Binaural hearing assistance system comprising a database of head related transfer functions

    公开(公告)号:US09414171B2

    公开(公告)日:2016-08-09

    申请号:US14531415

    申请日:2014-11-03

    申请人: Oticon A/S

    IPC分类号: H04R5/00 H04R25/00

    摘要: The application relates to a binaural hearing assistance system comprising left and right hearing assistance devices adapted for being located at or in a left and right ear, respectively, of a user, each of the left and right hearing assistance devices comprising a) an input unit for providing one or more electric input signals based on one or more input sounds of a sound field surrounding the binaural hearing assistance system; b) a source separation unit for separating and localizing one or more sound sources Ss in said sound field relative to the input transducer unit based on said one or more electric input signals, and providing respective separated sound source signals Xs, and localization parameters LPs of said one or more sound sources (s=1, 2, . . . , Ns); c) an antenna and transceiver unit adapted for allowing an exchange of said electric input signals, and/or said separated sound source signals Xs and/or said localization parameters LPs of said one or more sound sources between said left and right hearing assistance devices. The application further relates to a method of operating a binaural hearing assistance system. The object of the present application is to provide an improved binaural hearing assistance system. The problem is solved in that the system further comprises d) a comparison and calculation unit for comparing said electric input signals, and/or said separated sound source signals Xsl, Xsr and/or said localization parameters LPsl, LPsr of said left and right hearing assistance devices, respectively, to estimate a head related transfer function HRTF value for one or more of said sound sources S with said localization parameters LPs at a given point in time; and e) a memory unit for storing and updating a database of said HRTF values and optionally said localization parameters LPs over time. This has the advantage of providing a flexible binaural hearing assistance system that is capable of learning the relevant HRTFs of its user, optionally without being initialized. The invention may e.g. be used in hearing aids, headsets, ear phones, active ear protection systems and combinations thereof.

    Hearing device comprising a low-latency sound source separation unit

    公开(公告)号:US10341785B2

    公开(公告)日:2019-07-02

    申请号:US14874641

    申请日:2015-10-05

    申请人: Oticon A/S

    摘要: The application relates to a hearing device comprising a) an input unit for delivering a time varying electric input signal representing an audio signal comprising at least two sound sources, b) a cyclic analysis buffer unit of length A adapted for storing the last A audio samples, c) a cyclic synthesis buffer unit of length, where L is smaller than A, adapted for storing the last L audio samples, which are intended to be separated in individual sound sources, d) a database having stored recorded sound examples from said at least two sound sources, each entry in the database being termed an atom, the atoms originating from audio samples from first and second buffers corresponding in size to said synthesis and analysis buffer units, where for each atom, the audio samples from the first buffer overlaps with the audio samples from the second buffer, and where atoms originating from the first buffer constitute a reconstruction dictionary, and where atoms originating from the second buffer constitute an analysis dictionary. The application further relates to a method of separating audio sources, and e) a sound source separation unit for separating said electric input signal to provide separated signals representing said at least two sound sources, the sound source separation unit being configured to determine the most optimal representation (W) of the last A samples given the atoms in the analysis dictionary of the database, and to generate said at least two sound sources by combining atoms in the reconstruction dictionary of the database using the optimal representation (W). The invention may e.g. be used for hearing devices, e.g. hearing aids, headsets, ear phones, active ear protection systems, handsfree telephone systems, mobile telephones, teleconferencing systems, public address systems, classroom amplification systems, etc.

    Automatic real-time hearing aid fitting based on auditory evoked potentials evoked by natural sound signals

