中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

47 records (took 0.027 seconds)

    JITTER BUFFER CONTROL BASED ON MONITORING OF DELAY JITTER AND CONVERSATIONAL DYNAMICS
    3.
    发明申请
    JITTER BUFFER CONTROL BASED ON MONITORING OF DELAY JITTER AND CONVERSATIONAL DYNAMICS 审中-公开
    基于延迟抖动和对流动态监测的抖动缓冲器控制

    公开(公告)号：US20170034026A1

    公开(公告)日：2017-02-02

    申请号：US15302945

    申请日：2015-04-09

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Kai LI ,  Xuejing SUN ,  Gary SPITTLE

    IPC: H04L12/26 ,  G10L25/93 ,  G10L15/08 ,  H04L29/06

    Abstract: Some implementations involve analyzing audio packets received during a time interval that corresponds with a conversation analysis segment to determine network jitter dynamics data and conversational interactivity data. The network jitter dynamics data may provide an indication of jitter in a network that relays the audio data packets. The conversational interactivity data may provide an indication of interactivity between participants of a conversation represented by the audio data. A jitter buffer size may be controlled according to the network jitter dynamics data and the conversational interactivity data. The time interval may include a plurality of talkspurts.

    Abstract translation: 一些实现涉及分析在与对话分析段对应的时间间隔期间接收的音频分组，以确定网络抖动动态数据和会话交互数据。 网络抖动动态数据可以提供中继音频数据分组的网络中的抖动指示。 会话交互数据可以提供由音频数据表示的会话的参与者之间的交互性的指示。 可以根据网络抖动动态数据和对话交互数据来控制抖动缓冲器大小。 时间间隔可以包括多个通话器。

    Packet Loss Concealment Apparatus and Method, and Audio Processing System
    4.
    发明申请
    Packet Loss Concealment Apparatus and Method, and Audio Processing System 审中-公开
    分组丢包隐藏装置和方法以及音频处理系统

    公开(公告)号：US20160148618A1

    公开(公告)日：2016-05-26

    申请号：US14899238

    申请日：2014-07-02

    Applicant: DOLBY INTERNATIONAL AB ,  DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Shen HUANG ,  Xuejing SUN ,  Heiko PURNHAGEN

    IPC: G10L19/005 ,  G10L19/008 ,  G10L19/16 ,  G10L19/02

    CPC classification number: G10L19/005 ,  G10L19/008 ,  G10L19/0212 ,  G10L19/167

    Abstract: The present application relates to packet loss concealment apparatus and method, and audio processing system. According to an embodiment, the packet loss concealment apparatus is provided for concealing packet losses in a stream of audio packets, each audio packet comprising at least one audio frame in transmission format comprising at least one monaural component and at least one spatial component. The packet loss concealment apparatus may comprises a first concealment unit for creating the at least one monaural component for a lost frame in a lost packet and a second concealment unit for creating the at least one spatial component for the lost frame. According to the embodiment, spatial artifacts such as incorrect angle and diffuseness may be avoided as far as possible in PLC for multi-channel spatial or sound field encoded audio signals.

    Abstract translation: 本申请涉及分组丢失隐藏装置和方法以及音频处理系统。 根据一个实施例，分组丢失隐藏设备被提供用于在音频分组流中隐藏分组丢失，每个音频分组包括至少一个包括至少一个单声道分量和至少一个空间分量的传输格式的音频帧。 分组丢失隐藏装置可以包括：用于为丢失分组中的丢失帧创建至少一个单声道分量的第一隐藏单元和用于为丢失帧创建至少一个空间分量的第二隐藏单元。 根据实施例，可以尽可能避免在多通道空间或声场编码音频信号的PLC中的空间伪像，例如不正确的角度和扩散度。

    ACOUSTIC ECHO MITIGATION APPARATUS AND METHOD, AUDIO PROCESSING APPARATUS AND VOICE COMMUNICATION TERMINAL
    5.
    发明申请
    ACOUSTIC ECHO MITIGATION APPARATUS AND METHOD, AUDIO PROCESSING APPARATUS AND VOICE COMMUNICATION TERMINAL 有权
    声音减速装置和方法，音频处理装置和语音通信终端

    公开(公告)号：US20160019909A1

    公开(公告)日：2016-01-21

    申请号：US14775038

    申请日：2014-03-10

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Dong SHI ,  Xuejing SUN ,  Glenn N. DICKINS

    IPC: G10L21/0232 ,  G10L25/60 ,  H04M9/08 ,  G10L25/21

    CPC classification number: G10L21/0232 ,  G10L21/0208 ,  G10L25/21 ,  G10L25/60 ,  G10L2021/02082 ,  G10L2021/02163 ,  H04M9/082

    Abstract: The present application provides an acoustic echo mitigation apparatus and method, an audio processing apparatus and a voice communication terminal. According to an embodiment, an acoustic echo mitigation apparatus is provided, including: an acoustic echo canceller for cancelling estimated acoustic echo from a microphone signal and outputting an error signal; a residual echo estimator for estimating residual echo power; and an acoustic echo suppressor for further suppressing residual echo and noise in the error signal based on the residual echo power and noise power. Here, the residual echo estimator is configured to be continuously adaptive to power change in the error signal. According to the embodiments of the present application, the acoustic echo mitigation apparatus and method can, at least, be well adaptive to the change of power of the error signal after the AEC processing, such as that caused by change of double-talk status, echo path properties, noise level and etc.

