公开(公告)号：US12061278B1

公开(公告)日：2024-08-13

申请号：US18346162

申请日：2023-06-30

Applicant: Apple Inc.

Inventor： Christopher T. Eubank ,  Martin E. Johnson ,  Daniel K. Boothe ,  Jonathan D. Sheaffer

IPC: G01S3/808 ,  G06F16/68 ,  H04R3/00 ,  H04S7/00

CPC classification number: G01S3/8083 ,  G06F16/686 ,  H04R3/005 ,  H04S7/301

Abstract: Disclosed are techniques for a multimedia device with audio and video capturing capability to identify an audio device based on acoustic playback signal if the audio device cannot be identified from captured video. The multimedia device may assemble a list of candidate audio devices that are a possible match for the observed audio device from a database of previously recognized audio devices and may transmit commands to the candidate audio devices to play acoustic identification signals. The acoustic identification signals may be audible sound or ultrasonic tone sequences with embedded identification information unique to each audio device. The multimedia device may record and analyze the acoustic identification signals received from any of the candidate audio devices to construct metrics to select the most likely candidate for the observed audio device. The metrics may include time of flight, direction of arrival, received amplitude, direct-to-reverberant ratio (DRR) of the acoustic identification signals.

公开(公告)号：US20240255607A1

公开(公告)日：2024-08-01

申请号：US17774408

申请日：2021-12-02

Applicant: TSINGHUA UNIVERSITY

Inventor： Tianyang WANG ,  Shilin SUN ,  Fulei CHU

IPC: G01S5/22 ,  G01S3/808

CPC classification number: G01S5/22 ,  G01S3/8083

Abstract: The present disclosure provides sound source identification based on array measurement and sparse prior information, which uses a generalized minimax concave penalty function to apply a sparse constraint on a sound source reconstruction error, determines position information of a potential sound source according to a basic sound image generated by a conventional beamforming method, and generates an initial solution vector including a sound source position prior information in a specific way. Compared with using a random initial value and a zero initial value, computational efficiency of the disclosed sound field reconstruction method is improved. Further, an iterative convergence speed is improved by using a proximal gradient acceleration and an adaptive step size backtracking strategy, an optimal step size that can meet convergence is adaptively selected, and sound field reconstruction can be completed more quickly. The present disclosure realizes high-resolution and high-efficiency sound source identification by using a microphone array.

公开(公告)号：US20240241206A1

公开(公告)日：2024-07-18

申请号：US18623160

申请日：2024-04-01

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Hanhao YOU ,  Xiaobin SHEN

IPC: G01S3/808 ,  A63F13/537 ,  G01S5/20 ,  G06F3/16

CPC classification number: G01S3/8083 ,  A63F13/537 ,  G01S5/20 ,  G06F3/162 ,  A63F2300/306 ,  A63F2300/6072 ,  A63F2300/6081 ,  A63F2300/8076

Abstract: This application discloses a method and apparatus for determining characteristics of a sound source. The method may include: acquiring a first position of a first virtual role controlled by an application client in a virtual scene; detecting, in a sound source detection area associated with the first position, a second position of a sound source virtual object in the virtual scene; determining transparency of a position mark that matches the sound source virtual object, according to a sound source distance between the first position and the second position, the position mark identifying the second position of the sound source virtual object; and displaying, on an interaction interface of the application client, the position mark of the sound source virtual object according to the transparency.

公开(公告)号：US11994605B2

公开(公告)日：2024-05-28

申请号：US17600513

申请日：2020-03-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Rohith Mars ,  Srikanth Nagisetty ,  Chong Soon Lim ,  Hiroyuki Ehara ,  Akihisa Kawamura

IPC: G01S3/802 ,  G01S3/808 ,  H04R1/40

CPC classification number: G01S3/8027 ,  G01S3/8083 ,  H04R1/406

Abstract: Provided is a direction of arrival estimation device wherein: a calculation circuit calculates a frequency weighting factor for each of a plurality of frequency components of signals recorded in a microphone array, on the basis of the differences among unit vectors indicating the directions of the sound sources of each of the plurality of frequency components; and an estimation circuit estimates the direction of arrival of a signal from the sound source, on the basis of the frequency weighting factors.

