公开(公告)号：US11955938B2

公开(公告)日：2024-04-09

申请号：US17642538

申请日：2020-09-11

申请人： The University of Tokyo ,  KOGAKUIN UNIVERSITY ,  Foster Electric Company, Limited

发明人： Tsutomu Kaizuka ,  Kimihiko Nakano ,  Yoshio Koike ,  Yoshiteru Uchida ,  Manabu Sasajima

IPC分类号： H04R3/00 ,  H03G3/30 ,  H04R1/40 ,  H04R3/12

CPC分类号： H03G3/3005 ,  H04R1/403 ,  H04R3/12 ,  H03G2201/103 ,  H04R2201/401 ,  H04R2430/01

摘要： Proposed is an acoustic output device that obtains enough distance attenuation to achieve localization of a sound field by controlling the driving of a loudspeaker array by use of a more compact shape. The acoustic output device 10 comprises: a loudspeaker array 20 that includes a plurality of loudspeakers 20-1, 20-2, . . . , 20-N arranged in a two-dimensional plane; and an amplifier array 40 that includes a plurality of amplifiers 40-1, 40-2, . . . , 40-N that control the amplitude and phase of the drive signals for each loudspeaker according to the eigenvectors of the predetermined radiation mode of the loudspeaker array 20.

公开(公告)号：US11950081B2

公开(公告)日：2024-04-02

申请号：US17669574

申请日：2022-02-11

申请人： Nuance Communications, Inc.

发明人： Dushyant Sharma ,  Patrick A. Naylor ,  Uwe Helmut Jost

IPC分类号： H04S7/00 ,  G06T7/70 ,  G10L15/06 ,  G10L15/22 ,  G10L19/00 ,  G10L19/008 ,  G10L19/16 ,  G10L21/0208 ,  G10L21/0216 ,  H04R1/40 ,  H04R3/00 ,  H04R5/027 ,  H04S3/00

CPC分类号： H04S7/30 ,  G06T7/70 ,  G10L15/063 ,  G10L15/22 ,  G10L19/008 ,  G10L19/167 ,  G10L21/0208 ,  H04R1/406 ,  H04R3/005 ,  H04R5/027 ,  H04S3/008 ,  G10L2019/0001 ,  G10L2019/0002 ,  G10L2021/02166 ,  H04R2201/401 ,  H04S2400/01 ,  H04S2400/15

摘要： A method, computer program product, and computing system for generating a plurality of acoustic relative transfer functions for a plurality of audio acquisition devices of an audio recording system deployed in an acoustic environment. The plurality of acoustic relative transfer functions may be encoded into a first embedding of acoustic relative transfer functions and at least a second embedding of acoustic relative transfer functions. Information may be extracted from at least the first embedding of acoustic relative transfer functions.

公开(公告)号：US11950062B1

公开(公告)日：2024-04-02

申请号：US17709563

申请日：2022-03-31

申请人： Amazon Technologies, Inc.

发明人： Wai Chung Chu ,  Carlo Murgia

IPC分类号： H04R3/00 ,  G10L25/21 ,  H04R1/40

CPC分类号： H04R3/005 ,  G10L25/21 ,  H04R1/406

摘要： A system configured to improve sound source localization (SSL) processing by reducing a number of direction vectors and grouping the direction vectors into direction cells is provided. The system performs clustering to generate a smaller set of direction vectors included in a delay-direction codebook, reducing a size of the codebook to the number of unique delay vectors. In addition, the system groups the direction vectors into direction cells having a regular structure (e.g., predetermined uniformity and/or symmetry), which simplifies SSL processing and results in a substantial reduction in computational cost. The system may also select between multiple codebooks and/or dynamically adjust the codebook to compensate for changes to the microphone array. For example, a device with a microphone array fixed to a display that can tilt may adjust the codebook based on a tilt angle of the display to improve accuracy.

