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1.发明授权Method and apparatus for providing a multi-party speech connection for use in a wireless communication system 失效用于提供在无线通信系统中使用的多方语音连接的方法和装置
公开(公告)号：US6134232A
公开(公告)日：2000-10-17
申请号：US885234
申请日：1997-06-30
CPC分类号： H04M3/561 , H04M2203/1091 , H04M2207/18 , H04W4/00
摘要： An apparatus (200) for providing a multi-party speech connection for use in a wireless communication system (10). The apparatus (200) comprises a first speech encoder (202) producing a first encoded speech signal, a second speech encoder (20) producing a second encoded speech signal, a conference circuit (22), and a speech decoder (208) responsive to the conference circuit (22). The conference circuit (22) receives the first and second speech encoded signals and produces a multiplexed encoded speech signal. The speech decoder (208) receives the multiplexed encoded speech signal and produces a decoded speech signal.
摘要翻译： 一种用于提供在无线通信系统（10）中使用的多方语音连接的装置（200）。 该设备（200）包括产生第一编码语音信号的第一语音编码器（202），产生第二编码语音信号的第二语音编码器（20），会议电路（22）和响应于 会议电路（22）。 会议电路（22）接收第一和第二语音编码信号并产生复用的编码语音信号。 语音解码器（208）接收多路复用的编码语音信号并产生解码语音信号。
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2.发明授权Method and apparatus for control of vocoder bypass utilizing inband signaling 有权利用带内信号控制声码器旁路的方法和装置
公开(公告)号：US6070089A
公开(公告)日：2000-05-30
申请号：US229230
申请日：1999-01-12
CPC分类号： H04W88/181
摘要： Vocoder bypass is provided using a combination of out-of-band and in-band signaling. In preferred embodiments of the present invention, two signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels are communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.
摘要翻译： 使用带外和带内信令的组合来提供声码器旁路。 在本发明的优选实施例中，两个信令信道被布置用于在压缩语音内传输。 以优选的速率传送每个信令信道，以允许快速，可靠地检测指示声码器旁路操作模式的条件，并且以声码器旁路操作模式同步和通信压缩语音。
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公开(公告)号：US6091969A
公开(公告)日：2000-07-18
申请号：US138183
申请日：1998-08-21
CPC分类号： H04W88/181
摘要： Vocoder bypass is provided using in-band signaling. In preferred embodiments of the present invention, three signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels are communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation, to negotiate suitable vocoder type if necessary, and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.
摘要翻译： 使用带内信令提供声码器旁路。 在本发明的优选实施例中，三个信令信道被布置用于在压缩语音内传输。 以优选的速率传送每个信令信道，以允许快速，可靠地检测指示声码器旁路操作模式的条件，如果需要协商合适的声码器类型，以及在声码器旁路操作模式下同步和通信压缩语音。
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4.发明授权
公开(公告)号：US6049537A
公开(公告)日：2000-04-11
申请号：US926074
申请日：1997-09-05
CPC分类号： H04W28/20 , H04J3/1688 , H04B2201/70703 , H04W88/181
摘要： A method and system for controlling speech encoding in a communication system utilizes feedback information such as packet modification control data (154) sent from a communication link output controller, such as a network arbitor (142). The network arbitor (142) sends the packet modification control data (154) to a selected vocoder (146) to change the filter states of the selected vocoder (146) when the network arbitor (142) modifies an output speech packet communicated of a communication link (20), to facilitate improved convergence of a speech encoder and a speech decoder, such as a mobile subscriber unit.
摘要翻译： 用于控制通信系统中的语音编码的方法和系统利用诸如网络仲裁器（142）等通信链路输出控制器发送的分组修改控制数据（154）等反馈信息。 当网络仲裁器（142）修改通信通信的输出语音分组时，网络仲裁器（142）将分组修改控制数据（154）发送到所选择的声码器（146）以改变所选择的声码器（146）的滤波器状态 链路（20），以便于语音编码器和语音解码器（诸如移动用户单元）的改进的收敛。
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公开(公告)号：US07505764B2
公开(公告)日：2009-03-17
申请号：US10695009
申请日：2003-10-28
CPC分类号： H04L1/0014 , H04L1/1877 , H04W84/00
摘要： The invention provides a method of retransmitting a speech packet. In one embodiment, the method includes receiving (S702) at a transmitting device (140) a first negative acknowledgement (NACK) from a receiving device (120). The NAK indicates a corrupted first speech packet transmission. The transmitting device then retrieves (S706) a first speech packet associated with the first NACK and compresses (S714-S720) the speech packet to form a replacement speech packet. Next, a current segment of speech is encoded (S808) to form a current speech packet and current speech packet is combined with the replacements speech packet. The combined speech packet is then transmitted (S814) to the receiving device.
