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51. 发明授权

US07260523B2 Sub-band speech coding system 有权
标题翻译：子带语音编码系统
公开(公告)号：US07260523B2
公开(公告)日：2007-08-21
申请号：US09732337
申请日：2000-12-07
申请人： Erdal Paksoy , Alan V. McCree
发明人： Erdal Paksoy , Alan V. McCree
IPC分类号： G10L19/02
CPC分类号： G10L19/0208 , G10L21/038
摘要： An improved sub-band speech coding system is provided by subdividing signals into a lower an higher subband, downsampling the lower subband before coding and coding the higher subband without downsampling. The decoder includes decoding and upsampling of the lower subband and decoding the higher subband and adding the higher subband to the lower subband.
摘要翻译：通过将信号分割为更低的较高子带，在对低级子带进行编码和编码而不进行下采样之前对下部子带进行下采样来提供改进的子带语音编码系统。解码器包括对下部子带进行解码和上采样，并对较高子带进行解码，并将较高子带添加到较低子带。

52. 发明授权

US07222070B1 Hybrid speech coding and system 有权
标题翻译：混合语音编码与系统
公开(公告)号：US07222070B1
公开(公告)日：2007-05-22
申请号：US09668396
申请日：2000-09-22
申请人： Jacek Stachurski , Alan V. McCree
发明人： Jacek Stachurski , Alan V. McCree
IPC分类号： G10L21/00 , G10L11/06
CPC分类号： G10L19/04 , G10L19/097 , G10L19/20
摘要： Linear predictive speech coding system with classification of frames and a hybrid coder using both waveform coding and parametric coding for different classes of frames. Phase alignment for a parametric coder aligns synthesized speech frames with adjacent waveform coder synthesized frames. Zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame interpolation of LP coefficients suppresses artifacts in resultant synthesized speech frames.
摘要翻译：具有帧分类的线性预测语音编码系统和使用波形编码和不同类别帧的参数编码的混合编码器。参数编码器的相位对准将合成语音帧与相邻波形编码器合成帧对齐。在波形编码之前的语音的零相位对准将波形编码器的合成语音帧与由参数编码器合成的帧对齐。 LP系数的帧间插值抑制了合成语音帧中的伪像。

53. 发明授权

US07136810B2 Wideband speech coding system and method 有权
公开(公告)号：US07136810B2
公开(公告)日：2006-11-14
申请号：US09920479
申请日：2001-08-01
申请人： Erdal Paksoy , Alan V. McCree
发明人： Erdal Paksoy , Alan V. McCree
IPC分类号： G10L19/04
CPC分类号： G10L21/038 , G10L19/0204 , G10L19/12 , G10L25/18
摘要： A speech encoder/decoder for wideband speech with a partitioning of wideband into lowband and highband, convenient coding of the lowband, and LP excited by noise plus some periodicity for the highband. The embedded lowband may be extracted for a lower bit rate decoder.

54. 发明授权

US07039581B1 Hybrid speed coding and system 有权
标题翻译：混合速度编码和系统
公开(公告)号：US07039581B1
公开(公告)日：2006-05-02
申请号：US09668844
申请日：2000-09-22
申请人： Jacek Stachurski , Alan V. McCree
发明人： Jacek Stachurski , Alan V. McCree
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/20
摘要： Linear predictive speech coding system with classification of frames and a hybrid coder using both waveform coding and parametric coding for different classes of frames. Phase alignment for a parametric coder aligns synthesized speech frames with adjacent waveform coder synthesized frames. Zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame interpolation of LP coefficients suppresses artifacts in resultant synthesized speech frames.
摘要翻译：具有帧分类的线性预测语音编码系统和使用波形编码和不同类别帧的参数编码的混合编码器。参数编码器的相位对准将合成语音帧与相邻波形编码器合成帧对齐。在波形编码之前的语音的零相位对准将波形编码器的合成语音帧与由参数编码器合成的帧对齐。 LP系数的帧间插值抑制了合成语音帧中的伪像。

