公开(公告)号：US09900694B1

公开(公告)日：2018-02-20

申请号：US15339425

申请日：2016-10-31

Applicant: Amazon Technologies, Inc.

Inventor： Timothy Theodore List

IPC: H04R25/00 ,  H04R5/02 ,  H04S3/00 ,  H04S7/00 ,  H04R1/00 ,  H04R1/40

CPC classification number: H04R5/02 ,  H04R1/00 ,  H04R1/403 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2203/12 ,  H04R2205/022 ,  H04S3/002 ,  H04S7/303 ,  H04S2400/11

Abstract: In an augmented reality environment, a speaker array is centrally located within an area to generate sound for the environment. The speaker array has a spherical or hemispherical body and speakers mounted about the body to emit sound in multiple directions. A controller is provided to select sets of speakers to form beams of sound in determined directions. The shaped beams are output to deliver a full audio experience in the environment from the fixed location speaker array.

公开(公告)号：US09838784B2

公开(公告)日：2017-12-05

申请号：US14957447

申请日：2015-12-02

Applicant: Knowles Electronics, LLC

Inventor： Harinarayanan Erumbi Vallabhan ,  Shailesh Sakri ,  Carlos Avendano ,  Ludger Solbach

IPC: H04R3/00 ,  H04M1/03

CPC classification number: H04R3/005 ,  H04M1/03 ,  H04R2201/405 ,  H04R2430/20 ,  H04R2430/21

Abstract: Systems and methods for improving performance of a directional audio capture system are provided. An example method includes correlating phase plots of at least two audio inputs, with the audio inputs being captured by at least two microphones. The method can further include generating, based on the correlation, estimates of salience at different directional angles to localize a direction of a source of sound. The method can allow providing cues to the directional audio capture system based on the estimates. The cues include attenuation levels. A rate of change of the levels of attenuation is controlled by attack and release time constants to avoid sound artifacts. The method also includes determining a mode based on an absence or presence of one or more peaks in the estimates of salience. The method also provides for configuring the directional audio capture system based on the determined mode.

公开(公告)号：US20170308352A1

公开(公告)日：2017-10-26

申请号：US15139238

申请日：2016-04-26

Applicant: Analog Devices, Inc

Inventor： MARTIN KESSLER

IPC: G06F3/16 ,  H04R3/00

CPC classification number: G06F3/165 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/21 ,  H04R2499/13

Abstract: Disclosed herein are microphone arrays for directional reception, along with related system, devices, and techniques. For example, a four-microphone array for directional signal reception may include first, second, and third microphones arranged such that projections of the first, second, and third microphones in a plane provide corners of a triangle in the plane. In some embodiments, a fourth microphone may be arranged such that a projection of the fourth microphone in the plane is disposed in an interior of the triangle. In other embodiments, the fourth microphone may be arranged such that the projection of the fourth microphone in the plane is disposed outside the interior of the triangle, and a distance between the first microphone and the second microphone is different from a distance between the first microphone and the third microphone.

公开(公告)号：US09788109B2

公开(公告)日：2017-10-10

申请号：US14848703

申请日：2015-09-09

Applicant: Microsoft Technology Licensing, LLC

Inventor： Youhong Lu ,  Chun Beng Goh ,  Douglas L. Beck ,  Jia Hua ,  Ilya Khorosh

IPC: H04R3/00 ,  H04R29/00 ,  H04R1/40 ,  H04R5/027

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R5/027 ,  H04R29/005 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2410/01 ,  H04R2430/20 ,  H04R2499/11 ,  H04S2400/15

Abstract: Architectures of numbers of microphones and their positioning in a device for sound source direction estimation and source separation are presented. The directions of sources are front, back, left, right, top, and bottom of the device, and can be determined by amplitude and phase differences of microphone signals with proper microphone positioning. The source separation is to separate the sound coming from different directions from the mix of sources in microphone signals. This can be done with blind source separation (BSS), independent component analysis (ICA), and beamforming (BF) technologies. The device can perform many kinds of audio enhancements for the device. For example, it can perform noise reduction for communications; it can choose a source from a desired direction to perform speech recognition; and it can correct sound perceiving directions in microphones and generate desired sound images like stereo audio output. In addition, with source separation, 2.1, 5.1, 7.1, and other audio encoding and surround sound effects can be straightforward.

