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公开(公告)号：US06816511B1
公开(公告)日：2004-11-09
申请号：US09308976
申请日：1999-08-16
IPC分类号： H04J312
CPC分类号： H04W88/181
摘要： Transcoder apparatus is designed to transcode a receive signal (UR) into a transmit signal (UE). For this purpose, it includes a signaling transmitting member (14) for producing a signaling message and for introducing it into the transmit signal by stealing bits from said signal. According to the invention, the signaling transmitter member (14) also comprises a tone generator (15) to add a tone signal (UTS) to the transmit signal (UE) prior to applying the signaling message to said transmit signal.
摘要翻译： 转码器装置被设计为将接收信号（UR）转码为发送信号（UE）。 为此，它包括用于产生信令消息并通过从所述信号窃取比特来将其引入发送信号的信令发送构件（14）。 根据本发明，信令发送器构件（14）还包括音调发生器（15），用于在将信令消息应用于所述发送信号之前向发送信号（UE）添加音调信号（UTS）。
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2.发明授权
公开(公告)号：US5995923A
公开(公告)日：1999-11-30
申请号：US883353
申请日：1997-06-26
CPC分类号： G10L19/16 , H04W88/181
摘要： In recent years, the telecommunications industry has witnessed the proliferation of a variety of digital vocoders in order to meet bandwidth demands of different wireline and wireless communication systems. The rapid growth in the diversity of networks and the number of users of such networks is increasing the number of instances where two vocoders are placed in tandem to serve a single connection. Such arrangements of low bit-rate codecs can degrade the quality of the transmitted speech. To overcome this problem the invention provides a novel method and an apparatus for transmitting digitized voice signals in the wireless communications environment. The apparatus is capable of converting a compressed speech signal from one format to another format via an intermediate common format, thus avoiding the necessity to successively de-compress voice data to a PCM type digitization and then recompress the voice data.
摘要翻译： 近年来，电讯业目睹了各种数字声码器的扩散，以满足不同有线和无线通讯系统的带宽需求。 网络的多样性的快速增长和这种网络的用户数量正在增加两个声码器串联放置以服务于单个连接的情况的数量。 低比特率编解码器的这种布置可能会降低发送语音的质量。 为了克服这个问题，本发明提供了一种用于在无线通信环境中发送数字化语音信号的新颖方法和装置。 该装置能够通过中间公共格式将压缩的语音信号从一种格式转换成另一格式，从而避免必须将语音数据连续解压缩到PCM型数字化，然后再重新压缩语音数据。
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3.发明授权Analysis-by-synthesis speech coding method with truncation of the impulse response of a perceptual weighting filter 失效具有截短感知加权滤波器的脉冲响应的综合语音编码方法
公开(公告)号：US5963898A
公开(公告)日：1999-10-05
申请号：US860746
申请日：1997-10-22
申请人： William Navarro , Michel Mauc
发明人： William Navarro , Michel Mauc
IPC分类号： G10L19/083 , G10L19/10 , G10L25/24 , G10L25/93 , G10L3/02
CPC分类号： G10L19/083 , G10L19/10 , G10L25/24 , G10L25/93
摘要： A linear prediction analysis is performed for each frame of a speech signal to determine the coefficients of a short-term synthesis filter and an open-loop analysis is performed to determine a degree of frame voicing. At least one closed-loop analysis is performed for each sub-frame to determine an excitation sequence which, when applied to the short-term synthesis filter, generates a synthetic signal representative of the speech signal. Each closed-loop analysis uses the impulse response of a filter consisting of the short-term synthesis filter and a perceptual weighting filter, by truncating the impulse response to a truncation length that is no greater than the number of samples per sub-frame and is dependent on the energy distribution of the response and the degree of voicing of the frame.
