公开(公告)号：US09514759B2

公开(公告)日：2016-12-06

申请号：US14460074

申请日：2014-08-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： David Virette ,  Janusz Klejsa ,  Willem Bastiaan Kleijn

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: A method and apparatus for performing an adaptive down-mixing of a multichannel audio signal comprising a number of input channels, wherein a signal adaptive transformation of said input channels is performed by multiplying the input channels with a downmix block matrix comprising a fixed block for providing a set of backward compatible primary channels and a signal adaptive block for providing a set of secondary channels.

Abstract translation: 一种用于执行包括多个输入通道的多通道音频信号的自适应降混的方法和装置，其中所述输入通道的信号自适应变换通过将输入通道与包括固定块的下混块矩阵相乘来进行，以提供 一组向后兼容的主信道和用于提供一组次信道的信号自适应块。

公开(公告)号：US20140077977A1

公开(公告)日：2014-03-20

申请号：US14087080

申请日：2013-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Guoqiang Zhang ,  Minyue Li ,  Bastiaan K. Kleijn

IPC: H03M13/29

CPC classification number: H03M7/4006 ,  H03M7/3059 ,  H03M7/40 ,  H03M13/29 ,  H04B1/04 ,  H04N19/30 ,  H04N19/44

Abstract: In a method for reconstructing a source signal, which is encoded by a set of at least two descriptions, the method comprises: receiving a subset of the set of descriptions; reconstructing a reconstructed signal at an operating bitrate of a set of operating bitrates upon the basis of the subset of descriptions, the reconstructed signal having a second probability density, wherein the second probability density comprises a first statistical moment and a second statistical moment; and manipulating the reconstructed signal, wherein the reconstructed signal is manipulated such that, irrespective of the operating bitrate, a predetermined minimum similarity between the first statistical moment of the third probability density and the first statistical moment of the first probability density and between the second statistical moment of the third probability density and the second statistical moment of the first probability density is maintained.

Abstract translation: 在用于重建由一组至少两个描述编码的源信号的方法中，所述方法包括：接收所述一组描述的子集; 基于所述描述子集，以一组操作比特率的操作比特率来重建重构信号，所述重建信号具有第二概率密度，其中所述第二概率密度包括第一统计矩和第二统计矩; 以及操纵所述重构信号，其中所述重构信号被操纵，使得与所述操作比特率无关地，所述第三概率密度的所述第一统计时刻与所述第一概率密度的第一统计时刻之间的预定最小相似度与所述第二统计 保持第三概率密度的时刻和第一概率密度的第二统计矩。

公开(公告)号：US09100053B2

公开(公告)日：2015-08-04

申请号：US14087080

申请日：2013-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Guoqiang Zhang ,  Minyue Li ,  Willem Bastiaan Kleijn

IPC: H03M7/40 ,  H03M13/29 ,  H03M7/30

CPC classification number: H03M7/4006 ,  H03M7/3059 ,  H03M7/40 ,  H03M13/29 ,  H04B1/04 ,  H04N19/30 ,  H04N19/44

Abstract: In a method for reconstructing a source signal, which is encoded by a set of at least two descriptions, the method comprises: receiving a subset of the set of descriptions; reconstructing a reconstructed signal at an operating bitrate of a set of operating bitrates upon the basis of the subset of descriptions, the reconstructed signal having a second probability density, wherein the second probability density comprises a first statistical moment and a second statistical moment; and manipulating the reconstructed signal, wherein the reconstructed signal is manipulated such that, irrespective of the operating bitrate, a predetermined minimum similarity between the first statistical moment of the third probability density and the first statistical moment of the first probability density and between the second statistical moment of the third probability density and the second statistical moment of the first probability density is maintained.

Abstract translation: 在用于重建由一组至少两个描述编码的源信号的方法中，所述方法包括：接收所述一组描述的子集; 基于所述描述子集，以一组操作比特率的操作比特率来重建重构信号，所述重建信号具有第二概率密度，其中所述第二概率密度包括第一统计矩和第二统计矩; 以及操纵所述重构信号，其中所述重构信号被操纵，使得与所述操作比特率无关地，所述第三概率密度的所述第一统计时刻与所述第一概率密度的第一统计时刻之间的预定最小相似度与所述第二统计 保持第三概率密度的时刻和第一概率密度的第二统计矩。

公开(公告)号：US20140191888A1

公开(公告)日：2014-07-10

申请号：US14186237

申请日：2014-02-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Minyue Li ,  Willem Bastiaan Kleijn

IPC: H03M7/00

CPC classification number: H03M7/00 ,  H03M7/3079 ,  H04N19/463 ,  H04N19/91

Abstract: The invention relates to an estimator for estimating a probability distribution of a quantization index generated from a source coder encoding a source signal, into a sequence of quantization indices, the source signal being described by a signal model, the source coder providing a current quantization index and current side information, the estimator being configured to obtain auxiliary parameters based on a configuration of the source coder and the current available side information and the signal model, the estimator being further configured to adaptively update the probability distribution of a quantization index upon the basis of a probability density function relating to a previous state of the estimator, the auxiliary parameters, the current quantization index and the current side information.

