公开(公告)号：US08880414B2

公开(公告)日：2014-11-04

申请号：US13030929

申请日：2011-02-18

申请人： Soren Vang Andersen ,  Roar Hagen ,  Bastiaan Kleijn

发明人： Soren Vang Andersen ,  Roar Hagen ,  Bastiaan Kleijn

IPC分类号： G10L21/00 ,  G10L19/04 ,  G10L19/02

CPC分类号： G10L19/04 ,  G10L19/0212

摘要： The present invention relates to improvements of predictive encoding/decoding operations performed on a signal which is transmitted over a packet switched network. The signal is encoded on a block by block basis in such way that a block A-B is predictive encoded independently of any preceding blocks. A start state 715 located somewhere between the end boundaries A and B of the block is encoded using any applicable coding method. Both block parts surrounding the start state is then predictive encoded based on the start state and in opposite directions with respect to each other, thereby resulting in a full encoded representation 745 of the block A-B. At the decoding end, corresponding decoding operations are performed.

摘要翻译： 本发明涉及对通过分组交换网络发送的信号执行的预测编码/解码操作的改进。 该信号以块为单位进行编码，使块A-B独立于任何先前的块进行预测编码。 使用任何适用的编码方法对位于块的结束边界A和B之间某处的开始状态715进行编码。 然后，基于开始状态和相对于彼此的相反方向对包围开始状态的两个块部分进行预测编码，从而得到块A-B的完全编码表示745。 在解码端，执行相应的解码操作。

公开(公告)号：US20110142126A1

公开(公告)日：2011-06-16

申请号：US13030929

申请日：2011-02-18

申请人： Soren V. ANDERSEN ,  Roar Hagen ,  Bastlaan Kleijn

发明人： Soren V. ANDERSEN ,  Roar Hagen ,  Bastlaan Kleijn

IPC分类号： H04N7/32

CPC分类号： G10L19/04 ,  G10L19/0212

摘要： The present invention relates to improvements of predictive encoding/decoding operations performed on a signal which is transmitted over a packet switched network. The signal is encoded on a block by block basis in such way that a block A-B is predictive encoded independently of any preceding blocks. A start state 715 located somewhere between the end boundaries A and B of the block is encoded using any applicable coding method. Both block parts surrounding the start state is then predictive encoded based on the start state and in opposite directions with respect to each other, thereby resulting in a full encoded representation 745 of the block A-B. At the decoding end, corresponding decoding operations are performed.

摘要翻译： 本发明涉及对通过分组交换网络发送的信号执行的预测编码/解码操作的改进。 该信号以块为单位进行编码，使块A-B独立于任何先前的块进行预测编码。 使用任何适用的编码方法对位于块的结束边界A和B之间某处的开始状态715进行编码。 然后，基于开始状态和相对于彼此的相反方向对包围开始状态的两个块部分进行预测编码，从而得到块A-B的完全编码表示745。 在解码端，执行相应的解码操作。

公开(公告)号：US07895046B2

公开(公告)日：2011-02-22

申请号：US10497530

申请日：2002-12-03

申请人： Soren V. Andersen ,  Roar Hagen ,  Bastiaan Kleijn

发明人： Soren V. Andersen ,  Roar Hagen ,  Bastiaan Kleijn

IPC分类号： G10L21/04

CPC分类号： G10L19/04 ,  G10L19/0212

摘要： The present invention relates to improvements of predictive encoding/decoding operations performed on a signal which is transmitted over a packet switched network. The signal is encoded on a block by block basis in such way that a block A-B is predictive encoded independently of any preceding blocks. A start state (715) located somewhere between the end boundaries A and B of the block is encoded using any applicable coding method. Both block parts surrounding the start state is then predictive encoded based on the start state and in opposite directions with respect to each other, thereby resulting in a full encoded representation (745) of the block A-B. At the decoding end, corresponding decoding operations are performed.

