are immovably locked with respect to each other in response to the moveable element is received in the recess.

The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e. changes) in the supply voltage based on the enablement signals and a fitting of the measured voltages, and wherein the controller unit is configured to generate a compensating signal based on the fitting and transmit the compensating signal to the digital signal processor, the digital signal processor is then configured to minimize variation in the acoustical signal at the output of the amplifier by compensating the variation in gain of the amplifier based on the compensating signal.

In embodiments of the invention, the present invention is directed to a contact hearing system including: a transmit coil positioned in an ear tip wherein the transmit coil includes an electrical coil wound on a ferrite core; a receive coil positioned on a contact hearing device wherein the receive coil includes an electrical coil without a core; a load connected to the receive coil; and a demodulation circuit connected to the receive coil and the load wherein the demodulation circuit includes a voltage doubler and a peak detector.

A bone conduction audio apparatus includes at least one ear hook assembly. A main circuit board is provided in the ear hook assembly. Each ear hook assembly includes an operating unit, a line concentrator and a bone conduction transducer. Each operating unit is electrically connected with corresponding line concentrator by contact springs or connecting wires, and connected with the main circuit board via the line concentrator. Each bone conduction transducer is electrically connected with the main circuit board via corresponding line concentrator. A controller of the main circuit board receives touch signals from all operating units to determine and initiate relating earphone operating. The bone conduction audio apparatus adopts bilateral triggering interaction mechanism. The line concentrator is combined with the suspended bone conduction transducer.

The disclosure generally relates to a method, system and apparatus to improve a user's understanding of speech in real-time conversations by processing the audio through a neural network contained in a hearing device. The hearing device may be a headphone or hearing aid. In one embodiment, the disclosure relates to an apparatus to enhance incoming audio signal. The apparatus includes a controller to receive an incoming signal and provide a controller output signal; a neural network engine (NNE) circuitry in communication with the controller, the NNE circuitry activatable by the controller, the NNE circuitry configured to generate an NNE output signal from the controller output signal; and a digital signal processing (DSP) circuitry to receive one or more of controller output signal or the NNE circuitry output signal to thereby generate a processed signal; wherein the controller determines a processing path of the controller output signal through one of the DSP or the NNE circuitries as a function of one or more of predefined parameters, incoming signal characteristics and NNE circuitry feedback.

In one embodiment, the present invention is directed to a method of transmitting information from an ear tip to a contact hearing device, the method comprising the steps of: exciting a transmit coil, the transmit coil being positioned in the ear tip, wherein the transmit coil is wound on a core, the core including a ferromagnetic material; radiating an electromagnetic field from the first coil through the ear canal of a user; receiving the radiated electromagnetic field at a receive coil, the receive coil being positioned on a contact hearing device, the contact hearing device including a receive coil without a ferrite core; and transmitting the information from the transmit coil to the receive coil using, for example, near-field radiation.