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1. 发明授权

US10334384B2 Scheduling playback of audio in a virtual acoustic space 有权
公开(公告)号：US10334384B2
公开(公告)日：2019-06-25
申请号：US15547441
申请日：2016-02-03
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Xuejing Sun , Richard J. Cartwright , Michael P. Hollier , Michael Eckert
IPC分类号： H04R5/02 , H04S7/00 , H04M3/56 , G10L21/043 , H04R27/00 , H04L12/18 , H04M3/42
摘要： A method for processing audio data, the method comprising: receiving audio data corresponding to a plurality of instances of audio, including at least one of: (a) audio data from multiple endpoints, recorded separately or (b) audio data from a single endpoint corresponding to multiple talkers and including spatial information for each of the multiple talkers; rendering the audio data in a virtual acoustic space such that each of the instances of audio has a respective different virtual position in the virtual acoustic space; and scheduling the instances of audio to be played back with a playback overlap between at least two of the instances of audio, wherein the scheduling is performed, at least in part, according to a set of perceptually-motivated rules.

2. 发明授权

US10332540B2 Filter coefficient updating in time domain filtering 有权
公开(公告)号：US10332540B2
公开(公告)日：2019-06-25
申请号：US15753070
申请日：2016-09-15
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Dong Shi , Xuejing Sun
IPC分类号： H03H17/02 , G10L25/18 , G10L25/48 , H03H21/00
摘要： 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.

3. 发明授权

US10200804B2 Video content assisted audio object extraction 有权
公开(公告)号：US10200804B2
公开(公告)日：2019-02-05
申请号：US15553536
申请日：2016-02-24
申请人： Dolby Laboratories Licensing Corporation
发明人： Lianwu Chen , Xuejing Sun , Lie Lu
IPC分类号： H04S3/00 , G10L19/20 , G06K9/00 , H04S3/02
摘要： Embodiments of the present invention relate to video content assisted audio object extraction. A method of audio object extraction from channel-based audio content is disclosed. The method comprises extracting at least one video object from video content associated with the channel-based audio content, and determining information about the at least one video object. The method further comprises extracting from the channel-based audio content an audio object to be rendered as an upmixed audio signal based on the determined information. Corresponding system and computer program product are also disclosed.

4. 发明授权

US09916837B2 Methods and apparatuses for transmitting and receiving audio signals 有权
公开(公告)号：US09916837B2
公开(公告)日：2018-03-13
申请号：US14384644
申请日：2013-03-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Huiqun Deng , Xuejing Sun
IPC分类号： G10L19/16 , H04L29/06 , G10L19/02 , G10L19/005
CPC分类号： G10L19/167 , G10L19/005 , G10L19/02 , H04L65/602 , H04L65/607
摘要： Methods and corresponding apparatuses for transmitting and receiving audio signals are described. A transformation is performed on the audio signals in units of frame in order to obtain transformed audio data of each frame, said transformed audio data consisting of multiple signal components in the frequency domain. These signal components of each frame are distributed into multiple adjacent packets in order to generate packets in which signal components distributed from multiple frames are interleaved. Subsequently, the generated packets are transmitted. Accordingly, in case that packet loss occurs during transmission, the audio signals can be recovered based on the received signal components without consuming additional bandwidth. Therefore, robustness against packet loss can be achieved with little overhead.

5. 发明授权

US09668080B2 Method for generating a surround sound field, apparatus and computer program product thereof 有权
公开(公告)号：US09668080B2
公开(公告)日：2017-05-30
申请号：US14899505
申请日：2014-06-17
申请人： Dolby Laboratories Licensing Corporation
发明人： Xuejing Sun , Bin Cheng , Sen Xu , Zhiwei Shuang , Jun Wang
IPC分类号： H04R5/02 , H04S7/00 , H04R29/00 , H04S3/02
CPC分类号： H04S7/301 , H04R29/002 , H04R29/005 , H04R2430/20 , H04S3/02 , H04S7/308 , H04S2400/03 , H04S2400/15 , H04S2420/01 , H04S2420/11
摘要： Embodiments of the present invention relate to adaptive audio content generation. Specifically, a method for generating adaptive audio content is provided. The method comprises extracting at least one audio object from channel-based source audio content, and generating the adaptive audio content at least partially based on the at least one audio object. Corresponding system and computer program product are also disclosed.

