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1. 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。

2. 发明授权

US07009935B2 Transmission over packet switched networks 有权
标题翻译：通过分组交换网络进行传输
公开(公告)号：US07009935B2
公开(公告)日：2006-03-07
申请号：US09852939
申请日：2001-05-09
申请人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
发明人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
IPC分类号： H04L12/28 , H04L12/66 , G10L21/00
CPC分类号： H04L12/6418 , H04L2012/6481
摘要： The invention relates to methods for encoding/decoding a digitized sound signal which is transmitted over a packet switched network in such a way that diversity is provided. Each sound segment of the digitized sound signal is encoded into at least two different segment descriptions, i.e. into different representations of the sound signal segment. The segment descriptions differ from each other in that they provide different quantization values for a digital sound signal sample. The different segment descriptions are transmitted in separate data packets over the network at different points of time.
摘要翻译：本发明涉及通过分组交换网络以提供分集的方式对数字化声音信号进行编码/解码的方法。数字化声音信号的每个声音段被编码成至少两个不同的段描述，即声音信号段的不同表示。段描述彼此不同之处在于它们为数字声音信号样本提供不同的量化值。不同的段描述在不同的时间点通过网络在单独的数据分组中传输。

3. 发明授权

US06970479B2 Encoding and decoding of a digital signal 有权
标题翻译：数字信号的编码和解码
公开(公告)号：US06970479B2
公开(公告)日：2005-11-29
申请号：US09853883
申请日：2001-05-10
申请人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
发明人： Tina Abrahamsson , Soren Vang Andersen , Roar Hagen , W. Bastiaan Kleijn
IPC分类号： G10L19/02 , H04J3/24 , G10L19/04 , G10L19/08 , H04J3/07
CPC分类号： G10L19/02
摘要： The invention relates to methods for encoding/decoding of a digital signal which is transmitted over a packet switched network. Prediction samples are generated at the transmitting and receiving end. The digital signal is lossless encoded at the transmitting end, and lossless decoded at the receiving end, based on the quantizations of generated prediction samples. During encoding, the generated prediction samples are quantized separately from the quantization of the digital samples. The predictions are used in the index domain in the form of quantized indices during encoding/decoding of the digital signal.
摘要翻译：本发明涉及通过分组交换网络发送的数字信号的编码/解码方法。在发送和接收端生成预测样本。数字信号在发送端进行无损编码，并根据生成的预测样本的量化在接收端进行无损解码。在编码期间，所生成的预测样本与数字样本的量化分开量化。预测在数字信号的编码/解码期间以量化索引的形式在索引域中使用。

4. 发明授权

US07103539B2 Enhanced coded speech 有权
公开(公告)号：US07103539B2
公开(公告)日：2006-09-05
申请号：US10036747
申请日：2001-11-08
申请人： W. Bastiaan Kleijn
发明人： W. Bastiaan Kleijn
IPC分类号： G10L21/02
CPC分类号： G10L21/0364
摘要： According to the invention, a method for increasing quality of an enhanced output signal to approximate an undistorted sound signal is disclosed. In one step, a distorted input signal is received that includes an embedded corrupting signal. The embedded corrupting signal is statistically related to the undistorted sound signal. An enhancement signal is determined by finding a difference between the distorted input signal and the enhanced output signal. The enhancement signal attempts to offset the affect of the embedded corrupting signal. Based at least in part upon analyzing the enhancement signal, the enhanced output signal is produced.

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