公开(公告)号：US11264045B2

公开(公告)日：2022-03-01

申请号：US16564532

申请日：2019-09-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dong Shi ,  Glenn N. Dickins ,  David Gunawan ,  Xuejing Sun

IPC: G10L21/0232 ,  G10L21/0208 ,  H04M9/08 ,  G10L21/028 ,  G10L25/21

Abstract: In an audio processing system (300), a filtering section (350, 400): receives subband signals (410, 420, 430) corresponding to audio content of a reference signal (301) in respective frequency subbands; receives subband signals (411, 421, 431) corresponding to audio content of a response signal (304) in the respective subbands; and forms filtered inband references (412, 422, 432) by applying respective filters (413, 423, 433) to the subband signals of the reference signal. For a frequency subband: filtered crossband references (424, 425) are formed by multiplying, by scalar factors (426, 427), filtered inband references of other subbands; a composite filtered reference (428) is formed by summing the filtered inband reference of the subband (422) and the filtered crossband references; a residual signal (429) is computed as a difference between the composite filtered reference and the subband signal of the response signal corresponding to the subband; and the scalar factors and the filter applied to the subband signal of the reference signal corresponding to the subband are adjusted based on the residual signal.

公开(公告)号：US20210037319A1

公开(公告)日：2021-02-04

申请号：US16929215

申请日：2020-07-15

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Carlos Medaglia Dyonisio ,  David Gunawan

IPC: H04R5/04 ,  H04R3/00 ,  H04R3/12 ,  H04S7/00 ,  G10L15/08 ,  G06N20/00

Abstract: Methods and systems for performing at least one audio activity (e.g., conducting a phone call or playing music or other audio content) in an environment including by determining an estimated location of a user in the environment in response to sound uttered by the user (e.g., a voice command), and controlling the audio activity in response to determining the estimated user location. The environment may have zones which are indicated by a zone map and estimation of the user location may include estimating in which of the zones the user is located. The audio activity may be performed using microphones and loudspeakers which are implemented in or coupled to smart audio devices.

公开(公告)号：US10825464B2

公开(公告)日：2020-11-03

申请号：US16063225

申请日：2016-12-15

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dong Shi ,  David Gunawan ,  Glenn N. Dickins

IPC: G10L21/0264 ,  G10L21/0208 ,  G10L25/21 ,  G10L25/51 ,  H04M3/56 ,  G10L21/0324 ,  A61B7/00 ,  G10L21/0232

Abstract: Example embodiments disclosed herein relate to audio signal processing. A method of processing an audio signal is disclosed. The method includes detecting, based on a power distribution of the audio signal, a type of content of a frame of the audio signal, generating a first gain based on a sound level of the frame for adjusting the sound level, processing the audio signal by applying the first gain to the frame; and in response to the type of content being detected to be a breath sound, generating a second gain for mitigating the breath sound and processing the audio signal by applying the second gain to the frame. Corresponding system and computer program product are also disclosed.

公开(公告)号：US10334362B2

公开(公告)日：2019-06-25

申请号：US15803456

申请日：2017-11-03

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Dong Shi ,  Andrew Border ,  David Gunawan

IPC: H04R3/02 ,  H04R29/00 ,  G10L21/0232 ,  H04R3/04 ,  H04M3/56 ,  H04N7/14 ,  G10L21/0208 ,  H04M9/08 ,  H04R27/00

Abstract: Systems and methods are described for analyzing and resolving feedback caused by having multiple audio links in a conference room. An audio system may detect the presence of duplicated audio caused by multiple audio links in the conference room. Marker signals may be injected into the conference room or over the network in response to detecting the duplicated audio. Echoes of the marker signals may be received, and the system may determine which case corresponds to the detected duplicated audio based on the received echo of the marker signals. Based on the determined case, operation of at least one of the speaker and the microphone may be modified. After the modification, audio playback in the conference room may be monitored to verify that far end audio playback is taking place and that the duplicated audio has been resolved.

公开(公告)号：US20180366136A1

公开(公告)日：2018-12-20

申请号：US16061771

申请日：2016-12-14

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dong Shi ,  David Gunawan ,  Glenn N. Dickins

IPC: G10L21/0232 ,  G10L25/18 ,  G10L25/72

Abstract: Example embodiments disclosed herein relate to audio signal processing. A method of indicating a presence of a nuisance in an audio signal is disclosed. The method includes determining a probability of the presence of the nuisance in a frame of the audio signal based on a feature of the audio signal, the nuisance representing an unwanted sound made by a user, in response to the probability of the presence of the nuisance exceeding a threshold, tracking the audio signal based on a metric over a plurality of frames following the frame, determining, based on the tracking, that the presence of the nuisance is to be indicated to the user, and in response to the determination, presenting to the user a notification of the presence of the nuisance. Corresponding system and computer program product are also disclosed.

公开(公告)号：US09407869B2

公开(公告)日：2016-08-02

申请号：US14435698

申请日：2013-10-11

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Erwin Goesnar ,  David Gunawan ,  Glenn N. Dickins

IPC: H04N7/15 ,  H04L12/18 ,  H04B11/00

CPC classification number: H04N7/15 ,  H04B11/00 ,  H04L12/1818 ,  H04L12/1827

Abstract: A system and method for initiating conference calls with external devices are disclosed. Call participants are sent conference invitation and conference information regarding the designated conference call. This conference information is stored on the participant's external device. When the participants arrive at a conference call location having a conferencing device, the conferencing device is capable of communicating with the external device, initiating communications, exchanging conference information. If the participant is verified and/or authorized, the conference system may send the IP address of the conference device to the conference system to initiate the conference call. In one embodiment, the conference device uses an ultrasound acoustic communication band to initiate the call with the external device on a semi-automated basis. An acoustic signature comprising a pilot sequence for communications synchronization may be generated to facilitate the call. Audible and aesthetic acoustic protocols may also be employed.

