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1. 发明公开

EP2543039A4 SOURCE CODE ADAPTION BASED ON COMMUNICATION LINK QUALITY AND SOURCE CODING DELAY. 有权
标题翻译： QUELLCODEDAPATION根据通信接触质量和源代码DELAY
公开(公告)号：EP2543039A4
公开(公告)日：2017-03-15
申请号：EP10847113
申请日：2010-03-02
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： BRUHN STEFAN
IPC分类号： G10L19/10 , G10L19/12 , G10L19/18 , G10L19/22 , G10L19/24 , H04L1/00 , H04L29/06 , H04M7/00
CPC分类号： H04L65/607 , G10L19/12 , G10L19/18 , G10L19/22 , G10L19/24 , H04L1/0014 , H04L65/602 , H04L65/80 , H04M7/0072
摘要： Method and arrangement in a network node for adapting a property of source coding to the quality of a communication link in packet switched conversational services in a communication system. The method comprises obtaining (404) information related to the quality of a communication link. The method further comprises selecting (406) a source coding mode with an associated source coding delay, based on the obtained information and the associated source coding delay. The selected source coding mode is selected from a set of at least two source coding modes associated with different source coding delays, and is to be used when source coding voice data to be transmitted over the communication link.

2. 发明授权

EP2157573B1 AN ENCODING AND DECODING METHOD 有权
标题翻译：编码和解码方法的方法
公开(公告)号：EP2157573B1
公开(公告)日：2014-11-26
申请号：EP08734199.6
申请日：2008-04-29
申请人： Huawei Technologies Co., Ltd.
发明人： MA, Fuwei , ZHANG, Dejun
IPC分类号： G10L19/08 , G10L19/10
CPC分类号： H03M7/3082 , G10L19/08 , G10L19/10
摘要： A coding method, a decoding method, a coder, and a decoder are disclosed herein. A coding method includes: obtaining pulse distribution about how all the pulses to be encoded on a track are distributed on the track; determining a distribution identifier for identifying the pulse distribution according to the pulse distribution; and generating a coding index that carries the distribution identifier. A decoding method includes: receiving a coding index; extracting the distribution identifier from the coding index, where the distribution identifier identifies the pulse distribution about how all the pulses encoded on a track are distributed on the track; determining the pulse distribution about how all the pulses encoded on a track are distributed on the track according to the distribution identifier; and reconstructing the pulse order on the track according to the pulse distribution.

3. 发明授权

EP1760695B1 Orthogonalization search for the CELP based speech coding 有权
标题翻译： Orthogonalisierungssuche基于CELP语音编码
公开(公告)号：EP1760695B1
公开(公告)日：2013-04-24
申请号：EP06025740.9
申请日：1998-10-22
申请人： Panasonic Corporation
发明人： Yasunaga, Kazutoshi , Morii, Toshiyuki
IPC分类号： G10L19/10
CPC分类号： G10L19/10 , G10L19/107 , G10L19/12
摘要： A speech coding method and a speech coder operating according to the code excited linear prediction paradigm. A random codevector is chosen using an orthogonalization search. Said search determines an optimum random excitation gain minimizing a distortion function. The denominator of the gain function is determined using preprocessed matrices determined in advance and depending on the adaptive codevector and synthesis filter matrix in order to reduce the amount of filtering operations during the search of the random codebook.