55. 发明申请

US20060018458A1 Acoustic echo devices and methods 有权
公开(公告)号：US20060018458A1
公开(公告)日：2006-01-26
申请号：US11165897
申请日：2005-06-24
申请人： Alan V. McCree , Takahiro Unno , Thierry LeGall , Sebastien Guiriec
发明人： Alan V. McCree , Takahiro Unno , Thierry LeGall , Sebastien Guiriec
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： Hands-free phones with voice activity detection using a comparison of frame power estimate with an adaptive frame noise power estimate, automatic gain control with fast adaptation and minimal speech distortion, echo cancellation updated in the frequency domain with stepsize optimization and smoothed spectral whitening, and echo suppression with adaptive talking-state transitions.

56. 发明授权

US06804244B1 Integrated circuits for packet communications 有权
标题翻译：用于分组通信的集成电路
公开(公告)号：US06804244B1
公开(公告)日：2004-10-12
申请号：US09460755
申请日：1999-12-14
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04L1228
CPC分类号： H04L29/06027 , H04L1/0001 , H04L1/0009 , H04L1/0014 , H04L1/0017 , H04L1/0025 , H04L1/06 , H04L1/08 , H04L1/18 , H04L12/6418 , H04L45/24 , H04L47/10 , H04L47/2416 , H04L47/263 , H04L47/283 , H04L65/602 , H04L65/80
摘要： A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361′) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22). Increasing the diversity rate (d11 to d22) while either reducing or keeping unchanged the overall transmission rate (sij+dij) is an important new improvement in even solely-time-diversity embodiments. In another form of the invention a single-chip integrated circuit includes a processor circuit (1511), and a rate-and-diversity control (1561). Here again, the diversity is contemplated to be time diversity, path diversity, and combined time/path diversity in various embodiments. Other embodiments disclosed encompass other processes, improved packets and packet ensembles, integrated circuits, chipsets, computer add-in cards, information storage articles, systems, computers, gateways, routers, cellular telephone handsets, wireless base stations, appliances, and packet networks, and other forms as claimed.
摘要翻译：在发送器（311）发送实时信息分组的过程（111,101）包括以下步骤：首先在发送器处产生具有大于零千比特/秒的源速率（s11）的实时信息分组，以及时间或路径或组合时间/路径分集速率（d11），分集量（d11）最初至少为零千比特每秒。该过程发送分组，从而导致服务质量QoS，并且可选地在发送方（311）获得QoS的度量。可以在接收机（361'）处执行速率/分集适配决定。另一步骤将QoS与可接受性阈值（Th1）进行比较，并且当QoS处于所述阈值（Th1）的不可接受侧时，增加分集速率（d11至d22），并且不仅发送实时时间信息，但也以多样化速率发送分集数据包（d22）。在降低或保持整体传输速率（sij + dij）的同时，增加分集率（d11至d22）是即使单时间多样性实施例中的重要新进展。在本发明的另一种形式中，单片集成电路包括处理器电路（1511）和速率分集控制（1561）。再次，在各种实施例中，分集被认为是时间分集，路径分集和组合的时间/路径分集。所公开的其他实施例包括其他过程，改进的分组和分组集合，集成电路，芯片组，计算机附加卡，信息存储产品，系统，计算机，网关，路由器，蜂窝电话手机，无线基站，设备和分组网络，和所要求的其他形式。

