Hearing aid comprising a physiological sensor

    公开(公告)号:US12219324B2

    公开(公告)日:2025-02-04

    申请号:US18458585

    申请日:2023-08-30

    Applicant: Oticon A/S

    Abstract: The present application relates to a system comprising a hearing aid, the hearing aid configured to be operated based on an estimation of a current listening effort of a hearing aid user. The system comprising an input unit for receiving an input sound signal from an environment of the hearing aid user and providing at least one electric input signal representing said input sound signal, an output unit for providing at least one set of stimuli perceivable as sound to the hearing aid user based on processed versions of said at least one electric input signal, a signal-to-noise ratio (SNR) estimator for determining an SNR in the environment of the hearing aid user, a processing unit connected to said input unit and to said output unit and comprising signal processing parameters of the system to provide processed versions of said at least one electric input signal, a memory unit configured to store reference sets of SNR and pulse transition time (PTT) of the hearing aid user, at least a first and a second physiological sensor, wherein the system being configured to determine, based on the first physiological sensor, a first point in time at a first maximum upslope point of a first measured parameter, determine, based on the second physiological sensor, a second point in time at a second maximum upslope point of a second measured parameter, establish a current PTT by calculating a time difference between the first point in time and the second point in time, and determine, based on the current PTT and the stored reference sets of SNR and PTT, a current listening effort of the hearing aid user.

    Hearing aid with transmission power adaptation

    公开(公告)号:US12212931B2

    公开(公告)日:2025-01-28

    申请号:US18460133

    申请日:2023-09-01

    Applicant: Oticon A/S

    Abstract: The present disclosure relates to a hearing aid having at least two wireless interfaces, where the operation of one wireless risk introducing noise into the at least second wireless interface. The first wireless interface being configured so that it does not, or at least to a limited degree, introduce noise into the second wireless interface.

    Hearing device comprising an adaptive filter bank

    公开(公告)号:US12205611B2

    公开(公告)日:2025-01-21

    申请号:US17841002

    申请日:2022-06-15

    Applicant: Oticon A/S

    Abstract: A hearing device comprises a) at least one input transducer configured to pick up sound from an acoustic environment around the user when the user is wearing the hearing device, the at least one input transducer providing at least one electric input signal representative of said sound, b) at least one analysis filter bank configured to provide said at least one electric input signal as a multitude of frequency sub-band signals, the at least one analysis filter bank comprising b1) a plurality of M first filters hm(n), whose impulse responses are modulated from a first prototype filter h(n), where m=0, 1, . . . , M−1 is a frequency band index, and n is a time index, c) a processor for processing said at least one electric input signal provided by said at least one analysis filter bank, or a signal originating therefrom, and providing a processed signal, d) an output transducer configured to provide stimuli perceivable as sound to the user in dependence of said processed signal, and e) a controller for controlling said analysis filter bank by applying a different first prototype filter to said at least one filter bank in dependence of said current acoustic environment. A method of operating a hearing device is further disclosed.

    HEARING AID COMPRISING AN ACTIVE NOISE CANCELLATION SYSTEM

    公开(公告)号:US20240430625A1

    公开(公告)日:2024-12-26

    申请号:US18339255

    申请日:2023-06-22

    Applicant: Oticon A/S

    Inventor: Meng GUO

    Abstract: Disclosed herein are embodiments of a hearing aid configured to be worn at an ear having an active noise cancellation system configured to cancel or reduce directly propagated sound from said environment to said eardrum of the user. The active noise cancellation system can include an adaptive filter configured to provide a feedforward cancellation signal to compensate the directly propagated sound of an acoustic propagation path from said first input transducer to said second input transducer. Methods of operating a hearing aid are further disclosed.

    Hearing device comprising an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier

    公开(公告)号:US12155998B2

    公开(公告)日:2024-11-26

    申请号:US18316477

    申请日:2023-05-12

    Applicant: Oticon A/S

    Abstract: 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.