摘要翻译： PCT No.PCT / FR96 / 00006 Sec。 371日期1997年10月22日第 102（e）日期1997年10月22日PCT 1996年1月3日PCT PCT。 出版物WO96 / 21220 PCT 日期1996年7月11日对语音信号的每个帧执行线性预测分析，以确定短期合成滤波器的系数，并且执行开环分析以确定帧发音的程度。 对每个子帧执行至少一个闭环分析以确定当施加到短期合成滤波器时产生表示语音信号的合成信号的激励序列。 每个闭环分析使用由短期合成滤波器和感知加权滤波器组成的滤波器的脉冲响应，通过将脉冲响应截断为不大于每个子帧的样本数量的截断长度，并且是 取决于响应的能量分布和帧的发声程度。
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4.发明授权Analysis-by-synthesis speech coding method with open-loop and closed-loop search of a long-term prediction delay 失效具有开环和闭环搜索的长期预测延迟的综合语音编码方法
公开(公告)号：US5974377A
公开(公告)日：1999-10-26
申请号：US860673
申请日：1997-10-14
申请人： William Navarro , Michel Mauc
发明人： William Navarro , Michel Mauc
摘要： A method comprising the steps of performing a linear prediction analysis of a speech signal digitized in a series of frames divided into sub-frames, in order to determine the parameters of a short-term synthesis filter; carrying out an open loop analysis to detect voiced signal frames and determine, for each voice frame, a degree of signal voicing and a long-term prediction delay search interval containing a number of delays depending on the degree of voicing; carrying out a closed-loop predictive analysis of the speech signal to select, for at least some sub-frames of the voiced frames, a long-term prediction delay contained in the search interval and constituting a long-term synthesis filter parameter; and determining a stochastic excitation for each sub-frame, to minimize a perceptually weighted deviation between the speech signal and the stochastic excitation filtered by the long-term and short-term synthesis filters.
摘要翻译： PCT No.PCT / FR96 / 00004 Sec。 371日期1997年10月14日第 102（e）日期1997年10月14日PCT 1996年1月3日PCT PCT。 出版物WO96 / 21218 PCT 日期：1996年7月11日一种方法，包括以下步骤：对分成子帧的一系列帧中数字化的语音信号进行线性预测分析，以确定短期合成滤波器的参数; 进行开环分析以检测有声信号帧，并且针对每个语音帧确定包含根据发音程度的多个延迟的信号发声程度和长期预测延迟搜索间隔; 对所述语音信号进行闭环预测分析，对于所述有声帧的至少一些子帧，选择包含在所述搜索间隔中并构成长期合成滤波器参数的长期预测延迟; 并确定每个子帧的随机激励，以最小化语音信号与由长期和短期合成滤波器滤波的随机激励之间的感知加权偏差。
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公开(公告)号：US08194649B2
公开(公告)日：2012-06-05
申请号：US12458883
申请日：2009-07-27
IPC分类号： H04L12/66
CPC分类号： H04M7/0027 , H04L12/6418 , H04L69/08 , H04L69/24 , H04L2012/6486 , H04M3/08
摘要： Data communication apparatus including a port and a control entity. The control entity is operative to establish a connection with a remote entity over a first path and negotiate with the remote entity using in-band signaling over the first path establishment of a second path allowing the exchange of data between the data communication apparatus and the remote entity. The invention presents advantages from the standpoint of ease of implementation and bandwidth and resource savings. The use of an in-band messaging protocol to negotiate a establishment of the second path can be implemented generally in a straight forward manner. At the same time, the ability to transfer at least part of the connection to the second path avoids the drawbacks that would arise if that part of the connection were constrained to the first path. This feature allows the operator to take advantage of benefits provided by the second path but not available to the first path.