公开(公告)号：US11950050B1

公开(公告)日：2024-04-02

申请号：US18152498

申请日：2023-01-10

申请人： ClearOne, Inc.

发明人： Derek Graham ,  David K. Lambert ,  Michael Braithwaite

IPC分类号： H04R1/40 ,  G10L21/0208 ,  G10L21/0232 ,  H04R1/08 ,  H04R1/28 ,  H04R3/00 ,  H04R3/04 ,  H04R17/02 ,  H04R29/00 ,  H04R31/00

CPC分类号： H04R1/406 ,  G10L21/0232 ,  H04R1/08 ,  H04R1/2876 ,  H04R3/005 ,  H04R3/04 ,  H04R17/02 ,  H04R29/005 ,  H04R31/006 ,  G10L2021/02082 ,  H04R2201/021 ,  H04R2420/07 ,  H04R2430/21 ,  H04R2430/23

摘要： This disclosure describes an apparatus and method of an embodiment of an invention that is a ceiling tile microphone that includes: a plurality of microphones positioned at predetermined locations and coupled together as a microphone array used for beamforming; a single ceiling tile with an outer surface on the front side of the ceiling tile where the outer surface is acoustically transparent, the microphone array couples to the back side of the single ceiling tile, the microphone array combines with the ceiling tile as a single unit, the single unit is mountable in a drop ceiling in place of a single ceiling tile included in the drop ceiling, all or part of the single unit is in the drop space of the drop ceiling when the single unit is used in a drop ceiling mounting configuration; where the ceiling tile microphone further includes beamforming, acoustic echo cancellation, and auto mixing.

公开(公告)号：US20240107225A1

公开(公告)日：2024-03-28

申请号：US17768317

申请日：2020-10-29

申请人： Nokia Technologies OY

发明人： Sujeet Shyamsundar MATE ,  Antti Johannes ERONEN ,  Arto Juhani LEHTINIEMI ,  Lasse Juhani LAAKSONEN

IPC分类号： H04R1/40

CPC分类号： H04R1/406

摘要： There is provided an apparatus comprising means for receiving spatial audio capture requirement(s) of one or more user devices; determining position and/or orientation information of the one or more user devices; generating one or more privacy masks at least partly based on the spatial audio capture requirement(s) and position and/or orientation information of the one or more user devices; and transmitting the generated privacy masks to the one or more user devices.

公开(公告)号：US11941318B2

公开(公告)日：2024-03-26

申请号：US17785717

申请日：2021-04-27

申请人： Beijing BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

发明人： Xiaomang Zhang ,  Xiangjun Peng ,  Tiankuo Shi ,  Chenxi Zhao ,  Shuo Zhang ,  Yifan Hou ,  Yan Sun ,  Li Tian ,  Jing Liu ,  Wei Sun ,  Zhihua Ji ,  Yanhui Xi

IPC分类号： G06F3/147 ,  G06F3/01 ,  H04R1/40

CPC分类号： G06F3/147 ,  G06F3/013 ,  H04R1/403

摘要： The present application provides an audio and video playing system, a playing method and a playing device. The system comprises: a display device; a directional sound output module configured to output a directional sound signal; a tracking element configured to monitor a target visual area and to monitor the target display area on the display screen; and a processor, connected with the directional sound output module and the tracking element respectively, and configured to acquire a first audio and video data to be output in the target display area, display image information of the first audio and video data in the target display area, and output sound information of the first audio and video data to the directional sound output module such that the directional sound output module output a directional sound signal towards the target visual area.

