Signal quantizer with reduced output fluctuation
    31.
    发明授权
    Signal quantizer with reduced output fluctuation 失效
    信号量化器,输出波动减小

    公开(公告)号:US5568514A

    公开(公告)日:1996-10-22

    申请号:US474215

    申请日:1995-06-07

    摘要: A new signal quantization scheme is proposed which reduces fluctuation of the output signal by a signal quantizer (10) providing a quantized output signal and multiplying (18) said input signal X by a factor (1-w.sub.1)and finding a difference signal .DELTA..sub.in (11) between both the input signal and the previous input signal and multiplying (16) that by a weighting factor w.sub.2 from a control (13). The previous quantizer output signal Q.sub.prev is summed (17) with the weighted difference signal .DELTA..sub.in w.sub.2 and the sum is weighted by a weighting factor w.sub.1 at a multiplier (19) to yield w.sub.1 (Q.sub.prev +w.sub.2 .DELTA..sub.in). This signal is then summed at an adder (21) and applied to the quantizer (10) so that the quantizer is forced to match the fluctuation in the input signal as well as the signal itself. When applied to speech encoding algorithms such as the North American digital cellular telephone standard VSELP, the new quantizer results in more natural sounding background noise.

    摘要翻译: 提出了一种新的信号量化方案,其通过提供量化输出信号的信号量化器(10)减少输出信号的波动,并将所述输入信号X乘以因子(1-w1),并且找出差分信号DELTA (11),并且将来自控制器(13)的加权因子w2乘以(16)。 先前的量化器输出信号Qprev与加权差信号DELTA inw2相加(17),并且在乘法器(19)处将加和加权加权因子w1加权,以产生w1(Qprev + w2 DELTA in)。 然后将该信号在加法器(21)处相加并施加到量化器(10),使得量化器被迫匹配输入信号中的波动以及信号本身。 当应用于诸如北美数字蜂窝电话标准VSELP的语音编码算法时,新的量化器导致更自然的声音背景噪声。

    Signal quantizer with reduced output fluctuation
    32.
    发明授权
    Signal quantizer with reduced output fluctuation 失效
    信号量化器,输出波动减小

    公开(公告)号:US5487087A

    公开(公告)日:1996-01-23

    申请号:US245090

    申请日:1994-05-17

    摘要: A new signal quantization scheme is proposed which reduces fluctuation of the output signal by a signal quantizer (10) providing a quantized output signal and multiplying(18) said input signal X by a factor (1-w.sub.1)and finding a difference signal .DELTA..sub.n (11) between both the input signal and the previous input signal and multiplying (16) that by a weighting factor w.sub.2 from a control (13). The previous quantizer output signal Q.sub.prev is summed (17) with the weighted difference signal .DELTA..sub.in w.sub.2 and the sum is weighted by a weighting factor w.sub.1 at a multiplier (19) to yield w.sub.1 (Q.sub.prev +w.sub.2 .DELTA..sub.in). This signal is then summed at an adder (21) and applied to the quantizer (10) so that the quantizer is forced to match the fluctuation in the input signal as well as the signal itself. When applied to speech encoding algorithms such as the North American digital cellular telephone standard VSELP, the new quantizer results in more natural sounding background noise.

    摘要翻译: 提出了一种新的信号量化方案,其通过提供量化输出信号的信号量化器(10)减少输出信号的波动,并将所述输入信号X乘以因子(1-w1),并找到差分信号DELTA n (11),并且将来自控制器(13)的加权因子w2乘以(16)。 先前的量化器输出信号Qprev与加权差信号DELTA inw2相加(17),并且在乘法器(19)处将加和加权加权因子w1加权,以产生w1(Qprev + w2 DELTA in)。 然后将该信号在加法器(21)处相加并施加到量化器(10),使得量化器被迫匹配输入信号中的波动以及信号本身。 当应用于诸如北美数字蜂窝电话标准VSELP的语音编码算法时,新的量化器导致更自然的声音背景噪声。

    INTEGRATED CIRCUITS, SYSTEMS, APPARATUS, PACKETS AND PROCESSES UTILIZING PATH DIVERSITY FOR MEDIA OVER PACKET APPLICATIONS
    33.
    发明申请
    INTEGRATED CIRCUITS, SYSTEMS, APPARATUS, PACKETS AND PROCESSES UTILIZING PATH DIVERSITY FOR MEDIA OVER PACKET APPLICATIONS 有权
    集成电路,系统,设备,分组和处理使用分组应用程序中的媒体路径多样性