摘要翻译： 本发明提供一种重传语音分组的方法。 在一个实施例中，该方法包括在发送设备（140）处接收来自接收设备（120）的第一否定确认（NACK）（S702）。 NAK表示损坏的第一语音分组传输。 然后，发送装置检索（S706）与第一NACK相关联的第一语音分组，并压缩（S714-S720）语音分组以形成替换语音分组。 接下来，对当前语音段进行编码（S808）以形成当前语音分组，并将当前语音分组与替换语音分组组合。 然后将组合的语音分组发送（S814）到接收设备。
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6.发明授权Method and system for controlling an encoding rate in a variable rate communication system 失效用于控制可变速率通信系统中的编码速率的方法和系统
公开(公告)号：US5898696A
公开(公告)日：1999-04-27
申请号：US924602
申请日：1997-09-05
CPC分类号： H04W28/22 , H04B7/2659 , H04J3/1688 , H04W88/181
摘要： A method and system for controlling an encoding rate in a communication system utilizes feedforward rate information (48) and/or rate desirability information (50) sent from each of a plurality of variable rate vocoders (34) to a communication link output controller (24), such as a network arbitor. The communication link output controller (24) then sends a feedback control signal (32) to a selected variable rate vocoder to change the encoding rate of the selected variable rate vocoder to facilitate re-encoding of the speech packet when a bottleneck is detected. In another embodiment, the network arbitor (134) may additionally and independently modify speech packet data when it determines that a bottleneck may occur. The network arbitor (134) also communicates a packet modification control signal (132) for the variable rate vocoder that generated the dropped packet so that the corresponding variable rate vocoder can adjust its filter states to maintain convergence.
摘要翻译： 用于控制通信系统中的编码速率的方法和系统利用从多个可变速率声码器（34）中的每一个发送到通信链路输出控制器（24）的前馈速率信息（48）和/或速率可取性信息（50） ），例如网络仲裁器。 然后，当检测到瓶颈时，通信链路输出控制器（24）然后向所选择的可变速率声码器发送反馈控制信号（32）以改变所选择的可变速率声码器的编码速率，以便于语音分组的重新编码。 在另一个实施例中，当网络仲裁器确定可能出现瓶颈时，网络仲裁器（134）可附加且独立地修改语音分组数据。 网络仲裁器（134）还传送用于生成丢弃的分组的可变速率声码器的分组修改控制信号（132），使得相应的可变速率声码器可以调整其过滤状态以保持收敛。
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7.发明授权Method and apparatus for suppressing acoustic background noise in a communication system by equaliztion of pre-and post-comb-filtered subband spectral energies 有权通过前后梳状滤波的子带频谱能量的均衡来抑制通信系统中的声学背景噪声的方法和装置公开(公告)号：US06366880B1
公开(公告)日：2002-04-02
申请号：US09451074
申请日：1999-11-30
申请人： James Patrick Ashley
发明人： James Patrick Ashley
IPC分类号： G10L2102
CPC分类号： G10L21/0208
摘要： A noise suppression system implemented in communication system provides an improved level of quality during severe signal-to-noise ratio (SNR) conditions. The noise suppression system, inter alia, incorporates a frequency domain comb-filtering (289) technique which supplements a traditional spectral noise suppression method. The invention includes a real cepstrum generator (285) for an input signal (285) G(k) to produce a likely voiced speech pitch lag component and converting a result to frequency domain to obtain a comb-filter function (290) C(k), applying input signal (291) G(k) to comb-filter function (290) C(k), and equalizing the energies of the corresponding pre and post filtered subbands, to produce a signal (293) G″(k) to be used for noise suppression. This prevents high frequency components from being unnecessarily attenuated, thereby reducing muffling effects of prior art comb-filters.