公开(公告)号：US20240098418A1

公开(公告)日：2024-03-21

申请号：US18511673

申请日：2023-11-16

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Peter Grosche ,  Martin Pollow

IPC分类号： H04R5/02 ,  H04R1/26 ,  H04R1/40 ,  H04R3/12

CPC分类号： H04R5/02 ,  H04R1/26 ,  H04R1/403 ,  H04R3/12 ,  H04R2201/401 ,  H04R2203/12

摘要： A device and a method are provided for producing a sound field are disclosed. The device comprises a plurality of loudspeakers arranged at a plurality of locations within a plane and a processing circuitry configured to drive the plurality of loudspeakers. A first subset of the plurality of loudspeakers defines a first rhombus within the plane and a second subset of the plurality of loudspeakers defines a second rhombus within the plane. The first rhombus is oriented substantially perpendicular to the second rhombus. Further subsets of the plurality of loudspeakers may define further rhombic sub-arrays. The audio device may be implemented as a soundbar or a sound panel, which provides a richer sound experience.

公开(公告)号：US20240096348A1

公开(公告)日：2024-03-21

申请号：US18331710

申请日：2023-06-08

申请人： Sonos, Inc.

发明人： Saeed Bagheri Sereshki ,  Daniele Giacobello

IPC分类号： G10L25/84 ,  G10L15/08 ,  G10L15/22 ,  G10L21/0232 ,  H04R1/40

CPC分类号： G10L25/84 ,  G10L15/08 ,  G10L15/22 ,  G10L21/0232 ,  H04R1/406 ,  G10L2015/088

摘要： Systems and methods for suppressing noise and detecting voice input in a multi-channel audio signal captured by a plurality of microphones include (i) capturing a first audio signal via a first microphone and a second audio signal via a second microphone, wherein the first and second audio signals respectively comprises first and second noise content from a noise source; (ii) identifying the first noise content in the first audio signal; (iii) using the identified first noise content to determine an estimated noise content captured by the plurality of microphones; (iv) using the estimated noise content to suppress the first and second noise content in the first and second audio signals; (v) combining the suppressed first and second audio signals into a third audio signal; and (vi) determining that the third audio signal includes a voice input comprising a wake word.

公开(公告)号：US20240096183A1

公开(公告)日：2024-03-21

申请号：US18510869

申请日：2023-11-16

申请人： ULTRAHAPTICS IP LTD

发明人： Thomas Andrew Carter ,  Benjamin John Oliver Long ,  Sriram Subramanian

IPC分类号： G08B6/00 ,  G06F3/01 ,  G06F3/038 ,  G10K15/04 ,  H04R1/40

CPC分类号： G08B6/00 ,  G06F3/016 ,  G06F3/038 ,  G10K15/04 ,  H04R1/40 ,  H04R2217/03

摘要： A system providing various improved processing techniques for haptic feedback is described. An acoustic field is defined by one or more control points in a space within which the acoustic field may exist. Each control point is assigned an amplitude value equating to a desired amplitude of the acoustic field at the control point. Transducers are then controlled to create an acoustic field exhibiting the desired amplitude at each of the control points. When human skin interacts with the acoustic field, vibrations of the skin are interpreted by mechanoreceptors being excited and sending signals to the brain via the nervous system. Improved processing techniques allow for more efficient real-world operation.

公开(公告)号：US11924944B1

公开(公告)日：2024-03-05

申请号：US17498955

申请日：2021-10-12

申请人： Fourstar Group Inc.

发明人： Yu-Chi Wu

IPC分类号： H05B47/12 ,  G10L15/22 ,  H04R1/40 ,  H04R3/00

CPC分类号： H05B47/12 ,  G10L15/22 ,  H04R1/406 ,  H04R3/005 ,  G10L2015/223

摘要： A voice-activated light system that includes a microphone for receiving one or more voice commands (which may be referred to as a “voice microphone”), one or more light sources (such as LEDs) coupled to a controller and a light driver. The light driver is for driving the light sources and the controller is for detecting a voice command in order to control the mode of operation of the one or more light sources. The controller can have multiple control commands each for selecting a different mode of operation of the light source(s). The modes can be controlled by a common voice input term followed by a second voice command corresponding to a mode of operation of the light source. The system may include a second microphone which may be referred to herein as a “music microphone”. The commands can include “light show,” “slow pulse,” “steady on,” “blinking,” or “off”.