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1. 发明申请

US20110224975A1 LOW-DELAY AUDIO CODER 有权
标题翻译：低延迟音频编码器
公开(公告)号：US20110224975A1
公开(公告)日：2011-09-15
申请号：US12671631
申请日：2008-06-23
申请人： Minyue Li , Willem Bastiaan Kleijn
发明人： Minyue Li , Willem Bastiaan Kleijn
IPC分类号： G10L19/00
CPC分类号： G10L19/08
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。

2. 发明申请

US20120177110A1 CODING AND DECODING OF SOURCE SIGNALS USING CONSTRAINED RELATIVE ENTROPY QUANTIZATION 有权
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：US20120177110A1
公开(公告)日：2012-07-12
申请号：US13497237
申请日：2010-09-20
申请人： Willem Bastiaan Kleijn , Minyue Li
发明人： Willem Bastiaan Kleijn , Minyue Li
IPC分类号： G10L19/00 , 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。通过对重建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构概率分布，使得在对源信号和重构信号之间的相对熵的约束下，量化误差被最小化。

3. 发明授权

US09396732B2 Hierarchical deccorelation of multichannel audio 有权
标题翻译：多声道音频的分层解码
公开(公告)号：US09396732B2
公开(公告)日：2016-07-19
申请号：US13655225
申请日：2012-10-18
申请人： Minyue Li , Willem Bastiaan Kleijn , Jan Skoglund
发明人： Minyue Li , Willem Bastiaan Kleijn , Jan Skoglund
IPC分类号： H04R5/00 , G10L19/008
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0212 , G10L19/035 , G10L19/167
摘要： Provided are methods, systems, and apparatus for hierarchical decorrelation of multichannel audio. A hierarchical decorrelation algorithm is designed to adapt to possibly changing characteristics of an input signal, and also preserves the energy of the original signal. The algorithm is invertible in that the original signal can be retrieved if needed. Furthermore, the proposed algorithm decomposes the decorrelation process into multiple low-complexity steps. The contribution of these steps is generally in a decreasing order, and thus the complexity of the algorithm can be scaled.
摘要翻译：提供了用于多声道音频的分层去相关的方法，系统和装置。分层去相关算法被设计为适应输入信号的可能变化的特性，并且还保留原始信号的能量。该算法是可逆的，因为如果需要，可以检索原始信号。此外，所提出的算法将解相关过程分解为多个低复杂度步骤。这些步骤的贡献通常是递减的，从而可以缩放算法的复杂性。

4. 发明授权

US09336791B2 Rearrangement and rate allocation for compressing multichannel audio 有权
标题翻译：用于压缩多声道音频的重排和速率分配
公开(公告)号：US09336791B2
公开(公告)日：2016-05-10
申请号：US13749399
申请日：2013-01-24
申请人： Minyue Li , Jan Skoglund , Willem Bastiaan Kleijn
发明人： Minyue Li , Jan Skoglund , Willem Bastiaan Kleijn
IPC分类号： G10L21/00 , G10L19/008
CPC分类号： G10L21/00 , G10L19/008
摘要： Provided are methods and systems for rearranging a multichannel audio signal into sub-signals and allocating bit rates among them, such that compressing the sub-signals with a set of audio codecs at the allocated bit rates yields an optimal fidelity with respect to the original multichannel audio signal. Rearranging the multichannel audio signal into sub-signals and assigning each sub-signal a bit rate may be optimized according to a criterion. Existing audio codecs may be used to quantize the sub-signals at the assigned bit rates and the compressed sub-signals may be combined into the original format according to the manner in which the original multichannel audio signal is rearranged.
摘要翻译：提供了用于将多声道音频信号重新排列为子信号并在其间分配比特率的方法和系统，使得以所分配的比特率的一组音频编解码器压缩子信号产生相对于原始多声道的最佳保真度音频信号。可以根据标准来将多声道音频信号重新排列成子信号并且分配每个子信号的比特率。可以使用现有的音频编解码器来以分配的比特率对子信号进行量化，并且压缩的子信号可以根据重新排列原始多声道音频信号的方式被组合成原始格式。

5. 发明授权

US08463615B2 Low-delay audio coder 有权
标题翻译：低延迟音频编码器
公开(公告)号：US08463615B2
公开(公告)日：2013-06-11
申请号：US12671631
申请日：2008-06-23
申请人： Minyue Li , Willem Bastiaan Kleijn
发明人： Minyue Li , Willem Bastiaan Kleijn
IPC分类号： G10L21/00
CPC分类号： G10L19/08
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。

6. 发明授权

US08750374B2 Coding and decoding of source signals using constrained relative entropy quantization 有权
标题翻译：使用约束相对熵量化对源信号进行编码和解码
公开(公告)号：US08750374B2
公开(公告)日：2014-06-10
申请号：US13497237
申请日：2010-09-20
申请人： W. Bastiaan Kleijn , Minyue Li
发明人： W. Bastiaan Kleijn , Minyue Li
IPC分类号： H04N7/12
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。通过对重建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构概率分布，使得在对源信号和重构信号之间的相对熵的约束下，量化误差被最小化。

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