公开(公告)号：US09788103B2

公开(公告)日：2017-10-10

申请号：US13820347

申请日：2011-09-01

Applicant: Pär Gunnars Risberg

Inventor： Pär Gunnars Risberg

IPC: H04R1/24 ,  H04R1/40 ,  H04R1/26

CPC classification number: H04R1/24 ,  H04R1/26 ,  H04R1/403 ,  H04R2201/028 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2205/022

Abstract: A speaker system (1, 1′, 1″) comprises a first speaker driver group (G1), comprising at least one first speaker driver (S1) and a first amplifier (A1), and a second speaker driver group (G2), comprising at least one second speaker driver (S2) and a second amplifier (A2). The speaker system further comprises a digital signal processor (2), adapted to provide a first signal to the first speaker driver group (G1) and a second signal to the second signal group (G2), wherein the first and second signals differ with respect to frequency range and at least one of the speaker driver groups comprises at least 4, 6, 8 or 10 speaker drivers.

公开(公告)号：US20170280265A1

公开(公告)日：2017-09-28

申请号：US15514455

申请日：2015-09-29

Applicant: APPLE INC.

Inventor： Bruce C. Po

IPC: H04S7/00 ,  H04R3/12 ,  G06F3/16 ,  H04R3/04 ,  H04R1/40

CPC classification number: H04S7/302 ,  G06F3/162 ,  G06F3/165 ,  H04R1/403 ,  H04R3/04 ,  H04R3/12 ,  H04R5/04 ,  H04R29/007 ,  H04R2201/025 ,  H04R2201/405 ,  H04S7/30 ,  H04S7/301

Abstract: A system and method is described for determining whether a loudspeaker device has relocated, tilted, rotated, or changed environment such that one or more parameters for driving the loudspeaker may be modified and/or a complete reconfiguration of the loudspeaker system may be performed. In one embodiment, the system may include a set of sensors. The sensors provide readings that are analyzed to determine 1) whether the loudspeaker has moved since a previous analysis and/or 2) a distance of movement and/or a degree change in orientation of the loudspeaker since the previous analysis. Upon determining the level of movement is below a threshold value, the system adjusts previous parameters used to drive one or more of the loudspeakers. By adjusting previous parameters instead of performing a complete recalibration, the system provides a more efficient technique for ensuring that the loudspeakers continue to produce accurate sound for the listener.

公开(公告)号：US09774953B2

公开(公告)日：2017-09-26

申请号：US14787621

申请日：2014-04-29

Applicant: University of Surrey

Inventor： David Nugent

IPC: H04R3/00 ,  H04R5/027 ,  H04R1/02 ,  H04R1/40 ,  H04M1/03 ,  G10K11/00 ,  H04S3/00 ,  H04M1/60

CPC classification number: H04R5/027 ,  G10K11/002 ,  H04M1/03 ,  H04M1/6008 ,  H04R1/02 ,  H04R1/026 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2499/11 ,  H04S3/00 ,  H04S2400/15

Abstract: A system for directionally selective sound reception comprises an array of pressure sensors (120a, 120c) each arranged to output a pressure signal indicative of pressure, and a processor arranged to receive the pressure signals. The sensor array comprises a support (130) supporting the four sensors. Two of the sensors are mounted on one side of the support and at least a third sensor is supported on an opposite side of the support. The sound pressure difference measured between the first sensor and the second sensor caused by sound arriving at the array from a direction parallel to the support (130) is dependent on the distance between the first and second sensors and the nature of material in the space between the first and second sensors. The sound pressure difference measured between the first and third sensors caused by sound travelling perpendicular to the support is dependent on the distance between the first and third sensors. The nature of material in the space between the first and third sensors, and the spacings and the materials are selected such that the sound pressure differences are substantially equal.

