公开(公告)号：US20220256295A1

公开(公告)日：2022-08-11

申请号：US17667293

申请日：2022-02-08

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jesper Jensen ,  Christian Asp Mogensen

IPC: H04R25/00

Abstract: A hearing aid includes at least two microphones, providing respective at least two electric input signals representing sound around the user; a filter bank converting the electric input signals into signals as a function of time and frequency; a directional system connected to the microphones and being configured to provide a filtered signal in dependence of the 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 the microphones is selected as a reference microphone, thereby providing a reference input signal for each frequency band. The reference microphone may be selected in dependence of directional data related to directional characteristics of the microphones. The reference microphone may be different for at least two frequency bands. The reference microphone may be adaptively selected based on a logic criterion.

公开(公告)号：US11330366B2

公开(公告)日：2022-05-10

申请号：US16855232

申请日：2020-04-22

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Carsten Scheel ,  Martin Bergmann ,  Henrik Bay ,  Morten Pedersen ,  Bent Krogsgaard ,  Jacob Mikkelsen ,  Stefan Gram ,  Jan M. De Haan ,  Andreas Thelander Bertelsen

IPC: H04R25/00 ,  H04R1/40

Abstract: A sound capture device configured to be worn by a person and/or to be located on a surface is configured to pick up target sound from a target sound source s. The sound capture device comprises a) an input unit providing a multitude of electric input signals, each comprising a target signal component and a noise signal component; b) a directional noise reduction system comprising a beamformer unit coupled to said multitude of input signals and configured to provide an estimate of the target sound s. The beamformer unit comprises b1) target maintaining, reference beamformer providing a current reference signal; and b2) a target cancelling beamformer providing a current target cancelling sign. The directional noise reduction system is configured to operate in at least two modes in dependence of a mode control signal, 1) in a directional mode and 2) in a non-directional, omni-directional mode. The sound capture device further comprises c) antenna and transceiver circuitry for establishing an audio link to another device, and to transmit said estimate of the target sound s to said another device, and d) a mode controller for determining said mode control signal in dependence of said current reference signal and said current target cancelling signal. A method of operating a sound capture device is further disclosed.

公开(公告)号：US11245993B2

公开(公告)日：2022-02-08

申请号：US16785167

申请日：2020-02-07

Applicant: Oticon A/S

Inventor： Asger Heidemann Andersen ,  Jesper Jensen ,  Michael Syskind Pedersen ,  Nels Hede Rohde ,  Anders Brødløs Olsen ,  Michael Smed Kristensen ,  Thomas Bentsen ,  Andreas Thelander Bertelsen

IPC: G06N3/08 ,  G10L25/51 ,  H04R25/00

Abstract: A hearing device, e.g. a hearing aid, is configured to be worn by a user at or in an ear or to be fully or partially implanted in the head at an ear of the user. The hearing device comprises a) an input unit for providing at least one electric input signal in a time frequency representation k, m, where k and m are frequency and time indices, respectively, and k represents a frequency channel, the at least one electric input signal being representative of sound and comprising target signal components and noise components; and b) a signal processor comprising b1) an SNR estimator for providing a target signal-to-noise ratio estimate for said at least one electric input signal in said time frequency representation; and b2) an SNR-to-gain converter for converting said target signal-to-noise ratio estimate to respective gain values in said time frequency representation. The signal processor comprises a neural network, wherein the weights of the neural network have been trained with a plurality of training signals. A method of operating a hearing aid is further disclosed. The invention may e.g. be used in audio devices, such as hearing aids, headsets, mobile telephones, etc., operating in noisy acoustic environments.

公开(公告)号：US10932066B2

公开(公告)日：2021-02-23

申请号：US16271557

申请日：2019-02-08

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Svend Oscar Petersen ,  Meng Guo ,  Karsten Bo Rasmussen ,  Troels Holm Pedersen ,  Kenneth Rueskov Møller

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, comprises a) a multitude of input transducers for providing respective electric input signals representing sound in an environment of the user; b) an output transducer for providing stimuli perceivable to the user as sound based on said electric input signals or a processed version thereof; c) an adaptive beamformer filtering unit connected to said input unit and to said output unit, and configured to provide a spatially filtered signal based on said multitude of electric input signals and adaptively updated beamformer weights; and d) a feedback estimation unit providing feedback estimates of current feedback paths from said output transducer to each of said input transducers. The hearing device is configured to provide that at least one of said adaptively updated beamformer weights of the adaptive beamformer filtering unit is/are updated in dependence of said feedback path estimates. The application further relates to a method of suppressing feedback.