公开(公告)号：US11906642B2

公开(公告)日：2024-02-20

申请号：US16145652

申请日：2018-09-28

Applicant: Silicon Laboratories Inc.

Inventor： Jere M. Knaappila

IPC: G01S3/808 ,  G01S3/74 ,  H04B1/20 ,  G01S5/04 ,  H04R1/10

CPC classification number: G01S3/8083 ,  G01S3/74 ,  G01S5/04 ,  H04B1/207 ,  H04R1/10

Abstract: Systems and methods are provided that may be implemented to modify information of an audio data transmission based on one or more measured signal reception and/or transmission characteristics of a radio frequency (RF) signal data transmission that contains or otherwise conveys the audio data transmission. The modified audio data may then be acoustically reproduced in analog form as sound waves. Examples of signal reception characteristics of a RF signal data transmission that may be measured and used as a basis for modifying information of audio data of an audio data transmission include, but are not limited to, time Difference of Arrival (TDOA), Angle of Arrival (AoA), measured received signal strength, etc. Example signal transmission characteristics of a RF signal that may be measured and used as a basis for modifying information of audio data include, but are not limited to, Angle of Departure (AoD).

公开(公告)号：US20190187264A1

公开(公告)日：2019-06-20

申请号：US16274450

申请日：2019-02-13

Applicant: ALIBABA GROUP HOLDING LIMITED

Inventor： NAN WANG ,  QIANG HE ,  ZHIJUN DU

IPC: G01S11/14 ,  G01S3/808 ,  G01S5/30 ,  G01S5/22 ,  G01S15/34

CPC classification number: G01S11/14 ,  G01S3/8083 ,  G01S5/22 ,  G01S5/30 ,  G01S15/34

Abstract: A method for determining a change in a distance, a location prompting method and an apparatus and a system thereof are provided. The method includes: sending, by a receiving terminal, a paring request to a server for the server to forward the paring request to a transmitting terminal, and to allocate a frequency band for the receiving terminal and the transmitting terminal after the transmitting terminal accepts the paring request; acquiring, by the receiving terminal, an acoustic wave signal of a frequency sent by the transmitting terminal, wherein the frequency is determined by the transmitting terminal based on the allocated frequency band; determining, by the receiving terminal, a change in the acquired acoustic wave signal; and determining, by the receiving terminal, a change in a distance between the transmitting terminal and the receiving terminal according to the change in the acquired acoustic wave signal.

公开(公告)号：US20180306889A1

公开(公告)日：2018-10-25

申请号：US15769273

申请日：2016-10-19

Applicant: DENSO CORPORATION

Inventor： Takeshi KOGA

IPC: G01S3/808 ,  B60W50/14 ,  B60R1/00

CPC classification number: G01S3/8083 ,  B60R1/00 ,  B60R21/00 ,  B60R2300/30 ,  B60W50/14 ,  B60W2420/42 ,  G01S7/527 ,  G01S15/025 ,  G01S15/931 ,  G08G1/0962 ,  G08G1/165 ,  G08G1/166

Abstract: An obstacle notification apparatus of the embodiment is mounted in a vehicle, and includes a probing result acquiring section that sequentially acquires reception intensity of a reflected wave corresponding to a probing wave reflected back by an object, the reflected wave being received by a probing wave transmitting and receiving apparatus transmitting the probing wave in a traveling direction of the vehicle and receiving the reflected wave; an obstacle determining section that determines whether or not an obstacle, which is an object presence of which a driver of the vehicle is to be notified of, is present in the traveling direction of the vehicle, by using the reception intensity of the reflected wave acquired by the probing result acquiring section; a notification processing section that performs a notification process for notifying the driver of the presence of the obstacle based on determination of the presence of the obstacle by the obstacle determining section; an image data acquiring section that acquires image data taken by a camera including, within an image taking range, an arrival range of the probing wave transmitted by the probing wave transmitting and receiving apparatus; and a noise element detecting section that detects presence of a noise element by analyzing the image data acquired by the image data acquiring section, the noise element being an element which is able to reflect the probing wave and which is preset as an element of which the driver need not be notified. The obstacle determining section determines whether or not the obstacle is present by using a less easily satisfied condition in a case where the noise element detecting section has detected the noise element than that used in a case where the noise element detecting section has not detected the noise element.