Abstract translation: 本发明涉及一种用于估计从编码源信号的源编码器产生的量化索引的概率分布的估计器，其被编码为量化索引序列，源信号由信号模型描述，源编码器提供当前量化索引 以及当前侧信息，所述估计器被配置为基于所述源编码器和所述当前可用侧信息和所述信号模型的配置来获得辅助参数，所述估计器还被配置为在基础上自适应地更新量化索引的概率分布 与估计器的先前状态，辅助参数，当前量化索引和当前侧信息相关的概率密度函数。

公开(公告)号：US09287895B2

公开(公告)日：2016-03-15

申请号：US14751359

申请日：2015-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Guoqiang Zhang ,  Minyue Li ,  Willem Bastiaan Kleijn

IPC: H03M7/40 ,  H03M7/30 ,  H04N19/33 ,  H04N19/44 ,  H04B1/04 ,  H03M13/29 ,  H04N19/30

CPC classification number: H03M7/4006 ,  H03M7/3059 ,  H03M7/40 ,  H03M13/29 ,  H04B1/04 ,  H04N19/30 ,  H04N19/44

Abstract: In a method for reconstructing a source signal, which is encoded by a set of at least two descriptions, the method comprises: receiving a subset of the set of descriptions; reconstructing a reconstructed signal at an operating bitrate of a set of operating bitrates upon the basis of the subset of descriptions, the reconstructed signal having a second probability density, wherein the second probability density comprises a first statistical moment and a second statistical moment; and manipulating the reconstructed signal, wherein the reconstructed signal is manipulated such that, irrespective of the operating bitrate, a predetermined minimum similarity between a first statistical moment of a third probability density and a first statistical moment of a first probability density and between a second statistical moment of the third probability density and a second statistical moment of the first probability density is maintained.

Abstract translation: 在用于重建由一组至少两个描述编码的源信号的方法中，所述方法包括：接收所述一组描述的子集; 基于所述描述子集，以一组操作比特率的操作比特率来重建重构信号，所述重建信号具有第二概率密度，其中所述第二概率密度包括第一统计矩和第二统计矩; 以及操纵所述重建信号，其中所述重构信号被操纵，使得与第一概率密度的第一统计矩和第一概率密度的第一统计矩之间的第一统计矩和第二概率密度之间的预定最小相似度与运算比特率无关， 保持第三概率密度的时刻和第一概率密度的第二统计矩。

公开(公告)号：US20150295590A1

公开(公告)日：2015-10-15

申请号：US14751359

申请日：2015-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Guoqiang Zhang ,  Minyue Li ,  Willem Bastiaan Kleijn

IPC: H03M7/40 ,  H04B1/04

CPC classification number: H03M7/4006 ,  H03M7/3059 ,  H03M7/40 ,  H03M13/29 ,  H04B1/04 ,  H04N19/30 ,  H04N19/44

Abstract: In a method for reconstructing a source signal, which is encoded by a set of at least two descriptions, the method comprises: receiving a subset of the set of descriptions; reconstructing a reconstructed signal at an operating bitrate of a set of operating bitrates upon the basis of the subset of descriptions, the reconstructed signal having a second probability density, wherein the second probability density comprises a first statistical moment and a second statistical moment; and manipulating the reconstructed signal, wherein the reconstructed signal is manipulated such that, irrespective of the operating bitrate, a predetermined minimum similarity between a first statistical moment of a third probability density and a first statistical moment of a first probability density and between a second statistical moment of the third probability density and a second statistical moment of the first probability density is maintained.

Abstract translation: 在用于重建由一组至少两个描述编码的源信号的方法中，所述方法包括：接收所述一组描述的子集; 基于所述描述子集，以一组操作比特率的操作比特率来重建重构信号，所述重建信号具有第二概率密度，其中所述第二概率密度包括第一统计矩和第二统计矩; 以及操纵所述重建信号，其中所述重构信号被操纵，使得与第一概率密度的第一统计矩和第一概率密度的第一统计矩之间的第一统计矩和第二概率密度之间的预定最小相似度与运算比特率无关， 保持第三概率密度的时刻和第一概率密度的第二统计矩。

公开(公告)号：US09041568B2

公开(公告)日：2015-05-26

申请号：US14186237

申请日：2014-02-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Janusz Klejsa ,  Minyue Li ,  Willem Bastiaan Kleijn

IPC: H03M7/00 ,  H03M7/30 ,  H04N19/463 ,  H04N19/91

CPC classification number: H03M7/00 ,  H03M7/3079 ,  H04N19/463 ,  H04N19/91

Abstract: The invention relates to an estimator for estimating a probability distribution of a quantization index generated from a source coder encoding a source signal, into a sequence of quantization indices, the source signal being described by a signal model, the source coder providing a current quantization index and current side information, the estimator being configured to obtain auxiliary parameters based on a configuration of the source coder and the current available side information and the signal model, the estimator being further configured to adaptively update the probability distribution of a quantization index upon the basis of a probability density function relating to a previous state of the estimator, the auxiliary parameters, the current quantization index and the current side information.

Abstract translation: 本发明涉及一种用于估计从编码源信号的源编码器产生的量化索引的概率分布的估计器，其被编码为量化索引序列，源信号由信号模型描述，源编码器提供当前量化索引 以及当前侧信息，所述估计器被配置为基于所述源编码器和所述当前可用侧信息和所述信号模型的配置来获得辅助参数，所述估计器还被配置为在基础上自适应地更新量化索引的概率分布 与估计器的先前状态，辅助参数，当前量化索引和当前侧信息相关的概率密度函数。