-
公开(公告)号：US6078879A
公开(公告)日：2000-06-20
申请号：US114749
申请日：1998-07-13
摘要： In a harmonic speech encoder (16) a speech signal to be encoded is represented by a plurality of LPC parameters which are determined by a LPC parameter computer (30), a pitch value and a gain value. The speech encoder comprises a (coarse) pitch estimator (38) for determining a coarse pitch, and a refined pitch computer (32) to determine a refined pitch from the coarse pitch value. The refined pitch value is determined in an analysis by synthesis way, in which a refined pitch value is selected which results in a minimum error measure between a representation of a synthesized speech signal and a representation of the original speech signal.
摘要翻译： 在谐音语音编码器（16）中，要由LPC参数计算机（30）确定的多个LPC参数，音调值和增益值来表示要编码的语音信号。 语音编码器包括用于确定粗音调的（粗）音调估计器（38）和精调音调计算机（32），用于根据粗音调值确定精细音调。 在通过合成方式的分析中确定精细音调值，其中选择精细音调值，其导致合成语音信号的表示和原始语音信号的表示之间的最小误差测量。
-
2.发明授权
公开(公告)号：US6157907A
公开(公告)日：2000-12-05
申请号：US18980
申请日：1998-02-05
申请人： Rakesh Taori , Andreas J. Gerrits
发明人： Rakesh Taori , Andreas J. Gerrits
摘要： A transmission system wherein a speech signal is represented by a plurality of prediction parameters updated once per frame. Each frame comprises a plurality of sub-frames in which an excitation signal generated by a fixed codebook and an adaptive codebook is updated. In order to enhance the reconstructed speech quality the prediction coefficients are interpolated at the decoder by an LPC coefficient interpolator to obtain interpolated prediction coefficients for each sub-frame. According to the present invention the interpolation of the prediction coefficients is not based on the prediction coefficients used for transmission, such as reflection coefficients or Log Area Ratios, but on Line Spectral Frequencies. This reduces degradation of speech quality due to interpolation.
摘要翻译： 一种传输系统，其中语音信号由每帧更新一次的多个预测参数表示。 每个帧包括由固定码本和自适应码本生成的激励信号被更新的多个子帧。 为了增强重构的语音质量，LPC系数内插器在解码器中内插预测系数，以获得每个子帧的内插预测系数。 根据本发明，预测系数的内插不是基于用于传输的预测系数，例如反射系数或对数面积比，而是基于线谱频率。 这样可以减少内插引起的语音质量下降。
-
3.发明授权
公开(公告)号：US6128591A
公开(公告)日：2000-10-03
申请号：US114746
申请日：1998-07-13
CPC分类号： G10L19/18
摘要： In a speech encoder (4), a speech signal is encoded using a voiced speech encoder (16) and an unvoiced speech encoder (14). Both speech encoders (14,16) use analysis coefficients to represent the speech signal. The analysis coefficients are determined more frequently when a transition from voiced to unvoiced speech or vice versa is detected. This has been found to achieve significantly improved quality of speech reproduced from the encoded speech signal.