    Abstract translation: 本申请提供了一种声学回声减轻装置和方法，音频处理装置和语音通信终端。 根据一个实施例，提供了一种声学回声消除装置，包括：声学回声消除器，用于从麦克风信号中消除估计的声学回声并输出误差信号; 用于估计残余回波功率的残余回波估计器; 以及声学回波抑制器，用于基于残余回波功率和噪声功率进一步抑制误差信号中的残余回波和噪声。 这里，残差回波估计器被配置为连续地适应于误差信号中的功率变化。 根据本申请的实施例，声学回声缓解装置和方法至少可以很好地适应于AEC处理之后的误差信号的功率变化，例如由双方通话状态的改变引起的， 回波路径属性，噪声水平等

    POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT
    6.
    发明申请
    POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT 有权

    公开(公告)号：US20250104728A1

    公开(公告)日：2025-03-27

    申请号：US18906046

    申请日：2024-10-03

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Xuejing SUN ,  Glenn N. DICKINS

    IPC: G10L21/0364 ,  G10K11/16 ,  G10L21/0224 ,  G10L21/0316 ,  G10L21/034 ,  G10L25/78 ,  H03G3/30 ,  H03G3/32

    Abstract: A method, an apparatus, and logic to post-process raw gains determined by input processing to generate post-processed gains, comprising using one or both of delta gain smoothing and decision-directed gain smoothing. The delta gain smoothing comprises applying a smoothing filter to the raw gain with a smoothing factor that depends on the gain delta: the absolute value of the difference between the raw gain for the current frame and the post-processed gain for a previous frame. The decision-directed gain smoothing comprises converting the raw gain to a signal-to-noise ratio, applying a smoothing filter with a smoothing factor to the signal-to-noise ratio to calculate a smoothed signal-to-noise ratio, and converting the smoothed signal-to-noise ratio to determine the second smoothed gain, with smoothing factor possibly dependent on the gain delta.

    FILTER COEFFICIENT UPDATING IN TIME DOMAIN FILTERING
    8.
    发明申请
    FILTER COEFFICIENT UPDATING IN TIME DOMAIN FILTERING 审中-公开

    公开(公告)号：US20180254053A1

    公开(公告)日：2018-09-06

    申请号：US15753070

    申请日：2016-09-15

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Dong SHI ,  Xuejing SUN

    IPC: G10L25/18 ,  H03H21/00 ,  H03H17/02

    CPC classification number: G10L25/18 ,  G10L25/48 ,  H03H17/0227 ,  H03H17/0294 ,  H03H21/0025 ,  H03H21/0043

    Abstract: Example embodiments disclosed herein relate to filter coefficient updating in time domain filtering. A method of processing an audio signal is disclosed. The method includes obtaining a predetermined number of target gains for a first portion of the audio signal by analyzing the first portion of the audio signal. Each of the target gains is corresponding to a linear subband of the audio signal. The method also includes determining a filter coefficients for time domain filtering the first portion of the audio signal so as to approximate a frequency response given by the target gains. The filter coefficients are determined by iteratively selecting at least one target gain from the target gains and updating the filter coefficient based on the selected at least one target gain. Corresponding system and computer program product for processing an audio signal are also disclosed.

    AUDIO SIGNAL PROCESSING BASED ON REMOTE USER CONTROL
    9.
    发明申请
    AUDIO SIGNAL PROCESSING BASED ON REMOTE USER CONTROL 审中-公开

    公开(公告)号：US20180167515A1

    公开(公告)日：2018-06-14

    申请号：US15573049

    申请日：2016-05-26

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Dong SHI ,  Xuejing SUN ,  Zhiwei SHUANG

    IPC: H04M3/56 ,  H04M9/08 ,  G10L21/02 ,  H04M1/247

    CPC classification number: H04M3/568 ,  G10L21/02 ,  H04M1/2471 ,  H04M1/2477 ,  H04M3/563 ,  H04M9/082 ,  H04M2203/053 ,  H04N7/147 ,  H04N7/15

    Abstract: Example embodiments disclosed herein relate to audio signal processing based on remote user control. A method of processing an audio signal in an audio sender device is disclosed. The method includes receiving, at a current device, a control parameter from a remote device, the control parameter being generated based on a user input of the remote device and specifying a user preference for an audio signal to be transmitted to the remote device. The method also includes processing the audio signal based on the received control parameter and transmitting the processed audio signal to the remote device. Corresponding computer program product of processing an audio signal and corresponding device are also disclosed. Corresponding method in an audio receiver device and computer program product of processing an audio signal as well as corresponding device are also disclosed.

Patent Agency Ranking