摘要翻译： 本发明涉及对通过分组交换网络发送的信号执行的预测编码/解码操作的改进。 该信号以块为单位进行编码，使块A-B独立于任何先前的块进行预测编码。 使用任何适用的编码方法对位于块的结束边界A和B之间某处的开始状态（715）进行编码。 然后基于开始状态和相对于彼此的相反方向对包围开始状态的两个块部分进行预测编码，由此导致块A-B的完整编码表示（745）。 在解码端，执行相应的解码操作。

公开(公告)号：US06192335B1

公开(公告)日：2001-02-20

申请号：US09144961

申请日：1998-09-01

申请人： Erik Ekudden ,  Roar Hagen

发明人： Erik Ekudden ,  Roar Hagen

IPC分类号： G10L1104

CPC分类号： G10L19/083 ,  G10L2019/0003 ,  G10L2025/935

摘要： In producing from an original speech signal a plurality of parameters from which an approximation of the original speech signal can be reconstructed, a coded signal of the original speech signal is generated. At least one of the parameters is determined using first and second differences between the original speech signal and the coded signal. The first difference is a difference between a waveform associated with the original speech signal and a waveform associated with the coded signal, and the second difference is a difference between an energy parameter derived from the original speech signal and a corresponding energy parameter associated with the coded signal.

摘要翻译： 在从原始语音信号生成可以重构原始语音信号的近似的多个参数时，生成原始语音信号的编码信号。 使用原始语音信号和编码信号之间的第一和第二差异来确定参数中的至少一个。 第一个区别是与原始语音信号相关联的波形与与编码信号相关联的波形之间的差异，第二个差异是从原始语音信号导出的能量参数与与编码信号相关联的相应能量参数之间的差异 信号。

公开(公告)号：US6138093A

公开(公告)日：2000-10-24

申请号：US32942

申请日：1998-03-02

申请人： Erik Ekudden ,  Roar Hagen ,  Bastiaan Kleijn

发明人： Erik Ekudden ,  Roar Hagen ,  Bastiaan Kleijn

IPC分类号： G10L19/26 ,  G10L21/0232 ,  G10L25/27 ,  H03M7/30 ,  H04B14/00 ,  G10L19/02

CPC分类号： G10L19/26 ,  G10L21/0232 ,  G10L25/27

摘要： A post-processing method for a speech decoder which outputs a decoded speech signal in the time domain provides high frequency resolution based on a frequency spectrum having non-harmonic and noise deficiencies. This is obtained by transforming the decoded time domain signal to a frequency domain signal by using a high frequency resolution transform (FFT). Then an analysis of the energy distribution of the frequency domain signal is made throughout its frequency area (4 kHz) to find the disturbing frequency components and to prioritize such frequency components which are situated in the higher part of the frequency spectrum. Next, the suppression degree for the disturbing frequency components is found based on prioritizing. Finally the steps of controlling a post-filtering of the transform in dependence of the finding, and inverse transforming the post-filtered transform in order to obtain a post-filtered decoded speech signal in the time domain are performed.

摘要翻译： 用于在时域中输出解码语音信号的语音解码器的后处理方法基于具有非谐波和噪声缺陷的频谱提供高频分辨率。 这是通过使用高频分辨率变换（FFT）将解码的时域信号变换为频域信号而获得的。 然后在其频率区域（4kHz）中对频域信号的能量分布进行分析，以找到干扰频率分量，并对位于频谱的较高部分中的这种频率分量进行优先排序。 接下来，基于优先级来找到干扰频率分量的抑制度。 最后，执行根据发现来控制变换的后置滤波的步骤，以及逆时变逆变换以便在时域中获得后滤波的解码语音信号。

公开(公告)号：US20120014514A1

公开(公告)日：2012-01-19

申请号：US13179239

申请日：2011-07-08

申请人： Niklas Enbom ,  Roar Hagen ,  Jan Skoglund

发明人： Niklas Enbom ,  Roar Hagen ,  Jan Skoglund

IPC分类号： G01R29/26 ,  H04M3/22

CPC分类号： H04M3/561 ,  H04M3/18 ,  H04M2201/12

摘要： A method and an apparatus for indicating presence of a transient noise in a call are provided. The method comprises the steps of determining activity at an endpoint of the call by monitoring presence of a signal input from the endpoint into the call and monitoring presence of a potential source of transient noise at the endpoint. Further, based on the activity determination and the monitoring of the presence of a potential source of transient noise, a signal representative of the presence of a transient noise in the call is sent. The present invention is advantageous in that it enables improvement of the quality of the call.

