公开(公告)号：US09774998B1

公开(公告)日：2017-09-26

申请号：US15285446

申请日：2016-10-04

Applicant: Amazon Technologies, Inc.

Inventor： Olusanya Temitope Soyannwo ,  Tina Yung-Ting Chen ,  Edward Dietz Crump ,  Kurt Wesley Piersol ,  Kavitha Velusamy

IPC: G06F15/173 ,  H04W4/02 ,  H04L29/08 ,  G10L17/22 ,  G01S3/802

CPC classification number: H04W4/023 ,  G01S3/802 ,  G01S11/14 ,  G06F9/4451 ,  G10L17/22 ,  H04L63/0861 ,  H04L67/141 ,  H04L67/18 ,  H04L67/24 ,  H04L67/306 ,  H04W4/026 ,  H04W4/33

Abstract: A computing system with multiple devices local to an environment facilitates active transfer among the multiple devices as a user moves about the environment. The devices may sense a presence or non-presence of the user and attempt to coordinate transfer to a device proximal to the user. In another implementation, the devices may communicate with a remote system that monitors a location of the user within the environment and causes content associated with the user to transfer between computing devices of the system based on the location and movement of the user.

公开(公告)号：US10746840B1

公开(公告)日：2020-08-18

申请号：US15601981

申请日：2017-05-22

Applicant: Amazon Technologies, Inc.

Inventor： William Folwell Barton ,  Kenneth Edgar Hild, II ,  Ramya Gopalan ,  Kavitha Velusamy ,  Amit Singh Chhetri

IPC: H04R3/00 ,  G01S3/808 ,  G01S3/86 ,  G01S3/805 ,  G01S5/22 ,  H04B3/20 ,  H04R25/00

Abstract: The systems, devices, and processes described herein may identify a beam of a voice-controlled device that is directed toward a reflective surface, such as a wall. The beams may be created by a beamformer. An acoustic echo canceller (AEC) may create filter coefficients for a reference sound. The filter coefficients may be analyzed to identify beams that include multiple peaks. The multiple peaks may indicate presence of one or more reflective surfaces. Using the amplitude and the time delay between the peaks, the device may determine that it is close to a reflective surface in a direction of the beam.

公开(公告)号：US10249299B1

公开(公告)日：2019-04-02

申请号：US15583182

申请日：2017-05-01

Applicant: Amazon Technologies, Inc.

Inventor： Gregory Michael Hart ,  Kavitha Velusamy ,  William Spencer Worley, III

IPC: G10L15/20 ,  G10L25/51 ,  G10L21/0232 ,  G10L21/0216 ,  G10L21/0208

Abstract: Techniques for tailoring beamforming techniques to environments such that processing resources may be devoted to a portion of an audio signal corresponding to a lobe of a beampattern that is most likely to contain user speech. The techniques take into account both acoustic characteristics of an environment and heuristics regarding lobes that have previously been found to include user speech.

公开(公告)号：US09753119B1

公开(公告)日：2017-09-05

申请号：US14167813

申请日：2014-01-29

Applicant: Amazon Technologies, Inc.

Inventor： Kavitha Velusamy ,  Ning Yao ,  Wai Chung Chu ,  Sowmya Gopalan ,  Qiang Liu ,  Rahul Agrawal ,  Manika Puri

IPC: G01S5/20

CPC classification number: G01S5/20 ,  G01S5/18 ,  G01S5/22 ,  G01S17/023 ,  G01S17/36 ,  G01S17/42 ,  G01S17/46 ,  G01S17/89

Abstract: A system may utilize sound localization techniques, such as time-difference-of-arrival techniques, to estimate an audio-based sound source position from which a sound originates. An optical image or depth map of an area containing the sound source location may then captured and analyzed to detect an object that is known or expected to have produced the sound. The position of the object may also be determined based on the analysis of the optical image or depth map. The position of the sound source may then be determined based at least in part on the position of the detected object or on a combination of the audio-based sound source position and the determined position of the object.

公开(公告)号：US09640179B1

公开(公告)日：2017-05-02

申请号：US13928751

申请日：2013-06-27

Applicant: Amazon Technologies, Inc.

Inventor： Gregory Michael Hart ,  Kavitha Velusamy ,  William Spencer Worley, III

IPC: G10L15/20

CPC classification number: G10L15/20 ,  G10L21/0208 ,  G10L2021/02082 ,  H04R3/005 ,  H04R2420/09

Abstract: Techniques for tailoring beamforming techniques to environments such that processing resources may be devoted to a portion of an audio signal corresponding to a lobe of a beampattern that is most likely to contain user speech. The techniques take into account both acoustic characteristics of an environment and heuristics regarding lobes that have previously been found to include user speech.