57. 发明授权

US06801499B1 Diversity schemes for packet communications 有权
标题翻译：分组通信的分集方案
公开(公告)号：US06801499B1
公开(公告)日：2004-10-05
申请号：US09461546
申请日：1999-12-14
申请人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
发明人： Krishnasamy Anandakumar , Vishu R. Viswanathan , Alan V. McCree
IPC分类号： H04B7216
CPC分类号： H04L1/0014 , H04L1/06 , H04L1/08 , H04W28/22 , H04W28/24 , H04W84/00
摘要： A process (111,101) of sending packets of real-time information at a sender (311) includes steps of initially generating at the sender the packets of real-time information with a source rate (s11) greater than zero kilobits per second, and a time or path or combined time/path diversity rate (d11), the amount of diversity (d11) initially being at least zero kilobits per second. The process sends the packets, thereby resulting in a quality of service QoS, and optionally obtains at the sender (311) a measure of the QoS. Rate/diversity adaptation decision may be performed at receiver (361′) instead. Another step compares the QoS with a threshold of acceptability (Th1), and when the QoS is on an unacceptable side of said threshold (Th1) increases the diversity rate (d11 to d22) and sends not only additional ones of the packets of real-time information but also sends diversity packets at the diversity rate as increased (d22). Increasing the diversity rate (d11 to d22) while either reducing or keeping unchanged the overall transmission rate (sij+dij) is an important new improvement in even solely-time-diversity embodiments. In another form of the invention a single-chip integrated circuit includes a processor circuit (1511), and a rate-and-diversity control (1561). Here again, the diversity is contemplated to be time diversity, path diversity, and combined time/path diversity in various embodiments. Other embodiments disclosed encompass other processes, improved packets and packet ensembles, integrated circuits, chipsets, computer add-in cards, information storage articles, systems, computers, gateways, routers, cellular telephone handsets, wireless base stations, appliances, and packet networks, and other forms as claimed.
摘要翻译：在发送器（311）发送实时信息分组的过程（111,101）包括以下步骤：首先在发送器处产生具有大于零千比特/秒的源速率（s11）的实时信息分组，以及时间或路径或组合时间/路径分集速率（d11），分集量（d11）最初至少为零千比特每秒。该过程发送分组，从而导致服务质量QoS，并且可选地在发送方（311）获得QoS的度量。可以在接收机（361'）处执行速率/分集适配决定。另一步骤将QoS与可接受性阈值（Th1）进行比较，并且当QoS处于所述阈值（Th1）的不可接受侧时，增加分集速率（d11至d22），并且不仅发送实时时间信息，但也以多样化速率发送分集数据包（d22）。在降低或保持整体传输速率（sij + dij）的同时，增加分集率（d11至d22）是即使单时间多样性实施例中的重要新进展。在本发明的另一种形式中，单片集成电路包括处理器电路（1511）和速率分集控制（1561）。再次，在各种实施例中，分集被认为是时间分集，路径分集和组合的时间/路径分集。所公开的其他实施例包括其他过程，改进的分组和分组集合，集成电路，芯片组，计算机附加卡，信息存储产品，系统，计算机，网关，路由器，蜂窝电话手机，无线基站，设备和分组网络，和所要求的其他形式。

58. 发明授权

US06470309B1 Subframe-based correlation 有权
标题翻译：基于子帧的相关
公开(公告)号：US06470309B1
公开(公告)日：2002-10-22
申请号：US09293451
申请日：1999-04-16
申请人： Alan V. McCree
发明人： Alan V. McCree
IPC分类号： G10L1104
CPC分类号： G10L25/90 , G10L25/06 , G10L2025/906
摘要： A subframe-based correlation method for pitch and voicing is provided by finding the pitch track through a speech frame that minimizes pitch prediction residual energy over the frame. The method scans the range of possible time lags T and computes for each subframe within a given range of T the maximum correlation value and further finds the set of subframe lags to maximize the correlation over all of possible pitch lags.
摘要翻译：通过通过使帧上的音调预测残余能量最小化的语音帧来找到音调轨道来提供用于音调和发音的基于子帧的相关方法。该方法扫描可能的时间滞后T的范围，并计算T的给定范围内每个子帧的最大相关值，并进一步查找子帧延迟集合以使所有可能的间距滞后相关性最大化。

