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    Hearing device comprising an input transducer in the ear
    101.
    发明授权
    Hearing device comprising an input transducer in the ear 有权

    公开(公告)号：US11843917B2

    公开(公告)日：2023-12-12

    申请号：US17731700

    申请日：2022-04-28

    Applicant: Oticon A/S

    Inventor： Thomas Behrens ,  Michael Syskind Pedersen ,  Meng Guo

    IPC: H04R25/00

    CPC classification number: H04R25/407 ,  H04R25/453

    Abstract: A hearing aid configured to be worn at, and/or in, an ear of a user, comprises a forward path for processing sound from the environment of the user. The forward path comprises a) at least one first microphone providing at least one first electric input signal representing said sound as received at the respective at least one first microphones, said at least one first microphone being located away from a first ear canal of the user, b) an audio signal processor for processing said at least one first electric input signal, or a signal or signals originating therefrom, and for providing a processed signal, c) an output transducer for providing stimuli perceivable as sound to the user in dependence of said processed signal, and d) at least one second microphone connected to said audio signal processor, the at least one second microphone being configured to provide at least one second electric input signal representing said sound as received at the at least one second microphone, the at least one second microphone being located at or in said first ear canal of the user, and e) a feature extractor for extracting acoustic characteristics of said ear of the user from said at least one second electric input signal, or a signal originating therefrom. The hearing aid is configured to include said acoustic characteristics in the processed signal. The invention may e.g. provide improved sound localization in hearing aids.

    Hearing device comprising a recurrent neural network and a method of processing an audio signal
    104.
    发明授权
    Hearing device comprising a recurrent neural network and a method of processing an audio signal 有权

    公开(公告)号：US11696079B2

    公开(公告)日：2023-07-04

    申请号：US17580493

    申请日：2022-01-20

    Applicant: Oticon A/S

    Inventor： Zuzana Jel{hacek over (c)}icová ,  Rasmus Jones ,  David Thorn Blix ,  Michael Syskind Pedersen ,  Jesper Jensen ,  Asger Heidemann Andersen

    IPC: H04R25/00

    CPC classification number: H04R25/453 ,  H04R25/405

    Abstract: A hearing device, e.g. a hearing aid or a headset, configured to be worn by a comprises an input unit for providing at least one electric input signal in a time-frequency representation; and a signal processor comprising a target signal estimator for providing an estimate of the target signal; a noise estimator for providing an estimate of the noise; and a gain estimator for providing respective gain values in dependence of said target signal estimate and said noise estimate. The gain estimator comprises a trained neural network, wherein the outputs of the neural network comprise real or complex valued gains, or separate real valued gains and real valued phases. The signal processor is configured—at a given time instance t—to calculate changes Δx(i,t)=x(i,t)−{circumflex over (x)}(i,t−1), and Δh(j,t−1)=h(j,t−1)−ĥ(j,t−2) to an input vector x(t) and to the hidden state vector h(t−1), respectively, from one time instance, t−1, to the next, t, and where {circumflex over (x)}(i,t−1) and ĥ(j,t−2) are estimated values of x(i,t−1) and h(j,t−2), respectively, where indices i, j refers to the ith input neuron and the jth neuron of the hidden state, respectively, where 1≤i≤Nch,x and 1≤j≤Nch,oh, wherein Nch,x and Nch,oh is the number of processing channels of the input vector x and the hidden state vector h, respectively, and wherein the signal processor is further configured to provide that the number of updated channels among said Nch,x and said Nch,oh processing channels of the modified gated recurrent unit for said input vector x(t) and said hidden state vector h(t−1), respectively, at said given time instance t is limited to a number of peak values Np,x, and Np,oh, respectively, where Np,x is smaller than Nch,x, and Np,oh, is smaller than Nch,oh.

    Hearing device or system for evaluating and selecting an external audio source
    105.
    发明授权
    Hearing device or system for evaluating and selecting an external audio source 有权

    公开(公告)号：US11689867B2

    公开(公告)日：2023-06-27

    申请号：US17459518

    申请日：2021-08-27

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Jesper Jensen

    IPC: H04R25/00 ,  H04R25/02

    CPC classification number: H04R25/407 ,  H04R25/02 ,  H04R25/552 ,  H04R25/554 ,  H04R2430/23

    Abstract: A hearing system comprises a) at least one hearing device adapted for being worn on the head, or fully or partially implanted in the head, of a user, and b) a multitude of external, spatially separated, audio transmitters, each providing respective external electric sound signals comprising audio. The hearing system is configured to allow wireless communication, including audio communication, between the hearing device and the external audio transmitters, at least from the external audio transmitters to the at least one hearing device, to be established. The at least one hearing device comprises A) a multitude of microphones, each providing an electric input signal representative of sound; B) a beamformer filter providing a beamformed signal from the multitude of electric input signals; and C) an output unit configured to provide stimuli perceivable by the user as sound. The hearing system further comprises c) a selector/mixer for selecting and possibly mixing one or more of the electric input signals or the beamformed signal from the hearing device and the external electric signals from the audio transmitters and to provide a current input sound signal based thereon intended for being presented to the user, possibly in a further processed form. The selector/mixer is controlled by a source selection control signal provided by a source selection processor. The source selection processor is configured to determine the source selection control signal in dependence of a comparison of the beamformed signal and the external electric sound signals or processed versions thereof. A hearing device, and a method of operating a hearing system is further disclosed. The invention may e.g. be used in hearing aids, headsets, active ear protection devices, headphones, etc.