摘要翻译： 包括端口和控制实体的数据通信装置。 控制实体可操作以通过第一路径与远程实体建立连接，并使用允许在数据通信设备和远端之间的数据交换的第二路径的第一路径建立的带内信令与远程实体进行协商 实体。 从实现的方便性和带宽和资源节省的观点出发，本发明具有优点。 通常使用带内消息协议来协商第二路径的建立通常以直接方式实现。 同时，将连接的至少一部分传送到第二路径的能力避免了如果连接的那部分被限制到第一路径时会出现的缺点。 该特征允许操作者利用由第二路径提供的优点，但不能用于第一路径。
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公开(公告)号：US06324515B1
公开(公告)日：2001-11-27
申请号：US09088895
申请日：1998-06-02
申请人： Rafi Rabipour , Paul Coverdale , William Navarro
发明人： Rafi Rabipour , Paul Coverdale , William Navarro
IPC分类号： G10L2104
CPC分类号： G10L19/00
摘要： This invention relates to a method and an apparatus for processing digital audio signals that may reduce the signal degradation occurring when the signal is exchanged between two communication terminals equipped with vocoders in a communication network. The solution proposed by this invention is to provide a communication terminal with a vocoder including a decoder section provided with a plurality of decoding units. A switch activates a selected one of the decoding units in dependence of the format of the compressed audio signal data frames received from a remote communication terminal. This system allows the communication terminal to support a number of different speech compression formals. In order to achieve simplicity and low cost, the communication terminal is provided with a single encoding unit. This results in an asymmetric arrangement where the communication terminal has a large number of decoding units than encoding units. The great majority of the speech compression algorithms deployed in wireless and Internet telephony standards have the property that their speech decoders are of far less computational complexity than their respective speech encoder. Therefore, a low-cost terminal can be produced which supports a low complexity speech encoder unit and a variety of speech decoder units.
摘要翻译： 本发明涉及一种用于处理数字音频信号的方法和装置，其可以减少在通信网络中配备声码器的两个通信终端之间交换信号时发生的信号劣化。 本发明提出的解决方案是提供一种具有声码器的通信终端，该声码器包括设置有多个解码单元的解码器部分。 开关根据从远程通信终端接收的压缩音频信号数据帧的格式来激活所选择的解码单元。 该系统允许通信终端支持多种不同的语音压缩形式。 为了实现简单性和低成本，通信终端设置有单个编码单元。 这导致非对称布置，其中通信终端具有比编码单元大的解码单元数量。 部署在无线和因特网电话标准中的绝大多数语音压缩算法具有这样的性质：它们的语音解码器的计算复杂度远远低于它们各自的语音编码器。 因此，可以制造支持低复杂性语音编码器单元和各种语音解码器单元的低成本终端。
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7.发明授权
公开(公告)号：US5899968A
公开(公告)日：1999-05-04
申请号：US860799
申请日：1997-10-14
申请人： William Navarro , Michel Mauc
发明人： William Navarro , Michel Mauc
CPC分类号： G10L19/10
摘要： A linear prediction analysis is performed for each frame of a speech signal to determine the coefficients of a short-Term synthesis filter. For each sub-frame, an excitations sequence which, when applied to the short-term synthesis filter generates a synthetic signal representative of the speech signal, is determined by means of an iterative process in which a symmetrical matrix B.sub.n, is gradually built up with each iteration. The matrix B.sub.n is reversed with each iteration by decomposing the pattern B.sub.n =L.sub.n .multidot.R.sub.n.sup.T with L.sub.n =R.sub.n .multidot.K.sub.n where L.sub.n and R.sub.n are triangular matrices and K.sub.n is a diagonal matrix, and matrix L.sub.n has only 1s on its main diagonal.
摘要翻译： PCT No.PCT / FR96 / 00005 Sec。 371日期1997年10月14日第 102（e）日期1997年10月14日PCT 1996年1月3日PCT PCT。 出版物WO96 / 21219 日期1996年7月11日对语音信号的每个帧执行线性预测分析，以确定短期合成滤波器的系数。 对于每个子帧，当施加到短期合成滤波器产生代表语音信号的合成信号时，通过迭代过程来确定兴奋序列，其中对称矩阵Bn逐渐与 每次迭代。 通过用Ln = RnxKn分解图形Bn = LnxRnT，其中Ln和Rn是三角矩阵，Kn是对角矩阵，并且矩阵Ln在其主对角线上只有1s，矩阵Bn被反转。
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公开(公告)号：US08116335B2
公开(公告)日：2012-02-14
申请号：US11984490
申请日：2007-11-19
CPC分类号： H04L12/66 , H04L12/6418 , H04L69/08 , H04L69/24 , H04L2012/6486 , H04M3/08 , H04M7/0027 , H04W76/12
摘要： A data communication apparatus, comprising an interface for enabling communication with a remote entity via a network and a control entity in communication with said interface. The control entity is operative to establish a packet-switched connection with the remote entity through the network and to negotiate with the remote entity using in-band signaling entry into a codec-bypass mode of operation. In this way, a codec-bypass connection, which enhances speech quality, can be established over a packet network, which reduces bandwidth.