摘要翻译： 提供一种用于指示呼叫中的瞬态噪声的存在的方法和装置。 该方法包括以下步骤：通过监视从端点输入到呼叫中的信号的存在来确定呼叫的端点处的活动，并监视端点处潜在的瞬态噪声源的存在。 此外，基于活动确定和对潜在的瞬时噪声源的存在的监视，发送表示呼叫中存在瞬态噪声的信号。 本发明的优点在于能够提高呼叫的质量。

公开(公告)号：US20070274540A1

公开(公告)日：2007-11-29

申请号：US11798140

申请日：2007-05-10

申请人： Roar Hagen ,  Niklas Enbom

发明人： Roar Hagen ,  Niklas Enbom

IPC分类号： H04B1/00 ,  H04B1/20

CPC分类号： H04R3/005 ,  H04M3/563 ,  H04M3/569 ,  H04M2201/18

摘要： The invention relates to a method and an apparatus for mixing audio signals. The invention is based on the idea to base selection of what audio channels to mix on the dynamic behaviour of the audio channels in terms of whether they are active or not, rather than basing the selection on quantative measures of the audio channels. According to the invention, a set of audio channels are arranged in a mixing stack and a mixed audio signal is produced from the topmost channels above a predetermined threshold level in the stack. Whenever a channel becomes active, it is placed at the top of the stack.

摘要翻译： 本发明涉及一种用于混合音频信号的方法和装置。 本发明基于这样的想法，即基于音频信道的动态行为来选择哪些音频信道是否被激活，而不是基于对音频信道的量化度量的选择。 根据本发明，一组音频通道被布置在混合堆栈中，并且混合音频信号从堆叠中的预定阈值电平以上的最上面的信道产生。 每当一个通道变为活动状态时，它将被放置在堆栈的顶部。

公开(公告)号：US07124079B1

公开(公告)日：2006-10-17

申请号：US09391768

申请日：1999-09-08

申请人： Ingemar Johansson ,  Erik Ekudden ,  Roar Hagen

发明人： Ingemar Johansson ,  Erik Ekudden ,  Roar Hagen

IPC分类号： G10L21/02

CPC分类号： G10L19/012

摘要： The quality of comfort noise generated by a speech decoder during non-speech periods is improved by modifying comfort noise parameter values normally used to generate the comfort noise. The comfort noise parameter values are modified in response to variability information associated with a background noise parameter. The modified comfort noise parameter values are then used to generate the comfort noise.

摘要翻译： 通过改变通常用于产生舒适噪声的舒适噪声参数值来改善在非语音周期期间由语音解码器产生的舒适噪声的质量。 响应于与背景噪声参数相关联的变异性信息修改舒适噪声参数值。 然后使用改进的舒适噪声参数值来产生舒适噪声。

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。

公开(公告)号：US06732069B1

公开(公告)日：2004-05-04

申请号：US09396300

申请日：1999-09-15

申请人： Erik Ekudden ,  Roar Hagen

发明人： Erik Ekudden ,  Roar Hagen

IPC分类号： G10L1904

CPC分类号： G10L19/083

摘要： A linear predictive analysis-by-synthesis encoder includes a search algorithm block (50) and a vector quantizer (58) for vector quantizing optimal gains from a plurality of subframes in a frame. The internal encoder states are updated (50, 52, 54, 56) using the vector quantized gains.

摘要翻译： 线性预测分析合成编码器包括搜索算法块（50）和矢量量化器（58），用于矢量量化来自帧中的多个子帧的最佳增益。 使用向量量化增益更新内部编码器状态（50,52,54,56）。