    Hearing device comprising direct sound compensation
    107.
    发明授权
    Hearing device comprising direct sound compensation 有权

    公开(公告)号：US11109166B2

    公开(公告)日：2021-08-31

    申请号：US16737624

    申请日：2020-01-08

    Applicant: Oticon A/S

    Inventor： Jesper Jensen ,  Peter Sommer ,  Svend Oscar Petersen ,  Karsten Bo Rasmussen ,  Jan M. De Haan ,  Michael Syskind Pedersen

    IPC: H04R25/00

    Abstract: A hearing device, e.g. a hearing aid, configured to play sound into an ear canal of a user, the hearing device comprising at least one input transducer (ITq) for picking up sound sq at said at least one input transducer from a sound field S around the hearing device and providing corresponding at least one electric input signal(s) INq representing said sound sq, i=1, . . . , Q, where Q≥1; an analogue to digital converter for converting said at least one electric input signal(s) to a digitized signal represented by discrete samples sq(p), where p is a time sample index, a processor for processing said at least one electric input signal sq(p) to a processed signal; an output transducer (OT) for converting an electric signal including said processed signal to an acoustic signal s″; a forward signal path of the hearing device being defined from an acoustic input to said at least one input transducer to an acoustic output of said output transducer having a forward signal propagation delay τHI of the hearing device, the hearing device further comprises a compensation unit for at least partially cancelling directly propagated sound from said sound field S that is propagated to the ear canal via a direct acoustic propagation path, wherein the compensation unit is configured to predict said directly propagated sound and to play it in opposite phase of said directly propagated sound. A method of operating a hearing device is further disclosed.

    Audio processing device and a method for estimating a signal-to-noise-ratio of a sound signal
    108.
    发明授权
    Audio processing device and a method for estimating a signal-to-noise-ratio of a sound signal 有权

    公开(公告)号：US10861478B2

    公开(公告)日：2020-12-08

    申请号：US16546928

    申请日：2019-08-21

    Applicant: Oticon A/S

    Inventor： Jesper Jensen ,  Andreas Thelander Bertelsen ,  Michael Syskind Pedersen

    IPC: G10L15/20 ,  G10L21/0208 ,  G10L19/26

    Abstract: An audio processing device comprises a) at least one input unit for providing a time-frequency representation Y(k,n) of an electric input signal representing sound consisting of target speech and noise signal components, where k and n are frequency band and time frame indices, respectively, b) a noise reduction system configured to b1) determine a first signal to noise ratio estimate γ(k,n) of said electric input signal, and to b2) determine a second signal to noise signal ratio estimate ζ(k,n) of said electric input signal from said first signal to noise ratio estimate γ(k,n) based on a recursive algorithm providing non-linear smoothing, and wherein a determination of said one or more bias and/or smoothing parameters comprises the use of supervised learning, e.g. one or more neural networks. The invention may be used in audio processing devices, such as hearing aids, headsets, ear phones, active ear protection systems, handsfree telephone systems, mobile telephones, etc.

    Hearing aid comprising a directional microphone system
    109.
    发明授权
    Hearing aid comprising a directional microphone system 有权

    公开(公告)号：US10587962B2

    公开(公告)日：2020-03-10

    申请号：US16362056

    申请日：2019-03-22

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Andreas Thelander Bertelsen

    IPC: H04R25/00

    Abstract: A hearing aid comprises a BTE-part adapted for being located behind an ear (ear) of a user, and comprising a) a multitude M of microphones, which—when located behind the ear of the user—are characterized by respective transfer functions, HBTEi(θ, φ, r, k), representative of propagation of sound from sound sources S to the respective microphones b) a memory unit comprising complex, frequency dependent constants Wi(k)′, i=1, . . . , M, c) a beamformer filtering unit for providing a beamformed signal Y as a weighted combination of the microphone signals using said complex, frequency dependent constants The frequency dependent constants are determined to provide a resulting transfer function Hpinna(θ, φ, r, k)=Σi=1MWi(k)·HBTEi(θ, φ, r, k), so that a difference between the resulting transfer function Hpinna(θ, φ, r, k) and a transfer function HITE(θ, φ, r, k) of a microphone located close to or in the ear canal fulfils a predefined criterion.

    Hearing device comprising a wireless receiver of sound
    110.
    发明授权
    Hearing device comprising a wireless receiver of sound 有权

    公开(公告)号：US10582314B2

    公开(公告)日：2020-03-03

    申请号：US15915322

    申请日：2018-03-08

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Jesper Jensen ,  Svend Oscar Petersen ,  Anders Thule

    IPC: H04R25/00

    Abstract: A hearing device, e.g. a hearing aid, adapted for being located at or in an ear of a user and/or for being fully or partially implanted in the head of the user, comprises A multitude of input units each providing an electric input signal representing a mixture of an audio signal from an audio signal source and possibly acoustic signals from other acoustic signal sources around the hearing device as received at the input unit in question; A wireless receiver for receiving and providing a direct representation of the audio signal; A beamformer filtering unit configured to receive said multitude of electric input signals, and providing a beamformed signal; A combination unit for providing a mixed signal comprising a combination of said direct representation of the audio signal and said beamformed signal, or signals originating therefrom; An output unit for presenting stimuli perceivable to the user as sound based on said mixed signal. The beamformer filtering unit comprises an audio signal cancelling beamformer configured to provide that sound from the direction from the hearing device to the audio signal source is cancelled or attenuated compared to other directions in said beamformed signal. The application further relates to a method of operating a hearing device.

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