公开(公告)号：US10013998B2

公开(公告)日：2018-07-03

申请号：US15118239

申请日：2015-01-27

Applicant: SONY CORPORATION

Inventor： Atsuo Hiroe

IPC: G10L21/00 ,  G10L21/028 ,  G10L15/04 ,  G10L25/78 ,  G10L21/0388 ,  G10L25/93 ,  G10L21/0216 ,  G10L21/0308

CPC classification number: G10L21/028 ,  G01S3/8006 ,  G01S3/8083 ,  G10L15/04 ,  G10L21/0308 ,  G10L21/0388 ,  G10L25/78 ,  G10L25/93 ,  G10L2021/02166

Abstract: A device and a method for determining a speech segment with a high degree of accuracy from a sound signal in which different sounds coexist are provided. Directional points indicating the direction of arrival of the sound signal are connected in the temporal direction, and a speech segment is detected. In this configuration, pattern classification is performed in accordance with directional characteristics with respect to the direction of arrival, and a directionality pattern and a null beam pattern are generated from the classification results. Also, an average null beam pattern is also generated by calculating the average of the null beam patterns at a time when a non-speech-like signal is input. Further, a threshold that is set at a slightly lower value than the average null beam pattern is calculated as the threshold to be used in detecting the local minimum point corresponding to the direction of arrival from each null beam pattern, and a local minimum point equal to or lower than the threshold is determined to be the point corresponding to the direction of arrival.

公开(公告)号：US20180081372A1

公开(公告)日：2018-03-22

申请号：US15704404

申请日：2017-09-14

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： David THOENNESSEN ,  Martin SCHWEIGLER ,  Oliver NEY ,  Mirko KUGELMEIER

IPC: G05D1/02 ,  G01S5/02 ,  G05D1/00

CPC classification number: G05D1/0276 ,  G01S3/8034 ,  G01S3/8083 ,  G01S5/0263 ,  G01S5/28 ,  G01S11/16 ,  G05D1/0088 ,  G05D1/0223 ,  G05D1/0255 ,  G05D1/028 ,  G05D2201/0216

Abstract: A conveying system having automatic tethering function comprises an electrically driven mobile conveying device and a portable transmitting device (“beacon”). The conveying device automatically follows the transmitting device at a predetermined distance. The conveying and transmitting devices are coupled together via a radio link and ultrasound. The transmitting device transmits a radio, and, in time correlation, an ultrasound signal. The ultrasound signal is received by the conveying device in a spatially resolved manner, and an automatic tethering function is implemented based on the radio and ultrasound signals.

公开(公告)号：US09836137B2

公开(公告)日：2017-12-05

申请号：US14893624

申请日：2014-05-27

Applicant: PNF CO., LTD

Inventor： Jae Jun Lee

IPC: G06F3/0354 ,  G01S5/18 ,  G06F3/038 ,  G06F1/16 ,  G01S3/808

CPC classification number: G06F3/03545 ,  G01S3/8083 ,  G01S5/18 ,  G06F1/16 ,  G06F1/1684 ,  G06F3/0383

Abstract: Disclosed are an ultrasonic wave receiver and a position information input apparatus comprising same. A signal generator and the ultrasonic wave receiver of the present invention both comprise a rechargeable battery therein whereby same are driven, and are coupled to a main body part when position information input is finished. The main body part comprises a large-capacity battery supplied and charged with a charging current from an external electronic device. Also, the main body part charges the signal generator and the ultrasonic wave receiver by supplying same with a charging current from the large-capacity battery when the signal generator and the ultrasonic wave receiver are coupled to the main body part. Accordingly, the position information input apparatus can easily be carried by coupling the signal generator and the ultrasonic wave receiver to main body part, and can maintain the signal generator and the ultrasonic wave receiver in charged state.