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1. 发明授权

US11277707B2 Spatial audio signal manipulation 有权
公开(公告)号：US11277707B2
公开(公告)日：2022-03-15
申请号：US16938561
申请日：2020-07-24
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Dirk Jeroen Breebaart , Antonio Mateos Sole , Heiko Purnhagen , Nicolas R. Tsingos
IPC分类号： H04S7/00 , H04R5/02 , H04S3/00
摘要： Described herein is a method (30) of rendering an audio signal (17) for playback in an audio environment (27) defined by a target loudspeaker system (23), the audio signal (17) including audio data relating to an audio object and associated position data indicative of an object position. Method (30) includes the initial step (31) of receiving the audio signal (17). At step (32) loudspeaker layout data for the target loudspeaker system (23) is received. At step (33) control data is received that is indicative of a position modification to be applied to the audio object in the audio environment (27). At step (38) in response to the position data, loudspeaker layout data and control data, rendering modification data is generated. Finally, at step (39) the audio signal (17) is rendered with the rendering modification data to output the audio signal (17) with the audio object at a modified object position that is between loudspeakers within the audio environment (27).

2. 发明授权

US10522163B2 System for maintaining reversible dynamic range control information associated with parametric audio coders 有权
公开(公告)号：US10522163B2
公开(公告)日：2019-12-31
申请号：US16514533
申请日：2019-07-17
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeffrey Riedmiller , Karl J. Roeden , Kristofer Kjoerling , Heiko Purnhagen , Vinay Melkote , Leif Sehlstrom
IPC分类号： G10L19/24 , G10L19/008 , G10L19/16 , G10L19/18
摘要： On the basis of a bitstream (P), an n-channel audio signal (X) is reconstructed by deriving an m-channel core signal (Y) and multichannel coding parameters (a) from the bitstream, where 1≤m

3. 发明授权

US09530422B2 Bitstream syntax for spatial voice coding 有权
标题翻译：空间语音编码的位流语法
公开(公告)号：US09530422B2
公开(公告)日：2016-12-27
申请号：US14392287
申请日：2014-06-26
申请人： Dolby Laboratories Licensing Corporation , DOLBY INTERNATIONAL AB
发明人： Janusz Klejsa , Leif Jonas Samuelsson , Heiko Purnhagen , Glenn N. Dickins
IPC分类号： G10L19/00 , G10L19/008 , G10L19/032 , G10L19/002 , G10L19/02 , G10L19/035
CPC分类号： G10L19/008 , G10L19/002 , G10L19/0204 , G10L19/0212 , G10L19/032 , G10L19/035
摘要： An encoding system (100) encodes a first (E1) and further (E2, E3) audio signals as a layered bitstream (B), wherein a quantizer for each frequency band of each signal is selected using a rate allocation rule based on signal-specific rate allocation data, a spectral envelope of the signal and a reference level (EnvE1Max), which is determined based on the spectral envelope of the first signal and is not necessarily included in the bitstream. Further disclosed is a decoding system for reconstructing the audio signals based on the bitstream. In embodiments, the bitstream has a basic layer (BE1), which contains data that enable decoding of the first audio signal, and a spatial layer (Bspatial) facilitating decoding of the further audio signal(s). In embodiments, the encoding system prepares the bitstream subject to a basic-layer bitrate constraint and a total bitrate constraint.
摘要翻译：编码系统（100）将第一（E1）和另外（E2，E3）音频信号编码为分层比特流（B），其中使用基于信号的比特率的速率分配规则来选择每个信号的每个频带的量化器，特定速率分配数据，信号的频谱包络和基于第一信号的频谱包络确定的参考电平（EnvE1Max），并且不一定包括在比特流中。还公开了一种用于基于比特流重建音频信号的解码系统。在实施例中，比特流具有包含能够对第一音频信号进行解码的数据的基本层（BE1）以及便于对其它音频信号进行解码的空间层（B空间）。在实施例中，编码系统根据基本层比特率约束和总比特率约束准备比特流。