4. 发明公开

EP2543039A1 SOURCE CODE ADAPTION BASED ON COMMUNICATION LINK QUALITY AND SOURCE CODING DELAY. 有权
标题翻译： QUELLCODEDAPATION JE NACHKOMMUNIKATIONSVERBINDUNGSQUALITÄTUNDQUELLENCODIERUNGSVERZÖGERUNG
公开(公告)号：EP2543039A1
公开(公告)日：2013-01-09
申请号：EP10847113.7
申请日：2010-03-02
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： BRUHN, Stefan
IPC分类号： G10L19/10 , H04M7/00
CPC分类号： H04L65/607 , G10L19/12 , G10L19/18 , G10L19/22 , G10L19/24 , H04L1/0014 , H04L65/602 , H04L65/80 , H04M7/0072
摘要： Method and arrangement in a network node for adapting a property of source coding to the quality of a communication link in packet switched conversational services in a communication system. The method comprises obtaining (404) information related to the quality of a communication link. The method further comprises selecting (406) a source coding mode with an associated source coding delay, based on the obtained information and the associated source coding delay. The selected source coding mode is selected from a set of at least two source coding modes associated with different source coding delays, and is to be used when source coding voice data to be transmitted over the communication link.
摘要翻译：网络节点中的方法和布置，用于使源编码的属性适应通信系统中分组交换对话服务中的通信链路的质量。该方法包括获得（404）与通信链路的质量有关的信息。该方法还包括基于获得的信息和相关联的源编码延迟来选择（406）具有相关联的源编码延迟的源编码模式（406）。选择的源编码模式是从与不同源编码延迟相关联的至少两个源编码模式的集合中选择的，并且将在通过通信链路发送源编码语音数据时使用。

5. 发明授权

EP1859441B1 LOW-COMPLEXITY CODE EXCITED LINEAR PREDICTION ENCODING 有权
标题翻译：有点复杂代码激励线性预测编码
公开(公告)号：EP1859441B1
公开(公告)日：2011-06-15
申请号：EP05722196.2
申请日：2005-03-09
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： TALEB, Anisse
IPC分类号： G10L19/10 , G10L19/00
CPC分类号： G10L19/008 , G10L19/10
摘要： Information (km) about excitation signals of a first signal (sm(n)) encoded by CELP is used to derive a limited set (10') of candidate excitation signals for a second correlated second signal (ss(n)). Preferably, pulse locations of the excitation signals of the first encoded signal (sm(n)) are used for determining the set (10') of candidate excitation signals. More preferably, the pulse locations of the set of candidate excitation signals are positioned in the vicinity of the pulse locations of the excitation signals of the first encoded signal (sm(n)). The first and second signals (sm(n), ss(n)) may be multi-channel signals of a common speech or audio signal. However, the first and second signals (sm(n), ss(n)) may also be identical, whereby the coding of the second signal (ss(n)) can be utilized for re-encoding at a lower bit rate.

6. 发明公开

EP1847988A4 PULSE ALLOCATING METHOD IN VOICE CODING 有权
标题翻译：脉冲分配方法票编码
公开(公告)号：EP1847988A4
公开(公告)日：2010-12-29
申请号：EP06713401
申请日：2006-02-09
申请人： PANASONIC CORP
发明人： TEO CHUN WOEI , NEO SUA HONG , YOSHIDA KOJI , GOTO MICHIYO
IPC分类号： G10L19/10 , G10L19/00
CPC分类号： G10L19/10 , G10L19/008

7. 发明公开

EP2239730A2 Speech coding apparatus 审中-公开
标题翻译： Sprachcodiervorrichtung
公开(公告)号：EP2239730A2
公开(公告)日：2010-10-13
申请号：EP10169435.4
申请日：2000-03-02
申请人： Panasonic Corporation
发明人： Ehara, Hiroyuki , Morii, Toshiyuki
IPC分类号： G10L19/10 , H03M7/30
CPC分类号： G10L19/107 , G10L19/10 , G10L2019/0008
摘要： The total number of entries of an algebraic codebook is decreased by liming a random code vector generated from the algebraic codebook, and entries of a random codebook with a large number of pulses are assigned to a decreased portion. Further, the number of entries of the decreased portion is adaptively switched according to a mode.
摘要翻译：代数码本的条目总数通过使从代数码本生成的随机码矢量变小而减少，并且具有大量脉冲的随机码本的条目被分配给减少的部分。此外，根据模式自适应地切换减少部分的条目数。