Abstract translation: 公开了一种用外部设备发起电话会议的系统和方法。 呼叫参与者发送有关指定电话会议的会议邀请和会议信息。 该会议信息存储在参与者的外部设备上。 当参与者到达具有会议设备的会议呼叫位置时，会议设备能够与外部设备通信，发起通信，交换会议信息。 如果参与者被验证和/或授权，则会议系统可以将会议设备的IP地址发送到会议系统以发起会议呼叫。 在一个实施例中，会议设备使用超声波通信频带在半自动化的基础上与外部设备发起呼叫。 可以生成包括用于通信同步的导频序列的声学签名以便于呼叫。 还可以使用听觉和美学声学协议。

公开(公告)号：US09349384B2

公开(公告)日：2016-05-24

申请号：US14428419

申请日：2013-09-11

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： David Gunawan ,  Glenn N. Dickins

IPC: G10L21/034 ,  G10L21/0324 ,  H03G3/32 ,  G10L21/0272

CPC classification number: G10L21/0324 ,  G10L21/0272 ,  G10L21/034 ,  H03G3/32

Abstract: In some embodiments, a method for adaptive control of gain applied to an audio signal, including steps of analyzing segments of the signal to identify audio objects (e.g., voices of participants in a voice conference); storing information regarding each distinct identified object; using at least some of the information to determine at least one of a target gain, or a gain change rate for reaching a target gain, for each identified object; and applying gain to segments of the signal indicative of an identified object such that the gain changes (typically, at the gain change rate for the object) from an initial gain to the target gain for the object. The information stored may include a scene description. Aspects of the invention include a system configured (e.g., programmed) to perform any embodiment of the inventive method.

Abstract translation: 在一些实施例中，一种用于对应用于音频信号的增益进行自适应控制的方法，包括分析信号的段以识别音频对象（例如语音会议中的参与者的语音）的步骤; 存储关于每个不同的识别对象的信息; 使用所述信息中的至少一些来为每个识别的对象确定目标增益或用于达到目标增益的增益变化率中的至少一个; 以及将增益应用于指示所识别的对象的信号的段，使得所述增益从所述对象的初始增益改变到所述目标增益（通常以所述对象的增益变化率）改变。 存储的信息可以包括场景描述。 本发明的方面包括配置（例如，被编程）以执行本发明方法的任何实施例的系统。

公开(公告)号：US20240163611A1

公开(公告)日：2024-05-16

申请号：US18409162

申请日：2024-01-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Carlos Eduardo Medaglia Dyonisio ,  David Gunawan

IPC: H04R5/04 ,  G06N20/00 ,  G10L15/06 ,  G10L15/08 ,  G10L15/16 ,  G10L15/22 ,  H04R1/40 ,  H04R3/00 ,  H04R3/12 ,  H04S7/00

CPC classification number: H04R5/04 ,  G06N20/00 ,  G10L15/063 ,  G10L15/08 ,  G10L15/16 ,  G10L15/22 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/12 ,  H04S7/303 ,  G10L2015/088 ,  G10L2015/223 ,  G10L2015/225

Abstract: Methods and systems for performing at least one audio activity (e.g., conducting a phone call or playing music or other audio content) in an environment including by determining an estimated location of a user in the environment in response to sound uttered by the user (e.g., a voice command), and controlling the audio activity in response to determining the estimated user location. The environment may have zones which are indicated by a zone map and estimation of the user location may include estimating in which of the zones the user is located. The audio activity may be performed using microphones and loudspeakers which are implemented in or coupled to smart audio devices.

公开(公告)号：US11677879B2

公开(公告)日：2023-06-13

申请号：US17691966

申请日：2022-03-10

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Kai Li ,  David Gunawan ,  Feng Deng ,  Qianqian Fang

IPC: H04M3/56 ,  G10L25/48

CPC classification number: H04M3/568 ,  G10L25/48

Abstract: Some disclosed teleconferencing methods may involve detecting a howl state during a teleconference. The teleconference may involve two or more teleconference client locations and a teleconference server. The teleconference server may be configured for providing full-duplex audio connectivity between the teleconference client locations. The howl state may be a state of acoustic feedback involving two or more teleconference devices in a teleconference client location. Detecting the howl state may involve an analysis of both spectral and temporal characteristics of teleconference audio data. Some disclosed teleconferencing methods may involve determining which client location is causing the howl state. Some such methods may involve mitigating the howl state and/or sending a howl state detection message.

公开(公告)号：US11017793B2

公开(公告)日：2021-05-25

申请号：US16061771

申请日：2016-12-14

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Dong Shi ,  David Gunawan ,  Glenn N. Dickins

IPC: G10L21/02 ,  G10L21/0232 ,  G10L25/72 ,  G10L25/18 ,  G10L21/0208

Abstract: Example embodiments disclosed herein relate to audio signal processing. A method of indicating a presence of a nuisance in an audio signal is disclosed. The method includes determining a probability of the presence of the nuisance in a frame of the audio signal based on a feature of the audio signal, the nuisance representing an unwanted sound made by a user, in response to the probability of the presence of the nuisance exceeding a threshold, tracking the audio signal based on a metric over a plurality of frames following the frame, determining, based on the tracking, that the presence of the nuisance is to be indicated to the user, and in response to the determination, presenting to the user a notification of the presence of the nuisance. Corresponding system and computer program product are also disclosed.