6. 发明授权

US09626970B2 Speaker identification using spatial information 有权
公开(公告)号：US09626970B2
公开(公告)日：2017-04-18
申请号：US14971401
申请日：2015-12-16
申请人： Dolby Laboratories Licensing Corporation
发明人： Shen Huang , Xuejing Sun
IPC分类号： G10L17/00 , G10L15/30 , G10L25/24 , G10L25/78
CPC分类号： G10L17/005 , G10L15/30 , G10L17/00 , G10L17/04 , G10L25/03 , G10L25/24 , G10L25/78 , H04M3/568 , H04M2201/41 , H04M2203/6045
摘要： Embodiments of the present invention relate to speaker identification using spatial information. A method of speaker identification for audio content being of a format based on multiple channels is disclosed. The method comprises extracting, from a first audio clip in the format, a plurality of spatial acoustic features across the multiple channels and location information, the first audio clip containing voices from a speaker, and constructing a first model for the speaker based on the spatial acoustic features and the location information, the first model indicating a characteristic of the voices from the speaker. The method further comprises identifying whether the audio content contains voices from the speaker based on the first model. Corresponding system and computer program product are also disclosed.

7. 发明申请

US20170103761A1 Adaptive Forward Error Correction Redundant Payload Generation 审中-公开
公开(公告)号：US20170103761A1
公开(公告)日：2017-04-13
申请号：US15287953
申请日：2016-10-07
申请人： Dolby Laboratories Licensing Corporation
发明人： Xuejing Sun , Kai Li , Mark S. Vinton , Shen Huang
IPC分类号： G10L19/005 , G10L19/02 , G10L19/028
CPC分类号： G10L19/005 , G10L19/0204 , G10L19/028
摘要： A method of encoding audio information for forward error correction reconstruction of a transmitted audio stream over a lossy packet switched network, the method including the steps of: (a) dividing the audio stream into audio frames; (b) determining a series of corresponding audio frequency bands for the audio frames; (c) determining a series of power envelopes for the frequency bands; (d) encoding the envelopes as a low bit rate version of the audio frame in a redundant transmission frame.

8. 发明授权

US09525845B2 Near-end indication that the end of speech is received by the far end in an audio or video conference 有权
标题翻译：在音频或视频会议中远端接收到语音结束的近端指示
公开(公告)号：US09525845B2
公开(公告)日：2016-12-20
申请号：US14426134
申请日：2013-09-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Dong Shi , Xuejing Sun , Kai Li , Shen Huang , Harald Mundt , Heiko Purnhagen , Glenn Dickins
IPC分类号： H04N7/14 , H04N7/15
CPC分类号： H04N7/147 , H04M3/569 , H04M9/082 , H04M2201/12 , H04M2201/14 , H04M2201/38 , H04M2203/258 , H04M2203/352 , H04N7/15
摘要： Embodiments of client device and method for audio or video conferencing are described. An embodiment includes an offset detecting unit, a configuring unit, an estimator and an output unit. The offset detecting unit detects an offset of speech input to the client device. The configuring unit determines a voice latency from the client device to every far end. The estimator estimates a time when a user at the far end perceives the offset based on the voice latency. The output unit outputs a perceivable signal indicating that a user at the far end perceives the offset based on the time estimated for the far end. The perceivable signal is helpful to avoid collision between parties.
摘要翻译：描述用于音频或视频会议的客户端设备和方法的实施例。实施例包括偏移检测单元，配置单元，估计器和输出单元。偏移检测单元检测输入到客户端设备的语音偏移。配置单元确定从客户端设备到每个远端的语音延迟。估计器估计在远端的用户基于语音延迟感知到偏移的时间。输出单元输出可感知的信号，指示远端的用户基于为远端估计的时间感知偏移。可感知的信号有助于避免各方之间的冲突。