摘要翻译： 在语音编码器（4）中，使用有声语音编码器（16）和无声语音编码器（14）对语音信号进行编码。 两个语音编码器（14,16）使用分析系数来表示语音信号。 当检测到从有声到无声语音或反之亦然的转变时，更频繁地确定分析系数。 已经发现已经从编码的语音信号中获得显着提高的语音质量。
-
公开(公告)号：US06208274B1
公开(公告)日：2001-03-27
申请号：US09113964
申请日：1998-07-10
IPC分类号： H03M740
CPC分类号： H03M7/42
摘要： In a transmission system a variable length encoder is used to reduce the average bitrate of a sequence of symbols. In order to limit the maximum length of the code it is proposed to transmit the sequence of symbols only in coded form if the length of the coded sequence is lower than a predetermined value
摘要翻译： 在传输系统中，可变长度编码器用于减小符号序列的平均比特率。 为了限制代码的最大长度，如果编码序列的长度低于预定值，则建议仅以编码形式发送符号序列
-
公开(公告)号：US6012026A
公开(公告)日：2000-01-04
申请号：US52293
申请日：1998-03-31
申请人： Rakesh Taori , Andreas J. Gerrits
发明人： Rakesh Taori , Andreas J. Gerrits
IPC分类号： G10L19/02 , G10L11/00 , G10L19/04 , G10L19/12 , G10L19/14 , G10L19/18 , H03M7/30 , H04B14/04 , G10L9/14
摘要： A transmission system with a transmitter and a receiver. The transmitter has a speech encoder with analysis means, has calculation means, and has control means. The receiver has a speech decoder. Through a transmission medium, the transmitter transmits frames of data to the receiver. The analysis means determine analysis coefficients from a speech signal. From a bitrate setting, the calculation means calculate a fraction of the frames of data to carry more information about the analysis coefficients than a remaining number of the frames of data. The control means control the transmitter to transmit the fraction of the frames of data and to transmit the remaining number of the frames of data. The receiver receives the frames of data. The receiver derives a reconstructed speech signal from the received frames of data.
摘要翻译： 具有发射机和接收机的传输系统。 发射机具有分析装置的语音编码器，具有计算装置，并具有控制装置。 接收机具有语音解码器。 通过传输介质，发射机向接收机发送数据帧。 分析意味着从语音信号确定分析系数。 从比特率设置，计算装置计算数据帧的一部分以携带关于分析系数的更多信息，而不是数据帧的剩余数量。 控制装置控制发射机发送数据帧的分数，并发送数据帧的剩余数量。 接收器接收数据帧。 接收器从接收的数据帧导出重构的语音信号。
-
6.发明授权Introduction into incomplete data frames of additional coefficients representing later in time frames of speech signal samples 失效引入表示语音信号样本的时间帧之后的附加系数的不完整数据帧公开(公告)号：US06292774B1
公开(公告)日：2001-09-18
申请号：US09052292
申请日：1998-03-31
申请人： Rakesh Taori , Andreas J. Gerrits
发明人： Rakesh Taori , Andreas J. Gerrits
IPC分类号： G10L900
CPC分类号： G10L19/06 , G10L19/002 , G10L2019/0012
摘要： A transmission system has a speech encoder and a speech decoder. From frames of speech signal samples, the speech encoder derives data frames with coefficients representing the frames of speech signal samples. The data frames, that include complete and incomplete data frames, are transmitted to a speech decoder. As compared to a complete data frame, an incomplete data frame carries an incomplete set of coefficients. The speech decoder introduces additional coefficients into incomplete data frames. The additional coefficients represent frames of speech signal samples that are later in time than the frames of speech signal samples corresponding to the incomplete data frames. The speech decoder uses the additional coefficients to complete incomplete sets of coefficients.
摘要翻译： 传输系统具有语音编码器和语音解码器。 从语音信号样本帧中，语音编码器用表示语音信号样本帧的系数来导出数据帧。 包括完整和不完整的数据帧的数据帧被传送到语音解码器。 与完整的数据帧相比，不完整的数据帧带有不完整的系数集合。 语音解码器将附加系数引入不完整的数据帧。 附加系数表示在时间上比对应于不完整数据帧的语音信号样本的帧的语音信号样本的帧。 语音解码器使用附加系数来完成不完整的系数集合。
-
公开(公告)号：US6038530A
公开(公告)日：2000-03-14
申请号：US20606
申请日：1998-02-09
申请人： Rakesh Taori , Andreas J. Gerrits
发明人： Rakesh Taori , Andreas J. Gerrits
摘要： In a speech communication network in which a transmitter (1) transmits speech signals via a network (4) to a receiver (8), it can happen that more traffic is offered to the network (4) than it can handle. In order to reduce the network load, at least one node (24) is arranged to perform bitrate reduction to delete some of the prediction parameters representing the speech signal. It can also be the case that a receiver comprises a speech decoder having insufficient computational power available for decoding the encoded speech signal. In such case, the speech decoder is arranged for using only a part of the prediction parameters available. This results in a lower complexity of the synthesis filter (60).