59. 发明授权

US06421527B1 System for dynamic adaptation of data/channel coding in wireless communications 有权
标题翻译：无线通信中数据/信道编码的动态适应系统
公开(公告)号：US06421527B1
公开(公告)日：2002-07-16
申请号：US09311008
申请日：1999-05-13
申请人： Juan-Carlos DeMartin , Alan V. McCree , Krishnasamy Anandakumar
发明人： Juan-Carlos DeMartin , Alan V. McCree , Krishnasamy Anandakumar
IPC分类号： H04Q720
CPC分类号： H04L1/0026 , H04L1/0002 , H04L1/0009 , H04L1/0015 , H04L1/0025 , H04L1/08
摘要： A system for dynamic adaptation of wireless communication between a Mobile Station (11) and a Base Station (13) wherein the transmitted frame from the Mobile Station includes a convolutionally coded portion containing a down-link measurement bit and a repetition code identifying the codec mode of the frame. The transmitted frame from the Base Station (13) includes a codec mode command signal for the Mobile Station (11) in the convolutionally encoded portion and the repetition code identify the codec mode of the down-link frame. The Base Station (13) includes means for analyzing the quality of the up-link frame and means from the received down-link measurement bit for determining the down-link quality.
摘要翻译：一种用于移动站（11）和基站（13）之间的无线通信的动态适应的系统，其中来自移动站的发射帧包括卷积编码部分，其包含下行链路测量位和标识编解码器模式的重复码的框架。来自基站（13）的发送帧包括用于卷积编码部分中的移动站（11）的编解码器模式命令信号，并且重复码标识下行链路帧的编解码器模式。基站（13）包括用于分析上行链路帧的质量的装置和用于确定下行链路质量的来自所接收的下行链路测量位的装置。

60. 发明授权

US06148282A Multimodal code-excited linear prediction (CELP) coder and method using peakiness measure 失效
标题翻译：多模式码激励线性预测（CELP）编码器和使用峰值度量的方法
公开(公告)号：US06148282A
公开(公告)日：2000-11-14
申请号：US999433
申请日：1997-12-29
申请人： Erdal Paksoy , Alan V. McCree
发明人： Erdal Paksoy , Alan V. McCree
IPC分类号： G10L11/06 , G10L19/00 , G10L19/04 , G10L19/14 , H03M7/30
CPC分类号： G10L19/18 , G10L25/93
摘要： A multimodal code-excited linear prediction (CELP) speech coder determines a pitch-lag-periodicity-independent peakiness measure from the input speech. If the measure is greater than a peakiness threshold the encoder classifies the speech in a first coding mode. In one embodiment only frames having an open-loop pitch prediction gain not greater than a threshold, a zero-crossing rate not less than a threshold, and a peakiness measure not greater than the peakiness threshold will be classified as unvoiced speech. Accordingly, the beginning or end of a voiced utterance will be properly coded as voiced speech and speech quality improved. In another embodiment, gain-match scaling matches coded speech energy to input speech energy. A target vector (the portion of input speech with any effects of previous signals removed) is approximated using the precomputed gain for excitation vectors while minimizing perceptually-weighted error. The correct gain value is perceptually more important than the shape of the excitation vector for most unvoiced signals.
摘要翻译：多模式码激励线性预测（CELP）语音编码器从输入语音确定音调滞后周期无关的峰值度量。如果测量值大于峰值阈值，则编码器以第一编码模式对语音进行分类。在一个实施例中，只有具有不大于阈值的开环音调预测增益，不小于阈值的过零率以及不高于峰值阈值的峰值度量的帧将被分类为清音语音。因此，有声话音的开始或结束将被适当地编码为有声的语音和语音质量的改善。在另一个实施例中，增益匹配缩放将编码的语音能量与输入的语音能量相匹配。使用用于激励矢量的预计算增益同时最小化感知加权误差来近似目标矢量（输入语音的除去先前信号的任何影响的部分）。正确的增益值在感知上比大多数无声信号的激励矢量的形状更重要。

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