专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2008125523A1 ADAPTIVE, SCALABLE PACKET LOSS RECOVERY 审中-公开
标题翻译：自适应，可分级包丢失恢复
公开(公告)号：WO2008125523A1
公开(公告)日：2008-10-23
申请号：PCT/EP2008/054114
申请日：2008-04-04
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc. , FELDBAUER, Christian , KLEIJN, Willem Bastiaan
发明人： FELDBAUER, Christian , KLEIJN, Willem Bastiaan
IPC分类号： H03M7/30 , H03M13/37
CPC分类号： G06F11/10 , G10L19/005 , G10L19/24 , H03M7/30 , H03M13/373 , H03M13/6312 , H04N19/115 , H04N19/15 , H04N19/164 , H04N19/166
摘要： A system for transmitting data packets representing a source signal across a packet data network is provided. The encoder comprises a first encoder (110) and a redundancy encoder (120). The redundancy encoding is generated with a bit rate continuously scalable, the bit rate being provided by a bit rate controller (142) that uses input from the network (130) and packet-loss rate information. At the decoder, recovery is performed by a parameter estimator based in part on information transmitted from the first encoder using information from previous and/or future blocks and in addition on redundant information. The method may be added to existing lossy source coding systems or may be used to enhance the quality of the reconstructed source signal even in scenarios without packet loss.
摘要翻译：提供了一种用于在分组数据网络上传送表示源信号的数据分组的系统。编码器包括第一编码器（110）和冗余编码器（120）。以比特率连续可缩放地生成冗余编码，比特率由使用来自网络（130）的输入的比特率控制器（142）和分组丢失率信息提供。在解码器处，部分地基于来自第一编码器的信息，使用来自先前和/或未来块的信息以及另外的冗余信息，由参数估计器执行恢复。该方法可以添加到现有的有损耗源编码系统中，或者即使在没有分组丢失的情况下也可以用于增强重构源信号的质量。

2. 发明申请

WO2010066496A1 DELAY ESTIMATOR 审中-公开
标题翻译：延迟估计
公开(公告)号：WO2010066496A1
公开(公告)日：2010-06-17
申请号：PCT/EP2009/063707
申请日：2009-10-20
申请人： GLOBAL IP SOLUTIONS (GIPS) AB , GLOBAL IP SOLUTIONS, INC. , KLEIJN, Willem Bastiaan
发明人： KLEIJN, Willem Bastiaan
IPC分类号： H04M9/08
CPC分类号： H04M9/082 , H04B3/46
摘要： The present invention provides a method and apparatus for finding an estimate of the delay of a signal travelling between two points. A quantity is evaluated from the signal at a final number of time instants, at both a reference point and a reception point. The values are quantized by comparison with a threshold adapted to a typical magnitude of the quantity. If the quantized values from the reception point are shifted back by the true delay with respect to the quantized values from the reference point, then certain co-occurrences of quantized values have very low probability. Hence, the best delay estimate is that shift which yields the least number of low-probability co-occurrences.
摘要翻译：本发明提供了一种用于找到在两点之间行进的信号的延迟的估计的方法和装置。在最后数量的时刻，在参考点和接收点处，从信号中估算出一个数量。通过与适应于数量的典型量值的阈值进行比较来量化该值。如果来自接收点的量化值相对于从参考点的量化值移回真实延迟，则量化值的某些共同出现具有非常低的概率。因此，最佳延迟估计是产生最少数量的低概率共同出现的偏移。

3. 发明申请

WO2009015944A1 A LOW-DELAY AUDIO CODER 审中-公开
标题翻译：低延迟音频编码器
公开(公告)号：WO2009015944A1
公开(公告)日：2009-02-05
申请号：PCT/EP2008/057970
申请日：2008-06-23
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc. , LI, Minyue , KLEIJN, Willem Bastiaan
发明人： LI, Minyue , KLEIJN, Willem Bastiaan
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , H04R25/552 , H04R2225/55
摘要： The present invention relates to methods and devices for encoding and decoding digital audio signals, e.g. a speech signal. An audio coder and a decoder are provided wherein a modeller adds a first distribution model obtained from model parameters of past segments of the digital audio signal and a fixed distribution model, each of the models being multiplied by a weighting coefficient, for obtaining a combined distribution model. The weighting coefficients are selected to minimize a code length of a current segment of the digital audio signal. As the combined distribution model is a sum of several distribution models, wherein at least some of the models is based on the model parameters, flexibility is introduced in the signal model used to encode the digital audio signal. Thus, an audio coder and decoder providing a low bit rate in average, low bit rate variations and low error propagation are provided.
摘要翻译：本发明涉及用于对数字音频信号进行编码和解码的方法和装置，例如，一个语音信号。提供一种音频编码器和解码器，其中，建模器添加从数字音频信号的过去段的模型参数和固定分布模型获得的第一分布模型，每个模型乘以加权系数，以获得组合分布模型。选择加权系数以最小化数字音频信号的当前段的代码长度。由于组合分布模型是几个分布模型的总和，其中至少一些模型基于模型参数，在用于对数字音频信号进行编码的信号模型中引入了灵活性。因此，提供了平均提供低比特率，低比特率变化和低错误传播的音频编码器和解码器。