摘要翻译： 在其中发射机（1）经由网络（4）向接收机（8）发送语音信号的语音通信网络中，可能发生的是，向网络（4）提供比它能够处理的更多的业务量。 为了减少网络负载，布置至少一个节点（24）以执行比特率降低以删除表示语音信号的一些预测参数。 也可以是接收机包括语音解码器，其具有可用于解码编码语音信号的计算能力不足。 在这种情况下，语音解码器被布置为仅使用可用的一部分预测参数。 这导致合成滤波器（60）的较低复杂度。
-
公开(公告)号：US09756188B2
公开(公告)日：2017-09-05
申请号：US11568959
申请日：2004-05-10
申请人： Jos den Hartog , Rakesh Taori
发明人： Jos den Hartog , Rakesh Taori
IPC分类号： H04M7/00
CPC分类号： H04M7/0057
摘要： The invention relates generally to a method for initiating an enhanced communication connection, between a calling party (A) and a called party (B), within a telecommunication network system comprising multiple interconnected networks, said enhanced communication connection comprising a circuit switched connection and a packet-switched connection, the method according to the invention is characterized in the steps of processing the setting up of said circuit-switched connection and said packet-switched connection based on one single response invoked by said called party (B). In one embodiment of the method the single response could be the pressing of a button or the selection of a displayed icon on a terminal.
-
9.发明授权公开(公告)号：US09515372B2
公开(公告)日：2016-12-06
申请号：US13549280
申请日：2012-07-13
申请人： Young-Bin Chang , Rakesh Taori
发明人： Young-Bin Chang , Rakesh Taori
CPC分类号： H01Q1/1257 , H01Q1/246 , H01Q3/26 , H04B7/0617 , H04B7/086
摘要： According to one embodiment, an apparatus for beamforming includes a detector for measuring at least one change of movement and rotation of an apparatus; and a calculator for determining a beamforming parameter for aligning a beam direction with another apparatus by compensating for the change of the beam direction according to at least one of the movement and the rotation.
摘要翻译： 根据一个实施例，用于波束成形的装置包括用于测量装置的运动和旋转的至少一个变化的检测器; 以及计算器，用于根据运动和旋转中的至少一个来补偿波束方向的变化，来确定用于使波束方向与另一装置对准的波束形成参数。
-
10.发明授权Communication system using hierarchical modulation scheme or network coding scheme 有权使用分层调制方案或网络编码方案的通信系统公开(公告)号：US08867427B2
公开(公告)日：2014-10-21
申请号：US12500515
申请日：2009-07-09
申请人： Rakesh Taori , Seung Woo Ko , Jung Min Park , Mi-Sun Do , Seong-Lyun Kim
发明人： Rakesh Taori , Seung Woo Ko , Jung Min Park , Mi-Sun Do , Seong-Lyun Kim
CPC分类号： H04B7/15521 , H04B7/15557 , H04L1/0077
摘要： A communication system using a hierarchical modulation scheme and/or a network coding scheme is provided. A relay node included in the communication system may generate a relay packet by applying a network coding scheme to a hierarchically modulated source packet and to a destination packet received from a destination node. The relay packet is transmitted to a source node and a destination node, and the source node and the destination node may extract a desired packet from a relay packet. The communication system also may adaptively determine an optimal communication mode.
摘要翻译： 提供了使用分层调制方案和/或网络编码方案的通信系统。 包括在通信系统中的中继节点可以通过将网络编码方案应用于分层调制的源分组和从目的地节点接收的目的分组来生成中继分组。 将中继分组发送到源节点和目的节点，源节点和目的节点可以从中继分组中提取所需分组。 通信系统还可以自适应地确定最佳通信模式。
-
-
-
-
-
-
-
-
-
搜索结果
114 条记录 (耗时 0.019 秒)