摘要翻译： 在通信系统中实现的噪声抑制系统在严重的信噪比（SNR）条件下提供了改善的质量水平。 噪声抑制系统尤其包含频域梳状滤波（289）技术，其补充传统的频谱噪声抑制方法。 本发明包括用于输出信号（285）G（k）的真实倒谱发生器（285），以产生可能的有声语音音调滞后分量并将结果转换到频域以获得梳状滤波器函数（290）C（k ），将输入信号（291）G（k）应用于梳状滤波器函数（290）C（k），并且对相应的前和后滤波后的子带的能量进行均衡，以产生信号（293）G“ ）用于噪声抑制。 这防止高频分量被不必要地衰减，从而减少现有技术梳状滤波器的消音效果。
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公开(公告)号：US06415252B1
公开(公告)日：2002-07-02
申请号：US09086396
申请日：1998-05-28
申请人： Weimin Peng , James Patrick Ashley
发明人： Weimin Peng , James Patrick Ashley
IPC分类号： G10L1106
CPC分类号： G10L19/04 , G10L25/93 , G10L2019/0004
摘要： Bits are allocated to short-term repetition information for unvoiced input signals. Stated differently, more bits are allocated for pitch information during unvoiced input speech than in the prior art. The improved method and apparatus in an encoder (300) and decoder (700) result in improved consistency of amplitude pulses compared to prior art methods which indicates improved stability due to increased search resolution. Also, the improved method and apparatus result in higher energy compared to prior art methods which indicates that the synthesized waveform matches the target waveform more closely, resulting in a higher fixed codebook (FCB) gain.
摘要翻译： 位被分配给无声输入信号的短期重复信息。 换句话说，在清音输入语音中比现有技术更多的比特被分配用于音调信息。 与现有技术方法相比，编码器（300）和解码器（700）中改进的方法和装置导致振幅脉冲的一致性提高，这表明由于增加的搜索分辨率而提高了稳定性。 此外，与现有技术方法相比，改进的方法和装置导致更高的能量，这表明合成波形更加紧密地匹配目标波形，导致更高的固定码本（FCB）增益。
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公开(公告)号：US07283956B2
公开(公告)日：2007-10-16
申请号：US10245963
申请日：2002-09-18
CPC分类号： H04B1/1027
摘要： A method and apparatus for noise suppression is described herein. The channel gain is controlled based on a degree of variability of the background noise. The noise variability estimate is used in conjunction with a variable attenuation concept to produce a family of gain curves that are adaptively suited for a variety of combinations of long-term peak SNR and noise variability. More specifically, a measure of the variability of the background noise is used to provide an optimized threshold that reduces the occurrence of non-stationary background noise entering into the transition region of the gain curve.
摘要翻译： 本文描述了用于噪声抑制的方法和装置。 基于背景噪声的变化程度控制信道增益。 噪声可变性估计与可变衰减概念一起使用，以产生适应于长期峰值SNR和噪声变异性的各种组合的增益曲线族。 更具体地，使用背景噪声的可变性的度量来提供优化的阈值，其减少进入增益曲线的过渡区域的非平稳背景噪声的发生。
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10.发明授权Method and system for information signal coding using combinatorial and huffman codes 有权使用组合和huffman码的信息信号编码的方法和系统公开(公告)号：US06662154B2
公开(公告)日：2003-12-09
申请号：US10015871
申请日：2001-12-12
IPC分类号： G10L1910
摘要： The invention provides a method of coding an information signal. An information signal is represented by a sequence of pulses. A plurality of pulse parameters are determined based on the sequence of pulses including a non-zero pulse parameter corresponding to a number of non-zero pulse positions in the sequence of pulses. The non-zero pulse parameter is coded using a variable-length codeword.
摘要翻译： 本发明提供一种编码信息信号的方法。 信息信号由脉冲序列表示。 基于脉冲序列确定多个脉冲参数，脉冲序列包括对应于脉冲序列中的非零脉冲位置数量的非零脉冲参数。 非零脉冲参数使用可变长度码字进行编码。
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