4. 发明申请

WO2011033103A1 CODING AND DECODING OF SOURCE SIGNALS USING CONSTRAINED RELATIVE ENTROPY QUANTIZATION 审中-公开
标题翻译：使用约束相关熵定标对源信号进行编码和解码
公开(公告)号：WO2011033103A1
公开(公告)日：2011-03-24
申请号：PCT/EP2010/063789
申请日：2010-09-20
申请人： GLOBAL IP SOLUTIONS (GIPS) AB , GLOBAL IP SOLUTIONS, INC. , KLEIJN, Willem Bastiaan , LI, Minyue
发明人： KLEIJN, Willem Bastiaan , LI, Minyue
IPC分类号： G10L19/00 , H03M7/30 , H04N7/26
CPC分类号： G10L19/00
摘要： Methods and devices for encoding and decoding are provided. A source signal value is encoded by a quantization index determined using a partition into quantization cells. Decoding of the quantization index takes place by sampling a reconstruction probability distribution, thereby obtaining a reconstructed signal value, such that the reconstructed signal value lies in the same quantization cell as the source signal value. In one embodiment, encoding and decoding are such that their succession preserves the source signal distribution. In another embodiment, the partition and the reconstruction probability distribution are determined in such manner that the quantization error is minimized subject to a constraint on the relative entropy between the source signal and the reconstructed signal.
摘要翻译：提供了用于编码和解码的方法和装置。源信号值由使用分区确定的量化单元的量化索引进行编码。通过对重构概率分布进行采样来进行量化索引的解码，从而获得重构信号值，使得重构信号值位于与源信号值相同的量化单元中。在一个实施例中，编码和解码使得它们的继承保持源信号分布。在另一个实施例中，以这样的方式确定分区和重建概率分布，使得在对源信号和重建信号之间的相对熵的约束下，量化误差被最小化。

5. 发明公开

EP2381580A1 Adaptive, scalable packet loss recovery 无效转让
标题翻译：自适应，skalierbare Paketverlustwiederherstellung
公开(公告)号：EP2381580A1
公开(公告)日：2011-10-26
申请号：EP11173350.7
申请日：2007-04-13
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： KLEIJN, Willem Bastiaan , FELDBAUER, Christian
IPC分类号： H03M7/30 , H03M13/37 , G10L19/00 , H04N7/66 , G10L19/14 , H04N7/26
CPC分类号： G06F11/10 , G10L19/005 , G10L19/24 , H03M7/30 , H03M13/373 , H03M13/6312 , H04N19/115 , H04N19/15 , H04N19/164 , H04N19/166
摘要： A system for transmitting data packets representing a source signal across a packet data network is provided. The encoder comprises a first encoder (110) and a redundancy encoder (120). The redundancy encoding is generated with a bitrate continuously scalable. The bit rate being provided by a bit rate controller (142) that uses input from the network (130) and packet-loss rate information. At the decoder, recovery is performed by a parameter estimator based in part on information transmitted from the first encoder using information from previous and/or future blocks and in addition redundant information. The method may be added to existing lossy source coding systems or may be used to enhance the quality of the reconstructed source signal even in scenarios without packet loss.
摘要翻译：提供了一种用于在分组数据网络上发送表示源信号的数据分组的系统。编码器包括第一编码器（110）和冗余编码器（120）。冗余编码以比特率连续可缩放地生成。比特率由使用来自网络（130）的输入的比特率控制器（142）和分组丢失率信息提供。在解码器中，部分地基于来自先前和/或未来块的信息的第一编码器发送的信息以及冗余信息，由参数估计器进行恢复。该方法可以添加到现有的有损耗源编码系统中，或者即使在没有分组丢失的情况下也可以用于增强重构源信号的质量。

6. 发明申请

WO2009045148A1 METHOD AND APPARATUS FOR MULTIPLE DESCRIPTION CODING 审中-公开
标题翻译：多种描述编码的方法和装置
公开(公告)号：WO2009045148A1
公开(公告)日：2009-04-09
申请号：PCT/SE2008/050355
申请日：2008-03-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , KUROPATWINSKI, Marcin , KLEJSA, Janusz , KLEIJN, Willem Bastiaan
发明人： KUROPATWINSKI, Marcin , KLEJSA, Janusz , KLEIJN, Willem Bastiaan
IPC分类号： H03M13/35
CPC分类号： H03M7/30 , H03M7/3057 , H03M13/353 , H04B7/0632 , H04B7/0634 , H04L5/0057
摘要： The present invention relates to a method and apparatus to be used in designing an index assignment matrix for use in multiple description coding of an information signal. The bandwidth of the index assignment matrix is selected in dependence of transmission condition information relating to a transmission condition of a communication channel onto which a description of the information signal can be transmitted.
摘要翻译：本发明涉及一种用于设计用于信息信号的多重描述编码的索引分配矩阵的方法和装置。根据与可以发送信息信号的描述的通信信道的发送条件相关的发送条件信息来选择索引分配矩阵的带宽。