8. 发明公开

EP1697925A4 METHOD AND APPARATUS FOR SPEECH CODING 无效
标题翻译：方法和设备语音编码
公开(公告)号：EP1697925A4
公开(公告)日：2009-07-08
申请号：EP04814785
申请日：2004-12-17
申请人： MOTOROLA INC
发明人： JASIUK MARK A , RAMABADRAN TENKASI V , MITTAL UDAR , ASHLEY JAMES P , MCLAUGHLIN MICHAEL J
IPC分类号： G10L11/04 , G10L19/00 , G10L19/04 , G10L19/08 , G10L19/10 , G10L19/12
CPC分类号： G10L19/09
摘要： A method (Fig. 9) and apparatus (500, 600) for prediction in a speech-coding system extends a 1st order long-term predictor (LTP) filter, using a sub-sample resolution delay, to a multi-tap LTP filter (504, 604). From another perspective, a conventional integer-sample resolution multi-tap LTP filter is extended to use sub-sample resolution delay. Such a multi-tap LTP filter offers a number of advantages over the prior-art. Particularly, defining the lag with sub-sample resolution makes it possible to explicitly model the delay values that have a fractional component, within the limits of resolution of the over-sampling factor used by the interpolation filter. The coefficients (ßi's) of the multi-tap LTP filter are thus largely freed from modeling the effect of delays that have a fractional component. Consequently their main function is to maximize the prediction gain of the LTP filter via modeling the degree of periodicity that is present and by imposing spectral shaping.

9. 发明公开

EP2028650A2 Speech pulse location search for speech coding 审中-公开
标题翻译：精神错乱
公开(公告)号：EP2028650A2
公开(公告)日：2009-02-25
申请号：EP08019950.8
申请日：2000-10-24
申请人： Mitsubishi Denki Kabushiki Kaisha
发明人： Tasaki, Hirohisa , Yamaura, Tadashi
IPC分类号： G10L19/10
CPC分类号： G10L19/107
摘要： A speech coding apparatus comprises a repetition period pre-selecting unit for generating a plurality of candidates for the repetition period of a driving excitation source by multiplying the repetition period of an adaptive excitation source by a plurality of constant numbers, respectively, and for pre-selecting a predetermined number of candidates from all the candidates generated. A driving excitation source coding unit provides both excitation source location information and excitation source polarity information that minimize a coding distortion, for each of the predetermined number of candidates, and provides an evaluation value associated with the minimum coding distortion for each of the predetermined number of candidates. A repetition period coding unit compares the evaluation values provided for the predetermined number of candidates with one another, selects one candidate from the predetermined number of candidates according to the comparison result, and furnishes selection information indicating the selection result, excitation source location code, and polarity code.
摘要翻译：基于使用相关修正来确定用于产生激励源的多个脉冲的位置的语音编码方法和装置。

10. 发明授权

EP1677287B1 A system and method for supporting dual speech codecs 有权
标题翻译：系统和方法支持双语音编解码器
公开(公告)号：EP1677287B1
公开(公告)日：2008-10-22
申请号：EP05257814.3
申请日：2005-12-19
申请人： STMicroelectronics Asia Pacific Pte Ltd.
发明人： Singh, Ravindra , Krishna, Anoop K.
IPC分类号： G10L19/10
CPC分类号： G10L19/107 , G10L2019/0013
摘要： The preferred embodiment addresses the fixed codebook search portion of the speech codec, to efficiently support two codecs by a single implementation. In particular, the two codecs are G.723.1 (5.3kbps) and G.729A. By modifying the fixed codebook search algorithm of G.723.1 to be similar to that of G.729A would advantageously result in a single fixed codebook search algorithm being used for both these codecs. Present G.723.1 fixed codebook search algorithms are based on "Focused Nested-loop search". Proposing a new G.723.1 codebook search algorithm to be based on "Depth-first tree search" would then have the desired effect of having one fixed codebook search for both G.723.1 and G.729A.

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