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1. 发明授权

EP3252757B1 AUDIO ENCODER AND DECODER 有权转让
公开(公告)号：EP3252757B1
公开(公告)日：2019-12-25
申请号：EP17164543.5
申请日：2014-05-23
申请人： Dolby International AB
发明人： SAMUELSSON, Leif Jonas , PURNHAGEN, Heiko
IPC分类号： G10L19/008 , G10L19/038 , G10L19/00 , H04S3/02

2. 发明公开

EP2898506A1 LAYERED APPROACH TO SPATIAL AUDIO CODING 有权转让
标题翻译： GESCHICHTERTER ANSATZFÜRRÄUMLICHEAUDIOCODIERUNG
公开(公告)号：EP2898506A1
公开(公告)日：2015-07-29
申请号：EP13763433.3
申请日：2013-09-10
申请人： Dolby Laboratories Licensing Corporation , Dolby International AB
发明人： DICKINS, Glenn , PURNHAGEN, Heiko , SAMUELSSON, Leif Jonas
IPC分类号： G10L19/008 , G10L21/02 , H03G9/02 , 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。

3. 发明公开

EP3956886A1 DIALOGUE ENHANCEMENT IN AUDIO CODEC 有权转让
公开(公告)号：EP3956886A1
公开(公告)日：2022-02-23
申请号：EP20717889.8
申请日：2020-04-15
申请人： Dolby International AB
发明人： GORLOW, Stanislaw , SAMUELSSON, Leif Jonas , HOERICH, Holger , FRIEDRICH, Tobias
IPC分类号： G10L19/16 , G10L21/0364

4. 发明授权

EP2898506B1 LAYERED APPROACH TO SPATIAL AUDIO CODING 有权转让
标题翻译：空间音频编码的分层方法
公开(公告)号：EP2898506B1
公开(公告)日：2018-01-17
申请号：EP13763433.3
申请日：2013-09-10
申请人： Dolby Laboratories Licensing Corporation , Dolby International AB
发明人： DICKINS, Glenn , PURNHAGEN, Heiko , SAMUELSSON, Leif Jonas
IPC分类号： G10L19/008 , G10L21/02 , G10L19/24 , H04M3/56
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.

5. 发明授权

EP2898507B1 CODING OF A SOUND FIELD SIGNAL 有权转让
标题翻译： CODE声场信号的
公开(公告)号：EP2898507B1
公开(公告)日：2016-12-14
申请号：EP13766938.8
申请日：2013-09-20
申请人： Dolby International AB , Dolby Laboratories Licensing Corporation
发明人： PURNHAGEN, Heiko , SAMUELSSON, Leif Jonas , KLEJSA, Janusz , VILLEMOES, Lars , HIRVONEN, Toni , DICKINS, Glenn N. , CARTWRIGHT, Richard James
IPC分类号： G10L19/008 , G10L19/032 , 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.

6. 发明公开

EP2973551A2 RECONSTRUCTION OF AUDIO SCENES FROM A DOWNMIX 有权转让
标题翻译： VON AUDIOSZENEN AUS EINEM DOWNMIX
公开(公告)号：EP2973551A2
公开(公告)日：2016-01-20
申请号：EP14725737.2
申请日：2014-05-23
申请人： Dolby International AB
发明人： HIRVONEN, Toni , PURNHAGEN, Heiko , SAMUELSSON, Leif Jonas , VILLEMOES, Lars
IPC分类号： G10L19/008 , H04S7/00
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/20 , G10L25/06 , H04S3/008 , H04S3/02 , H04S5/00 , H04S7/30 , H04S2400/03 , H04S2400/11 , H04S2420/03
摘要： Audio objects are associated with positional metadata. A received downmix signal comprises downmix channels that are linear combinations of one or more audio objects and are associated with respective positional locators. In a first aspect, the downmix signal, the positional metadata and frequency- dependent object gains are received. An audio object is reconstructed by applying the object gain to an upmix of the downmix signal in accordance with coefficients based on the positional metadata and the positional locators. In a second aspect, audio objects have been encoded together with at least one bed channel positioned at a positional locator of a corresponding downmix channel. The decoding system receives the downmix signal and the positional metadata of the audio objects. A bed channel is reconstructed by suppressing the content representing audio objects from the corresponding downmix channel on the basis of the positional locator of the corresponding downmix channel.
摘要翻译：音频对象与位置元数据相关联。接收的下混合信号包括作为一个或多个音频对象的线性组合的下混通道，并且与相应的位置定位器相关联。在第一方面，接收降混信号，位置元数据和频率依赖对象增益。根据基于位置元数据和位置定位器的系数，将对象增益应用于缩混信号的上混合来重构音频对象。在第二方面，音频对象已经与位于对应的下混通道的位置定位器处的至少一个床通道一起被编码。解码系统接收下混信号和音频对象的位置元数据。基于对应的下混通道的位置定位器，通过抑制表示来自对应的下混通道的音频对象的内容来重建床通道。

