Speaker array
    1.
    发明授权

    公开(公告)号:US12108209B2

    公开(公告)日:2024-10-01

    申请号:US17917210

    申请日:2020-04-09

    CPC classification number: H04R1/403 H04R5/02 H04R2201/40

    Abstract: The speaker array includes a first speaker 1, a second speaker 2, and a local sound emission structure 3. The first transmission portion 311 and the second transmission portion 312 are arranged in such a manner that the distance between the center position of the first transmission portion 311 and the center position of the second transmission portion 312 is smaller than the distance between the center position of the first speaker 1 and the center position of the second speaker 2, in order to generate sound sources that are arranged at an interval narrower than the interval between the first speaker 1 and the second speaker 2.

    REAL-TIME PROCESSING OF AUDIO DATA CAPTURED USING A MICROPHONE ARRAY

    公开(公告)号:US20180206038A1

    公开(公告)日:2018-07-19

    申请号:US15406298

    申请日:2017-01-13

    Abstract: The technology described in this document can be embodied in a method of reproducing audio related to a teleconference between a second location and a remote first location. The method includes receiving data representing audio captured by a microphone array disposed at the remote first location. The data includes directional information representing the direction of a sound source relative to the remote microphone array. The method also includes obtaining, based on the directional information, information representative of head-related transfer functions (HRTFs) corresponding to the direction of the sound source relative to the remote microphone array, and generating, using one or more processing devices, an output signal for an acoustic transducer located at the second location. The output signal is generated by processing the received data using the information representative of the one or more HRTFs, and is configured to cause the acoustic transducer to generate an audible acoustic signal.

    Hearing system comprising a separate microphone unit for picking up a users own voice

    公开(公告)号:US09860656B2

    公开(公告)日:2018-01-02

    申请号:US15042248

    申请日:2016-02-12

    Applicant: Oticon A/S

    Abstract: A hearing system for communication with a mobile telephone comprises a hearing device and a separate microphone unit adapted for picking up a voice of a user. The microphone unit comprises a) a multitude M≧2 of input units for picking up or receiving a signal representative of a sound from the environment; b) an adaptive multi-input unit noise reduction system for providing an estimate Ŝ of a target signal s comprising the user's voice, the multi-input unit noise reduction system comprises a multi-input beamformer filtering unit configured to determine filter weights w(k,m) for providing a beamformed signal, wherein signal components from other directions than a direction of a target signal source are attenuated, whereas signal components from the direction of the target signal source are left un-attenuated; and c) antenna and transceiver circuitry for transmitting said estimate Ŝ of the user's voice to another device.

    Modal based architecture for controlling the directivity of loudspeaker arrays

    公开(公告)号:US09762999B1

    公开(公告)日:2017-09-12

    申请号:US14869760

    申请日:2015-09-29

    Applicant: Apple Inc.

    CPC classification number: H04R1/403 H04R3/12 H04R5/02 H04R2201/40 H04R2201/401

    Abstract: A directivity pattern generator for producing sound patterns using a modal architecture is described. The directivity pattern generator may include a beam pattern mixing unit, which defines sound patterns to be emitted by an audio system in terms of a set of frequency invariant modes or modal patterns. The beam pattern mixing unit produces a set of modal gains representing the level or degree each of the predefined modal patterns is to be applied to a set of audio streams. Modal filters may be used to modal amplitudes that compensate for inefficiencies of the each modal pattern at low frequencies. The directivity pattern generator may include a modal decomposition unit for generating driving signals for each transducer in one or more loudspeaker arrays based on weighted values for the modal gains/amplitudes.

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