    公开(公告)号:US20100091800A1

    公开(公告)日:2010-04-15

    申请号:US12638578

    申请日:2009-12-15

    IPC分类号: H04L29/02

    摘要: In one form of the invention, a process of sending real-time information from a sender computer (103) to a receiver computer (105) coupled to the sender computer (103) by a packet network (100) wherein packets (111,113) sometimes become lost, includes steps of directing (441) packets (111) containing the real-time information from the sender computer (103) by at least one path (119) in the packet network (100) to the receiver computer (105), and directing packets (113) containing information dependent on the real-time information from the sender computer (103) by at least one path diversity path (117) in the packet network (100) to the same receiver computer (105). Other forms of the invention encompass other processes, improved packets and packet ensembles (111,113), integrated circuits (610), chipsets (DSP 1721, MCU), computer cards (1651), information storage articles (1511,1611), systems, computers (103,105), gateways (191,193), routers (131,133), cellular telephone handsets (181,189), wireless base stations (183,187), appliances (1721,1731,1741), and packet networks (100), and other forms as disclosed and claimed.

    摘要翻译: 在本发明的一种形式中,发送计算机(103)将实时信息发送到分组网络(100)耦合到发送方计算机(103)的接收机(105)的过程,其中分组(111,113)有时 包括将包含来自发送者计算机(103)的实时信息的分组(441)通过分组网络(100)中的至少一个路径(119)引导到接收机计算机(105)的步骤, 以及将分组网络(100)中的至少一个路径分集路径(117)包含取决于来自发送者计算机(103)的实时信息的信息的分组(113)导向到同一接收机计算机(105)。 本发明的其他形式包括其他过程,改进的分组和分组集合(111,113),集成电路(610),芯片组(DSP1721,MCU),计算机卡(1651),信息存储产品(1511,1611),系统,计算机 (103,105),网关(191,193),路由器(131,133),蜂窝电话手机(181,189),无线基站(183,187),设备(1721,1731,1741)和分组网络(100) 声称。

    Packet circuitry addressing independent and dependent information to different proxies
    34.
    发明授权
    Packet circuitry addressing independent and dependent information to different proxies 有权
    分组电路将独立和依赖的信息解码到不同的代理

    公开(公告)号:US07961758B2

    公开(公告)日:2011-06-14

    申请号:US12638578

    申请日:2009-12-15

    IPC分类号: H04J3/24

    摘要: In one form of the invention, a process of sending real-time information from a sender computer (103) to a receiver computer (105) coupled to the sender computer (103) by a packet network (100) wherein packets (111,113) sometimes become lost, includes steps of directing (441) packets (111) containing the real-time information from the sender computer (103) by at least one path (119) in the packet network (100) to the receiver computer (105), and directing packets (113) containing information dependent on the real-time information from the sender computer (103) by at least one path diversity path (117) in the packet network (100) to the same receiver computer (105). Other forms of the invention encompass other processes, improved packets and packet ensembles (111,113), integrated circuits (610), chipsets (DSP 1721, MCU), computer cards (1651), information storage articles (1511,1611), systems, computers (103,105), gateways (191,193), routers (131,133), cellular telephone handsets (181,189), wireless base stations (183,187), appliances (1721,1731,1741), and packet networks (100), and other forms as disclosed and claimed.

    摘要翻译: 在本发明的一种形式中,发送计算机(103)将实时信息发送到分组网络(100)耦合到发送方计算机(103)的接收机(105)的过程,其中分组(111,113)有时 包括将包含来自发送者计算机(103)的实时信息的分组(441)通过分组网络(100)中的至少一个路径(119)引导到接收机计算机(105)的步骤, 以及将分组网络(100)中的至少一个路径分集路径(117)包含取决于来自发送者计算机(103)的实时信息的信息的分组(113)导向到同一接收机计算机(105)。 本发明的其他形式包括其他过程,改进的分组和分组集合(111,113),集成电路(610),芯片组(DSP1721,MCU),计算机卡(1651),信息存储产品(1511,1611),系统,计算机 (103,105),网关(191,193),路由器(131,133),蜂窝电话手机(181,189),无线基站(183,187),设备(1721,1731,1741)和分组网络(100) 声称。

    Media packet networking appliance sending diversity packets to second proxy
    35.
    发明授权
    Media packet networking appliance sending diversity packets to second proxy 有权
    媒体分组网络设备向第二代理发送分集数据包

    公开(公告)号:US08396058B2

    公开(公告)日:2013-03-12

    申请号:US13101692

    申请日:2011-05-05

    IPC分类号: H04L12/66

    摘要: In one form of the invention, a process of sending real-time information from a sender computer (103) to a receiver computer (105) coupled to the sender computer (103) by a packet network (100) wherein packets (111,113) sometimes become lost, includes steps of directing (441) packets (111) containing the real-time information from the sender computer (103) by at least one path (119) in the packet network (100) to the receiver computer (105), and directing packets (113) containing information dependent on the real-time information from the sender computer (103) by at least one path diversity path (117) in the packet network (100) to the same receiver computer (105). Other forms of the invention encompass other processes, improved packets and packet ensembles (111,113), integrated circuits (610), chipsets (DSP 1721, MCU), computer cards (1651), information storage articles (1511,1611), systems, computers (103,105), gateways (191,193), routers (131,133), cellular telephone handsets (181,189), wireless base stations (183,187), appliances (1721,1731,1741), and packet networks (100), and other forms as disclosed and claimed.