4. 发明授权

US09460729B2 Layered approach to spatial audio coding 有权
标题翻译：分层方法进行空间音频编码
公开(公告)号：US09460729B2
公开(公告)日：2016-10-04
申请号：US14427589
申请日：2013-09-10
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Glenn Dickins , Heiko Purnhagen , Leif Jonas Samuelsson
IPC分类号： G10L19/02 , G10L19/012 , H04M3/56 , G10L21/0208 , G10L19/008 , G10L21/0216
CPC分类号： G10L19/012 , G10L19/008 , G10L19/02 , G10L19/0208 , G10L19/032 , G10L19/22 , G10L19/24 , G10L21/02 , G10L21/0208 , G10L21/0216 , H04M3/56
摘要： The invention provides a layered audio coding format with a monophonic layer and at least one sound field layer. A plurality of audio signals is decomposed, in accordance with decomposition parameters controlling the quantitative properties of an orthogonal energy-compacting transform, into rotated audio signals. Further, a time-variable gain profile specifying constructively how the rotated audio signals may be processed to attenuate undesired audio content is derived. The monophonic layer may comprise one of the rotated signals and the gain profile. The sound field layer may comprise the rotated signals and the decomposition parameters. In one embodiment, the gain profile comprises a cleaning gain profile with the main purpose of eliminating non-speech components and/or noise. The gain profile may also comprise mutually independent broadband gains. Because signals in the audio coding format can be mixed with a limited computational effort, the invention may advantageously be applied in a tele-conferencing application.
摘要翻译：本发明提供了具有单声道层和至少一个声场层的分层音频编码格式。根据控制正交能量压缩变换的定量特性的分解参数将多个音频信号分解成旋转音频信号。此外，推导出时间变量增益曲线，其具体地指定旋转的音频信号如何被处理以衰减不需要的音频内容。单声道层可以包括旋转的信号之一和增益分布。声场层可以包括旋转的信号和分解参数。在一个实施例中，增益分布包括清除增益曲线，其主要目的是消除非语音分量和/或噪声。增益曲线也可以包括相互独立的宽带增益。因为音频编码格式的信号可以以有限的计算量来混合，所以本发明可以有利地应用于远程会议应用中。

5. 发明申请

US20150237301A1 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：在音频或视频会议末尾接收到的语音结束的最终指示
公开(公告)号：US20150237301A1
公开(公告)日：2015-08-20
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 N. 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。

6. 发明授权

US10224046B2 Spatial comfort noise 有权
公开(公告)号：US10224046B2
公开(公告)日：2019-03-05
申请号：US14774966
申请日：2014-03-04
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Glenn N. Dickins , Xuejing Sun , Yen-Liang Shue , Heiko Purnhagen
IPC分类号： G10L19/012 , H04L12/18 , G10L21/0208 , H04M3/56 , G10L19/008
摘要： A method, an apparatus, logic (e.g., executable instructions encoded in a non-transitory computer-readable medium to carry out a method), and a non-transitory computer-readable medium configured with such instructions. The method is to generate and spatially render spatial comfort noise at a receiving endpoint of a conference system, such that the comfort noise has target spectral characteristics typical of comfort noise, and at least one spatial property that at least substantially matches at least one target spatial property. On version includes receiving one or more or more audio signals from other endpoints, combining the received audio signals with the spatial comfort noise signals, and rendering the combination of the received audio signals and the spatial comfort noise signals to a set of output signals for loudspeakers, such that the spatial comfort noise signals are continually in the output signal sin addition to output from the received audio signals.

