公开(公告)号：US20220174428A1

公开(公告)日：2022-06-02

申请号：US17522275

申请日：2021-11-09

Applicant: Oticon A/S

Inventor： Poul HOANG ,  Jan M. DE HAAN ,  Michael Syskind PEDERSEN ,  Jesper JENSEN

IPC: H04R25/00 ,  G06N20/00

Abstract: A hearing aid system comprises a hearing aid configured to be worn on the head at or in an ear of a user. The hearing aid comprises a microphone system comprising a multitude of M of microphones arranged in said hearing aid and adapted to provide M corresponding electric input signals xm(n), m=1, . . . , M, n representing time. The environment sound at a given microphone comprises a mixture of a) a target sound signal sm(n) propagated via an acoustic propagation channel from a direction to or a location (θ) of a target sound source to the mth microphone of the hearing aid when worn by the user, and b) possible additive noise signals vm(n) as present at the location of the mth microphone, wherein the acoustic propagation channel is modeled as xm(n)=sm(n)hm(θ)+vm(n), and wherein hm(θ) is an acoustic impulse response for sound for that acoustic propagation channel. The hearing aid system comprises A) a processor connected to said number of microphones, and B) a database Θ comprising a multitude of dictionaries Δp, p=1, . . . , P, where p is a person index, of vectors, termed ATF-vectors, whose elements ATFm, m=1, . . . , M, are frequency dependent acoustic transfer functions representing direction- or location-dependent (θ), and frequency dependent (k) propagation of sound from a direction or location (θ) of a target sound source to each of said M microphones, k being a frequency index, k=1, . . . , K, where K is a number of frequency bands, when said microphone system is mounted on a head at or in an ear of a natural or artificial person (p′), and wherein each of said dictionaries Δp comprises ATF-vectors for a given person (p) for a multitude of different directions or locations θj, j=1, . . . , J, relative to the microphone system. The processor is configured to, at least in a learning mode of operation, determine personalized ATF-vectors (ATF*) for said user based on said multitude of dictionaries Δp of said database Θ, said electric input signals xm(n), m=1, . . . , M, and said model of the acoustic propagation channels. The invention may e.g. be used in beamforming, own voice estimation, own voice detection, keyword detection, etc.

公开(公告)号：US20210392443A1

公开(公告)日：2021-12-16

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

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 said hearing device and said external audio transmitters, at least from said external audio transmitters to said 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 said 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 said electric input signals or said beamformed signal from the hearing device and said 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 said source selection control signal in dependence of a comparison of said beamformed signal and said 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：US20210168518A1

公开(公告)日：2021-06-03

申请号：US17109329

申请日：2020-12-02

Applicant: Oticon A/S

Inventor： Jesper JENSEN ,  Nels Hede ROHDE ,  Thomas BENTSEN ,  Michael Syskind PEDERSEN ,  Svend Oscar PETERSEN

IPC: H04R25/00 ,  G10L25/84 ,  G10L25/60 ,  G06N3/08 ,  G06N3/04

Abstract: A hearing system configured to be located at or in the head of a user, comprises a) at least two microphones providing at least two electric input signals, b) an own voice detector, c) access to a database (Ol, Hl) comprising c1) relative or absolute own voice transfer function(s), and corresponding c2) absolute or relative acoustic transfer functions for a multitude of test-persons, d) a processor connectable to the at least two microphones, to the own voice detector, and to the database. The processor is configured A) to estimate an own voice relative transfer function for sound from the user's mouth to at least one of the at least two microphones, and B) to estimate personalized relative or absolute head related acoustic transfer functions from at least one spatial location other than the user's mouth to at least one of the microphones of the hearing system in dependence of the estimated own voice relative transfer function(s) and the database (Ol, Hl). The hearing system further comprises e) a beamformer configured to receive the at least two electric input signals, or processed versions thereof, and to determine personalized beamformer weights based on the personalized relative or absolute head related acoustic transfer functions or impulse responses. A method of determining personalized beamformer coefficients (wk) is further disclosed.

公开(公告)号：US20200322736A1

公开(公告)日：2020-10-08

申请号：US16909390

申请日：2020-06-23

Applicant: Oticon A/S

Inventor： Svend Oscar PETERSEN ,  Michael Syskind PEDERSEN ,  Anders THULE

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, configured to be worn by a user, comprises a) two or more input transducers (e.g. microphones) wherein said two or more input transducers during use of the hearing device are arranged with a distance between them; b) a directional system comprising a directional algorithm configured to provide a directional pattern in dependence of said distance. The hearing device is configured to estimate a current value of said distance, or an equivalent acoustic delay, or beamformer weights of said directional system, thereby the directional performance can be optimized to the individual user.

公开(公告)号：US20200221236A1

公开(公告)日：2020-07-09

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：US20190394586A1

公开(公告)日：2019-12-26

申请号：US16448711

申请日：2019-06-21

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Angela JOSUPEIT ,  Sigurdur SIGURDSSON ,  Anders Vinther OLSEN ,  Nels Hede ROHDE

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, comprises an input unit; an output unit; an adaptive beamformer filtering unit configured to provide a spatially filtered signal based on a multitude of electric input signals from the input unit and an adaptively updated adaptation factor β; a memory, wherein A) a reference value REF, equal to or dependent on a value, βov, of said adaptation factor β determined when a voice of the user is present, or B) a set of parameters for classification based on logistic regression or a neural network, is stored; and an own voice detector configured to provide an estimate of whether or not, or with what probability, a given input sound originates from the voice of the user, and wherein said estimate is dependent on a) a current value of said adaptation factor β and said reference value REF, or on b) said set of parameters for classification based on logistic regression or a neural network, respectively.