7. 发明公开

EP3933834A1 ENHANCED SOUNDFIELD CODING USING PARAMETRIC COMPONENT GENERATION 审中-实审转让
公开(公告)号：EP3933834A1
公开(公告)日：2022-01-05
申请号：EP21192357.8
申请日：2014-06-27
申请人： Dolby International AB
发明人： PURNHAGEN, Heiko , HIRVONEN, Toni , SAMUELSSON, Leif Jonas , VILLEMOES, Lars , KLEJSA, Janusz , MUNDT, Harald
IPC分类号： G10L19/008 , G10L19/02
摘要： The present document relates to multichannel audio coding and more precisely to techniques for discrete multichannel audio encoding and decoding. In particular, the present document relates to systems and method for coding soundfields. An audio encoder (200) configured to encode a frame of a soundfield signal (110) comprising a plurality of audio signals is described. The audio encoder (200) comprises a transform determination unit (203, 204) configured to determine an energy-compacting orthogonal transform (V) based on the frame of the soundfield signal (110). Furthermore, the encoder (200) comprises a transform unit (202) configured to apply the energy-compacting orthogonal transform (V) to the frame of the soundfield signal (110), and configured to provide a frame of a rotated soundfield signal (112) comprising a plurality of rotated audio signals (El, E2, E3). The audio encoder (200) comprises a waveform encoding unit (103) configured to encode a first rotated audio signal (El) of the plurality of rotated audio signals (El, E2, E3), and a parametric encoding unit (104) configured to determine a set of spatial parameters (ae2, be2) for determining a second rotated audio signal (E2) of the plurality of rotated audio signals (El, E2, E3) based on the first rotated audio signal (El).

8. 发明公开

EP3044783A1 AUDIO DECODING SYSTEM AND AUDIO ENCODING SYSTEM 有权转让
标题翻译： AUDIOKODIERUNG
公开(公告)号：EP3044783A1
公开(公告)日：2016-07-20
申请号：EP14759218.2
申请日：2014-09-08
申请人： Dolby International AB
发明人： VILLEMOES, Lars , SAMUELSSON, Leif Jonas , KJOERLING, Kristofer , PURNHAGEN, Heiko , SEHLSTROM, Leif
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： An audio decoding system (100) for processing a two-channel input signal (X) comprises a parametric mixing stage (110). The parametric mixing stage receives the two-channel input signal and a set of mixing parameters (P1), and outputs a two-channel output signal (Y1). The parametric mixing stage comprises a decorrelation stage (111) outputting a decorrelated signal (D1) based on the input signal. The parametric mixing stage further comprises a mixing matrix (112) receiving the input signal and the decorrelated signal, and forming a two-channel linear combination of channels from the input signal and the decorrelated signal. The mixing matrix outputs the linear combination as the two-channel output signal. Coefficients of the linear combination are controllable by the set of mixing parameters, and at least four mixing parameters of the set are independently assignable. In example embodiments, multiple parametric mixing stages are used to independently reconstruct additional channels encoded in the input signal.
摘要翻译：用于处理双通道输入信号（X）的音频解码系统（100）包括参数混合级（110）。参数混合级接收双通道输入信号和一组混合参数（P1），并输出双通道输出信号（Y1）。参数混合级包括基于输入信号输出解相关信号（D1）的去相关级（111）。参数混合阶段还包括接收输入信号和去相关信号的混合矩阵（112），以及从输入信号和解相关信号形成信道的双通道线性组合。混合矩阵输出线性组合作为双通道输出信号。线性组合的系数可以通过混合参数的集合来控制，并且该组的至少四个混合参数是独立可分配的。在示例实施例中，使用多个参数混合级来独立地重建在输入信号中编码的附加通道。

9. 发明公开

EP3017446A1 ENHANCED SOUNDFIELD CODING USING PARAMETRIC COMPONENT GENERATION 有权转让
标题翻译：改善的声音场编码装置发生参数分量
公开(公告)号：EP3017446A1
公开(公告)日：2016-05-11
申请号：EP14733219.1
申请日：2014-06-27
申请人： Dolby International AB
发明人： PURNHAGEN, Heiko , HIRVONEN, Toni , SAMUELSSON, Leif Jonas , VILLEMOES, Lars , KLEJSA, Janusz , MUNDT, Harald
IPC分类号： G10L19/008 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/0212 , G10L19/06
摘要： The present document relates to multichannel audio coding and more precisely to techniques for discrete multichannel audio encoding and decoding. In particular, the present document relates to systems and method for coding soundfields. An audio encoder (200) configured to encode a frame of a soundfield signal (110) comprising a plurality of audio signals is described. The audio encoder (200) comprises a transform determination unit (203, 204) configured to determine an energy-compacting orthogonal transform (V) based on the frame of the soundfield signal (110). Furthermore, the encoder (200) comprises a transform unit (202) configured to apply the energy-compacting orthogonal transform (V) to the frame of the soundfield signal (110), and configured to provide a frame of a rotated soundfield signal (112) comprising a plurality of rotated audio signals (E1, E2, E3). The audio encoder (200) comprises a waveform encoding unit (103) configured to encode a first rotated audio signal (E1) of the plurality of rotated audio signals (E1, E2, E3), and a parametric encoding unit (104) configured to determine a set of spatial parameters (ae2, be2) for determining a second rotated audio signal (E2) of the plurality of rotated audio signals (E1, E2, E3) based on the first rotated audio signal (E1).

10. 发明公开

EP2898509A1 AUDIO CODING WITH GAIN PROFILE EXTRACTION AND TRANSMISSION FOR SPEECH ENHANCEMENT AT THE DECODER 有权转让
标题翻译：有加强轮廓提取和传输技术的语音改进的解码器的声音编码
公开(公告)号：EP2898509A1
公开(公告)日：2015-07-29
申请号：EP13763440.8
申请日：2013-09-11
申请人： Dolby Laboratories Licensing Corporation , Dolby International AB
发明人： DICKINS, Glenn , PURNHAGEN, Heiko , SAMUELSSON, Leif Jonas
IPC分类号： G10L21/02 , H04M3/56 , H03G9/02 , 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.

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