7. 发明授权

US10217474B2 System for maintaining reversible dynamic range control information associated with parametric audio coders 有权
公开(公告)号：US10217474B2
公开(公告)日：2019-02-26
申请号：US16039608
申请日：2018-07-19
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeffrey Riedmiller , Karl J. Roeden , Kristofer Kjoerling , Heiko Purnhagen , Vinay Melkote , Leif Sehlstrom
IPC分类号： G10L19/24 , G10L19/16 , G10L19/18 , G10L19/008
摘要： On the basis of a bitstream (P), an n-channel audio signal (X) is reconstructed by deriving an m-channel core signal (Y) and multichannel coding parameters (a) from the bitstream, where 1≤m

8. 发明授权

US09721578B2 System for maintaining reversible dynamic range control information associated with parametric audio coders 有权
公开(公告)号：US09721578B2
公开(公告)日：2017-08-01
申请号：US15178102
申请日：2016-06-09
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Jeffrey Riedmiller , Karl J. Roeden , Kristofer Kjoerling , Heiko Purnhagen , Vinay Melkote , Leif Sehlstrom
IPC分类号： H04H20/47 , H04H20/88 , H04H40/36 , G10L19/24 , G10L19/008 , G10L19/18 , G10L19/16
CPC分类号： G10L19/24 , G10L19/008 , G10L19/167 , G10L19/18
摘要： On the basis of a bitstream (P), an n-channel audio signal (X) is reconstructed by deriving an m-channel core signal (Y) and multichannel coding parameters (a) from the bitstream, where 1≦m

9. 发明申请

US20150221313A1 CODING OF A SOUND FIELD SIGNAL 有权
标题翻译：声场信号的编码
公开(公告)号：US20150221313A1
公开(公告)日：2015-08-06
申请号：US14421132
申请日：2013-09-20
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： Heiko Purnhagen , Leif Jonas Samuelsson , Janusz Klejsa , Lars Villemoes , Toni Hirvonen , Glenn N. Dickins , Richard James Cartwright
IPC分类号： G10L19/008 , G10L19/02
CPC分类号： G10L19/012 , G10L19/008 , G10L19/02 , G10L19/0208 , G10L19/032 , G10L19/22 , G10L19/24 , G10L21/02 , G10L21/0208 , G10L21/0216 , H04M3/56
摘要： A method for encoding sound field signals includes allocating coding rate by application of a uniform criterion to all subbands of all signals in a joint process. An allocation criterion may be based on a comparison, in a given subband, between a spectral envelope of the signals to be encoded and a coding noise profile, wherein the noise profile may be a sum of a noise shape and a noise offset, which noise offset is computed on the basis of the coding bit budget. The rate allocation process may be combined with an energy-compacting orthogonal transform, for which there is proposed a parameterization susceptible of efficient coding and having adjustable directivity. In a further aspect, the invention provides a corresponding decoding method.
摘要翻译：用于编码声场信号的方法包括：通过在联合处理中对所有信号的所有子带应用均匀标准来分配编码速率。分配标准可以基于在给定子带中在待编码的信号的频谱包络与编码噪声分布之间的比较，其中噪声分布可以是噪声形状和噪声偏移的和，哪个噪声基于编码比特预算来计算偏移量。速率分配过程可以与能量压缩正交变换组合，其中提出了易于有效编码并且具有可调方向性的参数化。另一方面，本发明提供了相应的解码方法。

10. 发明授权

US11322164B2 Methods and devices for coding soundfield representation signals 有权
公开(公告)号：US11322164B2
公开(公告)日：2022-05-03
申请号：US16963489
申请日：2019-01-17
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： Kristofer Kjoerling , David S. McGrath , Heiko Purnhagen , Mark R. P. Thomas
IPC分类号： G10L19/008
摘要： The present document describes a method (400) for encoding a soundfield representation (SR) input signal (101, 301) describing a soundfield at a reference position, wherein the SR input signal (101, 301) comprises a plurality of channels for a plurality of different directivity patterns of the soundfield at the reference position. The method (400) comprises extracting (401) one or more audio objects (103, 303) from the SR input signal (101, 301). Furthermore, the method (400) comprises determining (402) a residual signal (102, 302) based on the SR input signal (101, 301) and based on the one or more audio objects (103, 303). The method (400) also comprises performing joint coding of the one or more audio objects (103, 303) and/or the residual signal (102, 302). In addition, the method (400) comprises generating (403) a bitstream (701) based on data generated in the context of joint coding of the one or more audio objects (103, 303) and/or the residual signal (102, 302).

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