公开(公告)号：US09747917B2

公开(公告)日：2017-08-29

申请号：US13918752

申请日：2013-06-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Eli Tzirkel-Hancock ,  Igal Bilik ,  Moshe Laifenfeld

IPC: G10L21/00 ,  G10L15/00 ,  G10L21/0208 ,  H04R3/00 ,  G01S13/06 ,  G01S15/06 ,  G10L21/0216

CPC classification number: G10L21/00 ,  G01S13/06 ,  G01S15/06 ,  G10L15/00 ,  G10L21/0208 ,  G10L2021/02166 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/25

Abstract: Methods and systems are provided for receiving desired sounds. The system includes a position sensor configured to determine an occupant position of an occupant engaging in speech within a defined space and transmit the speaking occupant position. A plurality of microphones are configured to receive sound from within the defined space and transmit audio signals corresponding to the received sound. A processor, in communication with the position sensor and the microphones, is configured to receive the speaking occupant position and the audio signals, apply a beamformer to the audio signals to direct a microphone beam toward the occupant position, and generate a beamformer output signal.

公开(公告)号：US09615173B2

公开(公告)日：2017-04-04

申请号：US14404733

申请日：2013-04-23

Applicant: SONY CORPORATION

Inventor： Yoichiro Sako ,  Katsuhisa Aratani ,  Kazuyuki Sakoda ,  Kohei Asada ,  Mitsuru Takehara ,  Takatoshi Nakamura ,  Kazuhiro Watanabe ,  Akira Tange ,  Hiroyuki Hanaya ,  Yuki Koga ,  Tomoya Onuma

IPC: H04R3/00 ,  G10L25/51 ,  H04S7/00 ,  H04R1/40 ,  H04R3/12 ,  H04R5/04 ,  G10L21/0272 ,  G10L21/0216

CPC classification number: H04R3/005 ,  G10L21/0272 ,  G10L25/51 ,  G10L2021/02166 ,  H04R1/403 ,  H04R1/406 ,  H04R3/12 ,  H04R5/04 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/23 ,  H04S7/303 ,  H04S2400/15 ,  H04S2420/13

Abstract: Provided is an information processing system including a recognizing unit configured to recognize a first target and a second target on the basis of signals detected by a plurality of sensors arranged around a specific user, an identifying unit configured to identify the first target and the second target recognized by the recognizing unit, an estimating unit configured to estimate a position of the specific user in accordance with the a signal detected by any one of the plurality of sensors, and a signal processing unit configured to process each of signals acquired from sensors around the first target and the second target identified by the identifying unit in a manner that, when being output from a plurality of actuators arranged around the specific user, the signals are localized near the position of the specific user estimated by the estimating unit.

公开(公告)号：US09565507B2

公开(公告)日：2017-02-07

申请号：US14652909

申请日：2013-12-17

Applicant: PANAMAX35, LLC

Inventor： Eliot Maxwell Case

IPC: H04R29/00 ,  H04R1/08 ,  H04R9/08

CPC classification number: H04R29/004 ,  H04R1/08 ,  H04R9/08 ,  H04R2201/405 ,  H04R2430/25

Abstract: A higher-order acoustical pressure measurement device (e.g., microphone) is disclosed. The device includes a first acoustic pressure measurement from a generally concentrated spatial location and a second acoustic pressure measurement having a spatiality greater than the concentrated spatial location of the first acoustic pressure measurement and at least one destructive interference signal. The destructive interference signal is characterized at least in part by the spatiality of the second acoustic pressure measurement. A higher-order microphone includes sensor elements configured to provide a destructive interference signal such that interference at one sensor element is configured to lower the destructive interference signal for the primary direction of directivity from a source signal.

Abstract translation: 公开了一种更高级的声压测量装置（例如麦克风）。 该装置包括来自一般集中的空间位置的第一声压测量和具有大于第一声压测量的集中空间位置的空间性和至少一个相消干涉信号的第二声压测量。 破坏性干扰信号至少部分地由第二声压测量的空间特性表征。 高阶麦克风包括被配置为提供相消干涉信号的传感器元件，使得一个传感器元件处的干扰被配置为从源信号降低主要方向方向的相消干涉信号。