7. 发明申请

WO2013120510A1 A METHOD AND APPARATUS FOR PERFORMING AN ADAPTIVE DOWN- AND UP-MIXING OF A MULTI-CHANNEL AUDIO SIGNAL 审中-公开
标题翻译：用于执行多通道音频信号的自适应下行和上混合的方法和装置
公开(公告)号：WO2013120510A1
公开(公告)日：2013-08-22
申请号：PCT/EP2012/052443
申请日：2012-02-14
申请人： HUAWEI TECHNOLOGIES CO., LTD. , VIRETTE, David , KLEJSA, Janusz , KLEIJN, Willem Bastiaan
发明人： VIRETTE, David , KLEJSA, Janusz , KLEIJN, Willem Bastiaan
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： 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.
摘要翻译：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。

8. 发明申请

WO2014082683A1 AUDIO RENDERING SYSTEM 审中-公开
标题翻译：音频渲染系统
公开(公告)号：WO2014082683A1
公开(公告)日：2014-06-05
申请号：PCT/EP2012/074146
申请日：2012-11-30
申请人： HUAWEI TECHNOLOGIES CO., LTD. , JIN, Wenyu , KLEIJN, Willem Bastiaan , VIRETTE, David
发明人： JIN, Wenyu , KLEIJN, Willem Bastiaan , VIRETTE, David
IPC分类号： H04S7/00
CPC分类号： H04S7/307 , H04S7/30 , H04S2400/11
摘要： The invention relates to an audio rendering system (100), comprising: a plurality of loudspeakers (102) arranged to approximate a desired spatial sound field within a predetermined reproduction region (130), wherein the loudspeakers (102) are configured to approximate the sound field based on a weighted series of orthonormal basis functions for the reproduction region (130).
摘要翻译：本发明涉及一种音频再现系统（100），包括：多个扬声器（102），布置成在预定再现区域（130）内接近期望的空间声场，其中所述扬声器（102）被配置为近似声音基于用于再现区域（130）的加权系数的正交基函数。

9. 发明申请

WO2015062658A1 SYSTEM AND METHOD FOR EVALUATING AN ACOUSTIC TRANSFER FUNCTION 审中-公开
标题翻译：用于评估声学传递函数的系统和方法
公开(公告)号：WO2015062658A1
公开(公告)日：2015-05-07
申请号：PCT/EP2013/072833
申请日：2013-10-31
申请人： HUAWEI TECHNOLOGIES CO., LTD. , JIN, Wenyu , KLEIJN, Willem Bastiaan , LANG, Yue , GROSCHE, Peter
发明人： JIN, Wenyu , KLEIJN, Willem Bastiaan , LANG, Yue , GROSCHE, Peter
IPC分类号： H04R29/00 , H04S7/00
CPC分类号： H04S7/30 , H04S7/301 , H04S2420/01
摘要： A system (100) and a method for evaluating an acoustic transfer function, wherein the acoustic transfer function is a transfer function from one acoustic source to a reproduction area (RA) sampled by a limited number of microphone modules (120).
摘要翻译：一种系统（100）和用于评估声学传递函数的方法，其中所述声学传递函数是从一个声源到由有限数量的麦克风模块（120）采样的再现区域（RA）的传递函数。

10. 发明申请

WO2013026196A1 ESTIMATOR FOR ESTIMATING A PROBABILITY DISTRIBUTION OF A QUANTIZATION INDEX 审中-公开
标题翻译：估计定量指标的概率分布的估计
公开(公告)号：WO2013026196A1
公开(公告)日：2013-02-28
申请号：PCT/CN2011/078774
申请日：2011-08-23
申请人： HUAWEI TECHNOLOGIES CO., LTD. , KLEJSA, Janusz , LI, Minyue , KLEIJN, Willem Bastiaan
发明人： KLEJSA, Janusz , LI, Minyue , KLEIJN, Willem Bastiaan
IPC分类号： G06F17/50
CPC分类号： H03M7/00 , H03M7/3079 , H04N19/463 , H04N19/91
摘要： Estimator for estimating a probability distribution of a quantization index The invention relates to an estimator (1007) 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.
摘要翻译：用于估计量化索引的概率分布的估计器技术领域本发明涉及一种用于估计从编码源信号的源编码器生成的量化索引的概率分布的量化索引的估计器，通过信号模型，源编码器提供当前量化索引和当前侧信息，所述估计器被配置为基于源编码器和当前可用侧信息和信号模型的配置来获得辅助参数，所述估计器进一步配置基于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来自适应地更新量化索引的概率分布。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式