摘要翻译： 一种数据通信装置，包括用于经由网络和与所述接口通信的控制实体与远程实体进行通信的接口。 控制实体可操作以通过网络与远程实体建立分组交换连接，并使用带内信令进入编解码器旁路操作模式与远程实体进行协商。 以这种方式，可以通过分组网络建立增强语音质量的编解码器旁路连接，从而降低带宽。
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公开(公告)号：US20100039949A1
公开(公告)日：2010-02-18
申请号：US12458883
申请日：2009-07-27
IPC分类号： H04L12/26
CPC分类号： H04M7/0027 , H04L12/6418 , H04L69/08 , H04L69/24 , H04L2012/6486 , H04M3/08
摘要： Data communication apparatus including a port and a control entity. The control entity is operative to establish a connection with a remote entity over a first path and negotiate with the remote entity using in-band signaling over the first path establishment of a second path allowing the exchange of data between the data communication apparatus and the remote entity. The invention presents advantages from the standpoint of ease of implementation and bandwidth and resource savings. The use of an in-band messaging protocol to negotiate a establishment of the second path can be implemented generally in a straight forward manner. At the same time, the ability to transfer at least part of the connection to the second path avoids the drawbacks that would arise if that part of the connection were constrained to the first path. This feature allows the operator to take advantage of benefits provided by the second path but not available to the first path.
摘要翻译： 包括端口和控制实体的数据通信装置。 控制实体可操作以通过第一路径建立与远程实体的连接，并使用通过允许在数据通信设备和远端之间的数据交换的第二路径的第一路径建立的带内信令来与远程实体进行协商 实体。 从实现的方便性和带宽和资源节省的观点出发，本发明具有优点。 通常使用带内消息协议来协商第二路径的建立通常以直接方式实现。 同时，将连接的至少一部分传送到第二路径的能力避免了如果连接的那部分被限制到第一路径时会出现的缺点。 该特征允许操作者利用由第二路径提供的优点，但不能用于第一路径。
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公开(公告)号：US07639601B2
公开(公告)日：2009-12-29
申请号：US10235959
申请日：2002-09-06
IPC分类号： G01R31/08
CPC分类号： H04M7/0027 , H04L12/6418 , H04L69/08 , H04L69/24 , H04L2012/6486 , H04M3/08
摘要： Data communication apparatus including a port and a control entity. The control entity is operative to establish a connection with a remote entity over a first path and negotiate with the remote entity using in-band signaling over the first path establishment of a second path allowing the exchange of data between the data communication apparatus and the remote entity. The invention presents advantages from the standpoint of ease of implementation and bandwidth and resource savings. The use of an in-band messaging protocol to negotiate a establishment of the second path can be implemented generally in a straight forward manner. At the same time, the ability to transfer at least part of the connection to the second path avoids the drawbacks that would arise if that part of the connection were constrained to the first path. This feature allows the operator to take advantage of benefits provided by the second path but not available to the first path.
摘要翻译： 包括端口和控制实体的数据通信装置。 控制实体可操作以通过第一路径建立与远程实体的连接，并使用通过允许在数据通信设备和远端之间的数据交换的第二路径的第一路径建立的带内信令来与远程实体进行协商 实体。 从实现的方便性和带宽和资源节省的观点出发，本发明具有优点。 通常使用带内消息协议来协商第二路径的建立通常以直接方式实现。 同时，将连接的至少一部分传送到第二路径的能力避免了如果连接的那部分被限制到第一路径时会出现的缺点。 该特征允许操作者利用由第二路径提供的优点，但不能用于第一路径。
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