    公开(公告)号:US09426582B2

    公开(公告)日:2016-08-23

    申请号:US14723079

    申请日:2015-05-27

    申请人: Oticon A/S

    摘要: The application relates to a hearing aid comprising at least one electrode located at a surface of a housing of the hearing aid to allow said electrodes to contact the skin of a user during use of the hearing aid, at least one electrode being adapted to pick up a low voltage signal from the user's brain, the hearing aid further comprising an amplifier unit operationally connected to said electrode(s) and adapted for amplifying said low voltage signal(s) to provide amplified brain signal(s), and a signal processing unit adapted to process said amplified brain signal(s) to provide a processed brain signal as well as to apply a time and frequency dependent gain to an input audio signal and to provide a processed audio output signal. The application further relates to a method of operating a hearing aid and to its use and to a hearing aid system. The object of the present application is to provide a hearing aid capable of monitoring a user's hearing ability over time. The problem is solved in that the signal processing unit is configured a) to identify characteristic signal parameters describing a current time segment of the electric audio input signal, b) to decide whether said characteristic signal parameters fulfill a predefined criterion, and, if said predefined criterion is fulfilled, c) to store brain signal data representative of the low voltage electric signal from the user's brain picked up during said current time segment or corresponding amplified brain signal(s) in a memory, and d) to use the stored brain signal data to determine a processed brain signal related to said predefined criterion, and to modify said time and frequency dependent gain depending on said processed brain signal. This has the advantage of providing a hearing aid wherein at least a part of the fitting process of a hearing aid to a particular user can be automated and/or continuously updated. The invention may e.g. be used for the hearing aids or hearing aid systems where a continuous evaluation of a user's hearing thresholds is needed.

    Diminishing tinnitus loudness by hearing instrument treatment

    公开(公告)号:US09712933B2

    公开(公告)日:2017-07-18

    申请号:US15208340

    申请日:2016-07-12

    申请人: OTICON A/S

    IPC分类号: H04R25/00

    摘要: A device for a hearing impaired person being subjected to a tinnitus is disclosed. The device includes an input transducer for providing an electric input signal comprising audio, a controllable filter for filtering the electric input signal and configured to output a filtered electric input signal such that signal energy of the electric input signal is reduced in at least a part of a frequency range, a signal processor, connected to the controllable filter, for processing the filtered electrical input signal according to a processing algorithm and to output a processed electric signal, an output transducer, connected to the signal processor, for converting the processed electric signal to an acoustic output signal to be presented to the hearing impaired person wearing the listening device, and an activator, coupled to the controllable filter, for activating and deactivating the controllable filter in dependence on a detection signal and a timer signal.

    Configurable hearing instrument
    9.
    发明授权
    Configurable hearing instrument 有权
    可配置的听力仪器

    公开(公告)号:US09560458B2

    公开(公告)日:2017-01-31

    申请号:US14103399

    申请日:2013-12-11

    申请人: OTICON A/S

    摘要: A system for operating a hearing instrument is disclosed. The system comprises one or more electrodes for measuring the brain wave signals of a user wearing a hearing instrument. The electrodes are placed on the scalp of the user. Based on the measured brain wave signals, a detecting unit is configured to detect a relaxation state of the hearing instrument. A controller sets the hearing instrument to a relaxation mode setting in response to the detection of the relaxation state of the user.

    摘要翻译: 公开了一种操作听力仪器的系统。 该系统包括一个或多个电极,用于测量佩戴助听器的用户的脑波信号。 电极放置在使用者的头皮上。 基于所测量的脑波信号,检测单元被配置为检测助听器的松弛状态。 响应于用户的松弛状态的检测,控制器将听力仪器设置为松弛模式设置。

    Methods and apparatus for processing audio signals
    10.
    发明授权
    Methods and apparatus for processing audio signals 有权
    用于处理音频信号的方法和装置

    公开(公告)号:US09130523B2

    公开(公告)日:2015-09-08

    申请号:US13890001

    申请日:2013-05-08

    申请人: Oticon A/S

    摘要: A method for processing an audio signal (i(t)), comprises: receiving a first set (x(t)) of time-varying signals representing a first sound comprised in the audio signal (i(t)), the first set (x(t)) of time-varying signals comprising an amplitude modulation signal (a(t)), a carrier frequency signal (fc(t)), a pitch signal (f0(t)) and an FM index signal (h(t)); and modifying the first set (x(t)) of time-varying signals by modifying the amplitude of the FM index signal (h(t)), thereby providing a first modified set (x′(t)) of time-varying signals. The resulting first modified set (x′(t)) of time-varying signals may subsequently be modulated to provide an audio output signal.

    摘要翻译: 一种用于处理音频信号(i(t))的方法,包括:接收表示音频信号(i(t))中包含的第一声音的时变信号的第一组(x(t)),第一组 包括幅度调制信号(a(t)),载波频率信号(fc(t)),音调信号(f0(t))和FM索引信号(h)的时变信号(x(t)) (t)); 以及通过修改FM索引信号(h(t))的幅度来修改时变信号的第一集合(x(t)),从而提供时变信号的第一修改集(x'(t)) 。 可以随后调制所得到的时变信号的第一修改集(x'(t))以提供音频输出信号。