    Hearing device comprising a noise reduction system

    公开(公告)号:US12149882B2

    公开(公告)日:2024-11-19

    申请号:US18507930

    申请日:2023-11-13

    Applicant: Oticon A/S

    Abstract: A hearing device adapted for being located at or in an ear of a user, or for being fully or partially implanted in the head of a user comprises a) an input unit for providing at least one electric input signal representing sound in an environment of the user, said electric input signal comprising a target speech signal from a target sound source and additional signal components, termed noise signal components, from one or more other sound sources, b) a noise reduction system for providing an estimate of said target speech signal, wherein said noise signal components are at least partially attenuated, and c) an own voice detector for repeatedly estimating whether or not, or with what probability, said at least one electric input signal, or a signal derived therefrom, comprises speech originating from the voice of the user. The noise signal components are identified during time segments wherein the own voice detector indicates that the at least one electric input signal, or a signal derived therefrom, originates from the voice of the user, or originates from the voice of the user with a probability above an own voice presence probability (OVPP) threshold value. A method of operating a hearing device is further disclosed.

    HEARING DEVICE HAVING A POWER SOURCE

    公开(公告)号:US20240381040A1

    公开(公告)日:2024-11-14

    申请号:US18781080

    申请日:2024-07-23

    Applicant: Oticon A/S

    Abstract: A hearing aid includes: a power source; and a switched capacitor DC-DC converter electrically connected to the power source and having an input part configured for receiving charge from the power source at an input voltage of an input voltage range; an output part having multiple output ports, the output part being configured for supplying charge to the multiple output ports for providing multiple predefined output voltages; at least one flying capacitor configured for redistributing charge from the power source to the multiple output ports and/or in between the output ports; and a switching circuitry having a plurality of switches configured for electrically switching the switched capacitor DC-DC converter based on a switching scheme so as to provide the multiple predefined output voltages based on the input voltage.

    HEARING SYSTEM COMPRISING A DATABASE OF ACOUSTIC TRANSFER FUNCTIONS

    公开(公告)号:US20240357296A1

    公开(公告)日:2024-10-24

    申请号:US18759161

    申请日:2024-06-28

    Applicant: Oticon A/S

    Abstract: A hearing system comprises a) a multitude of M of microphones providing M corresponding electric input signals xm(n), m=1, . . . , M, and n representing time, b) a processor connected to said multitude of microphones and providing a processed signal in dependence thereof, c) an output unit for providing an output signal in dependence of said processed signal, and d) a database (Θ) comprising a dictionary (Δpd) of previously determined acoustic transfer function vectors (ATFpd). The processor is configured A) to determine a constrained estimate of a current acoustic transfer function vector (ATFpd,cur) in dependence of said M electric input signals and said dictionary (Δpd), B) to determine an unconstrained estimate of a current acoustic transfer function vector (ATFuc,cur) in dependence of said M electric input signals, and C) to determine a resulting acoustic transfer function vector (ATF*) for a user of the hearing system in dependence thereof and of a confidence measure related to said electric input signals. A method of operating a hearing device is also disclosed. Thereby an improved noise reduction system for a hearing aid or headset may be provided.

    Hearing aid configured to select a reference microphone

    公开(公告)号:US12108215B2

    公开(公告)日:2024-10-01

    申请号:US18347690

    申请日:2023-07-06

    Applicant: Oticon A/S

    Abstract: A hearing aid adapted for being worn by a user comprises at least two microphones, providing respective at least two electric input signals representing sound; a filter bank converting the at least two electric input signals into signals as a function of time and frequency; a directional system connected to said at least two microphones and being configured to provide a filtered signal in dependence of said at least two electric input signals and fixed or adaptively updated beamformer weights. At least one direction to a target sound source is defined as a target direction. For each frequency band, one of said at least two microphones is selected as a reference microphone, thereby providing a reference input signal for each frequency band. The reference microphone for a given frequency band may be selected in dependence of directional data related to directional characteristics of the at least two microphones.

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