公开(公告)号：US20190182607A1

公开(公告)日：2019-06-13

申请号：US16218172

申请日：2018-12-12

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Jesper JENSEN

IPC: H04R25/00

Abstract: The application relates to a hearing device, e.g. a hearing aid, adapted for being located at or in an ear of a user, or for being fully or partially implanted in the head of the user. The application further relates to a method of operating a hearing device. The hearing device comprises a) an input unit for providing at least one electric input signal in a frequency sub-band representation comprising a number K of frequency bands, b) a frequency band to channel allocation unit for allocating said K frequency bands to a number N of frequency channels for each of said electric input signals, wherein K>N; c) antenna and transceiver circuitry allowing reception of at least one further electric signal in said N frequency channels from another device, e.g. another hearing device, d) a first beamformer filtering unit for providing at least one channel beamformer based on said at least one electric input signal and said at least one further electric signal received from said other device, in said N frequency channels. The hearing device may further comprise a level to gain transformation unit for receiving said at least one channel beamformer and providing a post filter gain for each frequency channel in dependence thereof. The invention may e.g. be used in binaural hearing aid systems.

公开(公告)号：US20190158965A1

公开(公告)日：2019-05-23

申请号：US16256742

申请日：2019-01-24

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Jan Mark DE HAAN ,  Jesper JENSEN

IPC: H04R25/00 ,  H04R3/00 ,  G10L21/0208

Abstract: A hearing aid comprises a resulting beam former (Y) for providing a resulting beamformed signal YBF based on first and second electric input signals IN1 and IN2, first and second sets of complex frequency dependent weighting parameters W11(k), W12(k) and W21(k), W22(k), and a resulting complex, frequency dependent adaptation parameter β(k). β(k) may be determined as / +c), where * denotes the complex conjugation and (·) denotes the statistical expectation operator, and c is a constant, and wherein said adaptive beam former filtering unit (BFU) comprises a smoothing unit for implementing said statistical expectation operator by smoothing the complex expression C2*·C1 and the real expression |C2|2 over time. Alternatively, β(k) may be determined from the following expression β = w C   1 H  C v  w C   2 w C   2 H  C v  w C   2 , where wC1 and wC2 are the beamformer weights representing the first (C1) and the second (C2) beamformers, respectively, Cv is a noise covariance matrix, and H denotes Hermitian transposition. Corresponding methods of operating a hearing aid, and a hearing aid utilizing smoothing β(k) based on adaptive covariance smoothing are disclosed.

公开(公告)号：US20180233160A9

公开(公告)日：2018-08-16

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: G10L21/0232 ,  H04R25/00 ,  H04R1/10 ,  A61F11/06 ,  H04B1/3827 ,  H04M1/60

CPC classification number: G10L21/0232 ,  A61F11/06 ,  G10L21/0216 ,  G10L21/0264 ,  H04B1/3833 ,  H04M1/6041 ,  H04R1/1083 ,  H04R25/50 ,  H04R25/505 ,  H04R25/558 ,  H04R2225/43

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.(Fig. 1A should be published)

公开(公告)号：US20170142527A1

公开(公告)日：2017-05-18

申请号：US15420268

申请日：2017-01-31

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Kenneth Rueskov MØLLER ,  Svend Oscar PETERSEN ,  Niels Stubager KIEMER ,  Jesper Kofoed NIELSEN ,  Björn OHL ,  Marianne Kleist ELMLUND ,  Karin CARVALHO ,  Henrik BENDSEN ,  Regin Kopp PEDERSEN ,  Christian C. BÜRGER ,  Steen Michael MUNK ,  Morten CHRISTOPHERSEN ,  Julie Hefting PEDERSEN ,  Bo WESTERGÅRD ,  Maria OXENBØLL

IPC: H04R25/00

CPC classification number: H04R25/305 ,  G01C9/00 ,  H04R1/1041 ,  H04R1/406 ,  H04R25/407 ,  H04R25/453 ,  H04R25/505 ,  H04R25/65 ,  H04R2225/31 ,  H04R2225/41 ,  H04R2225/55 ,  H04R2225/63 ,  H04R2430/20 ,  H04R2460/03

Abstract: A hearing aid device is disclosed. The hearing aid device comprises means to improve, augment and/or protect the hearing capability of a user by receiving acoustic signals from the surroundings of the user, generating corresponding audio signals, possibly modifying the audio signals and providing the possibly modified audio signals as audible signals to at least one of the user's ears. The hearing aid device comprises a sensor member for detecting the movement and/or acceleration and/or orientation (or spatial position) of the hearing aid device. The hearing aid device comprises at least two hearing aid microphones and a control unit for determining the position or a deviation from an intended position of the hearing aid device or hearing aid microphones. The hearing aid device is configured to compensate for a possible dislocation of the hearing aid microphones.