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.

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.

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.

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.

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.

公开(公告)号：US10524063B2

公开(公告)日：2019-12-31

申请号：US16212417

申请日：2018-12-06

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jesper Jensen ,  Peter S. K. Hansen ,  Bjarne Kielsholm-Ribalaygua ,  Kåre Tais Christensen ,  Jens Troelsen ,  Hans Christian Schott ,  Rune Sø

IPC: H04R25/00

Abstract: A binaural aid assistance system comprises first and second hearing assistance devices, each being adapted for being located at or in, or fully or partially implanted in the head at one of a left and right ear, respectively, of a user, wherein each of the first and second hearing assistance devices comprisesa) a first wireless interface comprising first antenna and transceiver circuitry adapted for establishing a first communication link to the respective other hearing assistance device based on near-field communication;b) a second wireless interface comprising second antenna and transceiver circuitry adapted for establishing a second bi-directional communication link to an auxiliary device based on far-field communication; and wherein the hearing assistance system is configured to transmit an audio signal picked up by a microphone of the hearing assistance device(s) to said auxiliary device.

公开(公告)号：US10375486B2

公开(公告)日：2019-08-06

申请号：US16194082

申请日：2018-11-16

Applicant: Oticon A/S

Inventor： Andreas Thelander Bertelsen ,  Michael Syskind Pedersen ,  Jesper Jensen ,  Thomas Kaulberg ,  Morten Christophersen

IPC: H04R25/00 ,  G10L21/0232 ,  G10L21/0216

Abstract: A hearing aid comprises a) first and second microphones b) an adaptive beamformer filtering unit comprising, b1) a memory comprising a first and second sets of complex frequency dependent weighting parameters representing a first and second beam patterns, b3) an adaptive beamformer processing unit providing an adaptation parameter βopt(k) representing an adaptive beam pattern, b4) a memory comprising a fixed adaptation parameter βfix(k) representing a third, fixed beam pattern, b5) a mixing unit providing a resulting complex, frequency dependent adaptation parameter βmix(k) as a combination of said fixed and adaptively determined frequency dependent adaptation parameters βfix(k) and βopt(k), respectively, and b6) a resulting beamformer (Y) for providing a resulting beamformed signal YBF based on first and second microphone signals, said first and second sets of complex frequency dependent weighting parameters, and said resulting complex, frequency dependent adaptation parameter βmix(k).

公开(公告)号：US10269368B2

公开(公告)日：2019-04-23

申请号：US15608224

申请日：2017-05-30

Applicant: Oticon A/S

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

IPC: G10L15/20 ,  G10L21/0232 ,  H04R1/10 ,  G10L21/0264 ,  H04R25/00 ,  G10L21/0216 ,  A61F11/06 ,  H04B1/3827 ,  H04M1/60

Abstract: An audio processing device comprises a) at least one input unit for providing 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 detection and/or reduction system configured to b1) determine an a posteriori signal to noise ratio estimate γ(k,n) of said electric input signal, and to b2) determine an a priori target signal to noise signal ratio estimate ζ(k,n) of said electric input signal from said a posteriori signal to noise ratio estimate γ(k,n) based on a recursive decision directed algorithm. The application further relates to a method of of estimating an a priori signal to noise ratio. The invention may e.g. be used for the hearing aids, headsets, ear phones, active ear protection systems, handsfree telephone systems, mobile telephones, etc.

公开(公告)号：US10182300B2

公开(公告)日：2019-01-15

申请号：US15897865

申请日：2018-02-15

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jesper Jensen ,  Peter S. K. Hansen ,  Bjarne Kielsholm-Ribalaygua ,  Kåre Tais Christensen ,  Jens Troelsen ,  Hans Christian Schott ,  Rune Sø

IPC: H04R5/00 ,  H04R25/00

Abstract: A binaural aid assistance system comprises first and second hearing assistance devices adapted for being located at or in left and right ears of a user. Each of the first and second hearing assistance devices comprises a) a first wireless interface comprising first antenna and transceiver circuitry adapted for establishing a first communication link to the respective other hearing assistance device based on near-field communication; b) a second wireless interface comprising second antenna and transceiver circuitry adapted for establishing a second communication link to an auxiliary device based on far-field communication. The binaural hearing aid system further comprises c) a user interface from which a user can select a suitable routing of an audio signal from the auxiliary device to each of the first and second hearing assistance devices.

公开(公告)号：US10165373B2

公开(公告)日：2018-12-25

申请号：US15482188

申请日：2017-04-07

Applicant: Oticon A/S

Inventor： Andreas Thelander Bertelsen ,  Michael Syskind Pedersen ,  Jesper Jensen ,  Thomas Kaulberg ,  Morten Christophersen

IPC: H04R25/00 ,  G10L21/0232 ,  G10L21/0216

Abstract: A hearing aid comprises a) first and second microphones b) an adaptive beamformer filtering unit comprising, b1) a first and second memories comprising a first and second sets of complex frequency dependent weighting parameters representing a first and second beam patterns, where said first and second sets of weighting parameters are predetermined initial values or values updated during operation of the hearing aid, b3) an adaptive beamformer processing unit providing an adaptation parameter βopt(k) representing an adaptive beam pattern configured to attenuate unwanted noise under the constraint that sound from a target direction is essentially unaltered, b4) a third memory comprising a fixed adaptation parameter βfix(k) representing a third, fixed beam pattern, b5) a mixing unit providing a resulting complex, frequency dependent adaptation parameter βmix(k) as a combination of said fixed and adaptively determined frequency dependent adaptation parameters βfix(k) and βopt(k), respectively, and b6) a resulting beamformer (Y) for providing a resulting beamformed signal YBF based on first and second microphone signals, said first and second sets of complex frequency dependent weighting parameters, and said resulting complex, frequency dependent adaptation parameter βmix(k).