    摘要翻译: 在本发明的一种形式中,发送计算机(103)将实时信息发送到分组网络(100)耦合到发送方计算机(103)的接收机(105)的过程,其中分组(111,113)有时 包括将包含来自发送者计算机(103)的实时信息的分组(441)通过分组网络(100)中的至少一个路径(119)引导到接收机计算机(105)的步骤, 以及将分组网络(100)中的至少一个路径分集路径(117)包含取决于来自发送者计算机(103)的实时信息的信息的分组(113)导向到同一接收机计算机(105)。 本发明的其他形式包括其他过程,改进的分组和分组集合(111,113),集成电路(610),芯片组(DSP1721,MCU),计算机卡(1651),信息存储产品(1511,1611),系统,计算机 (103,105),网关(191,193),路由器(131,133),蜂窝电话手机(181,189),无线基站(183,187),设备(1721,1731,1741)和分组网络(100) 声称。

    System for dynamic adaptation of data/channel coding in wireless communications
    37.
    发明授权
    System for dynamic adaptation of data/channel coding in wireless communications 有权
    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

    IPC分类号: H04Q720

    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。

    Spectral transformation of acoustic signals
    38.
    发明授权
    Spectral transformation of acoustic signals 有权
    声信号的频谱变换

    公开(公告)号:US06253172B1

    公开(公告)日:2001-06-26

    申请号:US09153980

    申请日:1998-09-16

    IPC分类号: G10L1904

    CPC分类号: G10L21/003 G10L19/06

    摘要: An improved method of providing a pitch shifted or frequency transformed signal includes frequency scaling the original signal (12) and generating a desired spectrum envelope of the frequency transformed signal, As(z) by LPC analysis of the original signal (11). Further the method includes producing an approximation of the spectrum envelope of the frequency scaled signal As(z, &bgr;) by performing LPC analysis on the original signal (11), obtaining LSFs (13), scaling (15) and transforming the scaled LSFs back to LPC (17). The spectrum envelope of the frequency scaled signal is whitened or flattened by the approximation of the spectrum of the frequency scaled signal and the desired spectrum envelope is added at filter (19) where the transfer characteristics of the filter is A s ⁡ ( z , β ) A s ⁡ ( z ) .

    摘要翻译: 提供音调偏移或频率变换信号的改进方法包括对原始信号(12)进行频率缩放,并通过原始信号(11)的LPC分析产生频率变换信号As(z)的期望频谱包络。 此外,该方法包括通过对原始信号(11)执行LPC分析来产生频率标度信号As(z,β)的频谱包络的​​近似,获得LSF(13),缩放(15)并将缩放的LSF变换回 到LPC(17)。 频率标度信号的频谱包络通过频率标度信号的频谱的近似而变白或变平,并且滤波器(19)加上期望的频谱包络,其中滤波器的传输特性为

    Echo suppression with increment/decrement, quick, and time-delay counter updating
    39.
    发明授权
    Echo suppression with increment/decrement, quick, and time-delay counter updating 有权
    回波抑制与增量/减量,快速和延时计数器更新

    公开(公告)号:US07643630B2

    公开(公告)日:2010-01-05

    申请号:US11165897

    申请日:2005-06-24

    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.

    摘要翻译: 使用帧功率估计与自适应帧噪声功率估计的比较,具有快速适应的自动增益控制和最小语音失真的具有语音活动检测的免提电话,在频域中更新的逐步优化和平滑频谱白化的回波消除,以及 回声抑制与自适应通话状态转换。

    Method and apparatus for echo cancellation, digit filter adaptation, automatic gain control and echo suppression utilizing block least mean squares
    40.
    发明授权
    Method and apparatus for echo cancellation, digit filter adaptation, automatic gain control and echo suppression utilizing block least mean squares 有权
    用于回波消除的方法和装置,数字滤波器适配,使用块最小均方的自动增益控制和回波抑制

    公开(公告)号:US07577248B2

    公开(公告)日:2009-08-18

    申请号:US11165903

    申请日:2005-06-24

    申请人: Alan V. McCree

    发明人: Alan V. McCree

    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.

    摘要翻译: 使用帧功率估计与自适应帧噪声功率估计的比较,具有快速适应的自动增益控制和最小语音失真的具有语音活动检测的免提电话,在频域中更新的逐步优化和平滑频谱白化的回波消除,以及 回声抑制与自适应通话状态转换。