公开(公告)号：US10820119B2

公开(公告)日：2020-10-27

申请号：US16449729

申请日：2019-06-24

Applicant: Oticon A/S

Inventor： Svend Oscar Petersen ,  Michael Syskind Pedersen ,  Karsten Bo Rasmussen

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, comprises a) an input unit comprising a multitude of input transducers for providing respective electric input signals representing sound in an environment of the user; b) an output unit comprising an output transducer for providing stimuli perceivable to the user as sound based on said electric input signals or a processed version thereof; c) a spatial filter connected to said input unit and to said output unit, and configured to provide a spatially filtered signal based on said multitude of electric input signals and configurable beamformer weights; d) a spatial filter controller configured to apply first and/or second different sets of beamformer weights to said multitude of electric input signals, wherein said first set of beamformer weights is applied to provide spatial filtering of sound from said output transducer, and wherein said second set of beamformer weights is applied to provide spatial filtering of an external sound field. A method of operating a hearing device is further disclosed.

公开(公告)号：US10743121B2

公开(公告)日：2020-08-11

申请号：US16504060

申请日：2019-07-05

Applicant: Oticon A/S

Inventor： Niels Henrik Pontoppidan ,  Thomas Lunner ,  Michael Syskind Pedersen ,  Lars Ivar Hauschultz ,  Povl Koch ,  Graham Naylor ,  Eline Borch Petersen

IPC: H04R25/00 ,  G06K9/00 ,  A61B5/0478 ,  A61B5/0484 ,  A61B5/12 ,  A61B5/00 ,  G06F3/01 ,  A61B5/16 ,  A61B5/048 ,  A61B5/0482

Abstract: The present disclosure relates to communication devices. Such devices may comprise input for receiving sound signal to be processed and presented to a user, and output for outputting the processed signal to a user perceivable as sound. Such processing may be performed by use of a processor for processing the sound signal in dependence of a setting or a set of setting to compensate a hearing loss profile. Further, the communication device may comprise a bio-signal acquisition and amplifier component in communication with a user interface for providing the bio-signals as input to the user interface, the user interface controlling the setting or set of setting for operation of the communication device.

公开(公告)号：US10659893B2

公开(公告)日：2020-05-19

申请号：US16131613

申请日：2018-09-14

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Povl Koch ,  David Thorn Blix ,  Matias Tofteby Bach

IPC: H04R25/00

Abstract: There is provided a system (100) comprising an audio streaming device (102) having an audio streaming device receiver (104) arranged for receiving a first audio signal (106) comprising a first audio content and a second audio signal (108) comprising a second audio content, the system furthermore comprising a memory device (110) arranged for storing a user defined setting (112), a processor (114) arranged for providing an output audio signal (116), said output audio signal comprising a combination of the first audio content, and the second audio content, wherein the output audio signal comprises a ratio of a level of the first audio content and a level of the second audio content, and the ratio is determined based on the user defined setting (112), and wherein the system is further comprising a system transmitter (118) arranged for wirelessly transmitting the output audio signal (116).

公开(公告)号：US10580437B2

公开(公告)日：2020-03-03

申请号：US15714260

申请日：2017-09-25

Applicant: Oticon A/S

Inventor： Jesper Jensen ,  Michael Syskind Pedersen

IPC: G10L25/78 ,  G10L25/84 ,  H04R3/00 ,  G10L25/21 ,  G10L25/90 ,  H04R25/00 ,  G10L21/0216

Abstract: A voice activity detection unit is configured to receive at least two electric input signals in a number of frequency bands and a number of time instances, k and m being frequency band and time indices, respectively, (k, m) defining a specific time-frequency tile of said electric input signal. The voice activity detection unit is configured to provide a resulting voice activity detection estimate comprising one or more parameters indicative of whether or not a given time-frequency tile contains or to what extent it comprises a target speech signal. The voice activity detection unit comprises a) a first detector for analyzing the time-frequency representation of the electric input signals and identifying spectro-spatial characteristics of said electric input signals, and b) and is configured for providing said resulting voice activity detection estimate in dependence of said spectro-spatial characteristics. The invention may be used in hearing aids, table microphones, speakerphones, etc.

公开(公告)号：US20190222942A1

公开(公告)日：2019-07-18

申请号：US16362056

申请日：2019-03-22

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Andreas Thelander Bertelsen

IPC: H04R25/00

CPC classification number: H04R25/407 ,  H04R25/405 ,  H04R25/505 ,  H04R25/558 ,  H04R25/70 ,  H04R2225/021 ,  H04R2225/025 ,  H04R2225/43

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.

公开(公告)号：US10171921B2

公开(公告)日：2019-01-01

申请号：US15257333

申请日：2016-09-06

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jan Thor Lunddahl Larsen

IPC: H04R25/00 ,  H04R29/00

Abstract: The invention relates to a method and an apparatus for performing a microphone matching of a hearing aid comprising a first microphone, a second microphone and a receiver in a predetermined spatial arrangement to each other. The method comprises the steps of: generating an output sound signal by means of the receiver; picking up a first and second input sound signal by the first and second microphones while the output sound signal is generated; converting the first and second input sound signals into a first and second electrical microphone output signal by means of the microphones; determining a first and second microphone response of the microphones; determining a microphone response difference between the first microphone response and the second microphone response; determining a matching difference between the microphone response difference and a predetermined reference microphone response difference; and adapting at least a first microphone gain of the first microphone according to the matching difference to reduce the matching difference.