9. 发明授权

US09282419B2 Audio processing method and audio processing apparatus 有权
标题翻译：音频处理方法和音频处理装置
公开(公告)号：US09282419B2
公开(公告)日：2016-03-08
申请号：US14365072
申请日：2012-12-12
申请人： Dolby Laboratories Licensing Corporation
发明人： Xuejing Sun , Glenn Dickins , Huiqun Deng , Zhiwei Shuang , Bin Cheng
IPC分类号： H04S5/00 , G10L21/0364 , G10L19/26 , H04S7/00
CPC分类号： H04S5/00 , G10L19/26 , G10L21/0364 , H04S7/302
摘要： An audio processing method and an audio processing apparatus are described. A mono-channel audio signal is transformed into a plurality of first subband signals. Proportions of a desired component and a noise component are estimated in each of the subband signals. Second subband signals corresponding respectively to a plurality of channels are generated from each of the first subband signals. Each of the second subband signals comprises a first component and a second component obtained by assigning a spatial hearing property and a perceptual hearing property different from the spatial hearing property to the desired component and the noise component in the corresponding first subband signal respectively, based on a multi-dimensional auditory presentation method. The second subband signals are transformed into signals for rendering with the multi-dimensional auditory presentation method. By assigning different hearing properties to desired sound and noise, the intelligibility of the audio signal can be improved.
摘要翻译：描述了音频处理方法和音频处理装置。单声道音频信号被变换成多个第一子带信号。在每个子带信号中估计所需分量和噪声分量的比例。从第一子带信号中的每一个产生分别对应于多个信道的第二子带信号。每个第二子带信号包括第一分量和第二分量，该第一分量和第二分量通过分别将空间听觉特性和不同于空间听觉特性的感知听觉特性分配给相应的第一子带信号中的期望分量和噪声分量，基于多维听觉呈现方法。第二子带信号被转换成用于用多维听觉呈现方法渲染的信号。通过将不同的听觉属性分配给期望的声音和噪声，可以提高音频信号的可懂度。

10. 发明申请

US20150081283A1 HARMONICITY ESTIMATION, AUDIO CLASSIFICATION, PITCH DETERMINATION AND NOISE ESTIMATION 有权
标题翻译：谐波估计，音频分类，判定和噪声估计
公开(公告)号：US20150081283A1
公开(公告)日：2015-03-19
申请号：US14384356
申请日：2013-03-21
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Xuejing Sun , Zhiwei Shuang , Shen Huang
IPC分类号： G10L25/78
CPC分类号： G10L25/78 , G10L25/18 , G10L25/81 , G10L25/84
摘要： Embodiments are described for harmonicity estimation, audio classification, pitch determination and noise estimation. Measuring harmonicity of an audio signal includes calculation a log amplitude spectrum of audio signal. A first spectrum is derived by calculating each component of the first spectrum as a sum of components of the log amplitude spectrum on frequencies. In linear frequency scale, the frequencies are odd multiples of the component's frequency of the first spectrum. A second spectrum is derived by calculating each component of the second spectrum as a sum of components of the log amplitude spectrum on frequencies. In linear frequency scale, the frequencies are even multiples of the component's frequency of the second spectrum. A difference spectrum is derived subtracting the first spectrum from the second spectrum. A measure of harmonicity is generated as a monotonically increasing function of the maximum component of the difference spectrum within predetermined frequency range.
摘要翻译：描述了用于谐波估计，音频分类，音调确定和噪声估计的实施例。测量音频信号的谐波包括计算音频信号的对数幅度谱。通过将第一频谱的每个分量计算为频率上的对数幅度谱的分量的和来导出第一频谱。在线性频率标度中，频率是第一个频谱的分量频率的奇数倍。通过将第二频谱的每个分量计算为频率上的对数幅度谱的分量的和来导出第二频谱。在线性频率标度中，频率是第二个频谱的分量频率的偶数倍。导出从第二个频谱减去第一个频谱的差分谱。产生谐波度的度量作为预定频率范围内的差分频谱的最大分量的单调递增函数。

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