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    • 1. 发明公开
    • A PHASE SWITCH AND A STANDING WAVE LINEAR ACCELERATOR WITH THE PHASE SWITCH
    • STEELWELLEN-LINEARBESCHLEUNIGER MIT PHASENSCHALTER
    • EP1715730A1
    • 2006-10-25
    • EP04733523.7
    • 2004-05-18
    • MIAN YANG GAO XIN QU TWIN PEAK TECHNOLOGY DEVELOP.
    • YAO, Chongguo, Room 304, Unit A
    • H05H9/04
    • H05H9/04
    • A phase switch (energy switch) comprising a three-cavity system (an end-coupled cavity + a side-passed accelerate cavity + an end-coupled cavity) and a separate single couple cavity is disclosed. The phase shift between the adjacent accelerate cavities is π when the three-cavities system is disordered (state '0'); and a microwave pass through the three-cavities system to the adjacent accelerate cavities, the phase between the adjacent accelerate cavities is change to 2π (or 0) when the single couple cavity is disordered (state '1'). When the state 0 changes to state 1, the field phase in the structure behind the system is changed to π, thereby to switch the phase. In the two states, the entire structure operates in π/2 mode, that is very stable. That is very important for the medical accelerator. The detaining components have been moved outside the cavity when the single couple cavity or the three-cavity system is in the operate state, without warring about high frequency breakdown. By changing couple between the two end-coupled cavities in the three-cavity system and the adjacent accelerate cavities and between the cavities in the system, the relative field-strength in the acceleration section besides the switching is changed while the phase reverses. It can be used for 6Mev accelerator middle-energy or high-energy accelerator.
    • 公开了一种包括三腔系统(端耦合腔+侧通加速腔+端耦合腔)和单独耦合腔的相位开关(能量开关)。 当三腔系统无序(状态'0')时,相邻加速腔之间的相移为 - 。 并且微波通过三腔系统到相邻的加速腔,当单耦合空腔无序(状态'1')时,相邻加速腔之间的相位变为2(或0)。 当状态0变为状态1时,系统后面的结构中的场相位变为À,从而切换相位。 在这两个状态下,整个结构以À/ 2模式运行,非常稳定。 这对于医疗加速器非常重要。 当单耦合空腔或三腔系统处于工作状态时,锁定部件已经移动到腔体外部,而不会导致高频击穿。 通过在三腔系统中的两个端部耦合空腔和相邻加速腔之间以及系统中的空腔之间改变耦合,除了开关之外的加速部分中的相对场强在相位反转时改变。 可用于6Mev加速器中能或高能加速器。
    • 3. 发明申请
    • A LINEAR PREDICTION SPEECH CODING DEVICE
    • 线性预测语音编码装置
    • WO1993006592A1
    • 1993-04-01
    • PCT/BE1991000066
    • 1991-09-20
    • LERNOUT & HAUSPIE SPEECHPRODUCTSYANG, Gao
    • LERNOUT & HAUSPIE SPEECHPRODUCTS
    • G10L09/14
    • G10L19/12
    • A linear Prediction coding device having an input for receiving first words obtained by sampling an inputted speech signal and a first unit provided for determining second words representing an estimation of said inputted first words, a second unit having a first, respectively a second input for receiving said first respectively said second word and provided for determining a coding error word from said inputted first and second word, a weighting filter which is closed looped with said first unit and which has a transfer function A(z)/H(z/ gamma ) wherein A(z) = (I) and H(z/ gamma ) = 1 + mu (z/ gamma ) , mu being the first Parcor coefficient, ai a prediction coefficient obtained from an LPC analysis and an empirical value 0
    • 一种线性预测编码装置,具有用于接收通过对输入的语音信号进行采样而获得的第一个字的输入和用于确定表示所述输入的第一个字的估计的第二个字的第一单元,第二单元,分别具有第一个输入,用于接收第二个输入 所述第一分别表示所述第二字,用于从所述输入的第一和第二字确定编码错误字;加权滤波器,其与所述第一单元闭合并具有传递函数A(z)/ H(z /γ) 其中A(z)=(I)和H(z /γ)= 1 + mu(z /γ)<1>,μ是第一Parcor系数,ai是从LPC分析获得的预测系数和经验值 0 <γ
    • 5. 发明申请
    • A SPEECH CODING DEVICE
    • 语音编码设备
    • WO1993006590A1
    • 1993-04-01
    • PCT/BE1991000067
    • 1991-09-20
    • LERNOUT & HAUSPIE SPEECHPRODUCTSYANG, Gao
    • LERNOUT & HAUSPIE SPEECHPRODUCTS
    • G10L03/00
    • G10L19/08G10L19/12G10L2019/0011G10L2019/0014
    • A speech coding device having a first input for receiving a first error word determined upon an ideal and an estimated excitation word itself determined from a speech signal, said first input being connected to a second input of a first unit, a third input of which being connected to a code word generator, an output of said first unit being connected to a filter unit which is close looped with said code word generator, said said code word generator being provided for generating a first series of first code words having a substantially periodic character with a period associated with an input pitch period, said code word generator being also provided for generating a second series of second code words having a substantially non-periodic character, said coding device comprises processing means provided for determining upon words output by said filter unit an energy value and for selecting among said code words the one having produced the lowest energy value.
    • 一种语音编码装置,具有第一输入端,用于接收根据理想信号确定的第一误差字和从语音信号确定的估计的激励词本身,所述第一输入端连接到第一单元的第二输入端,其第三输入端为 连接到码字发生器,所述第一单元的输出连接到与所述码字发生器闭合的滤波器单元,所述码字发生器被提供用于产生具有基本周期性字符的第一系列第一码字 与输入音调周期相关联的周期,所述码字发生器还被提供用于产生具有基本上非周期性字符的第二系列第二码字,所述编码装置包括处理装置,用于确定由所述滤波器单元输出的字 能量值,并且用于在所述代码字中选择产生最低能量值的代码字。
    • 9. 发明授权
    • Stepsize determination of adaptive filter for cancelling voice portion by combining open-loop and closed-loop approaches
    • 通过组合开环和闭环方法,来逐步确定自适应滤波器来消除语音部分
    • US09589572B2
    • 2017-03-07
    • US14702687
    • 2015-05-02
    • Yang Gao
    • Yang Gao
    • A61F11/06G10L21/0208G10L21/0216
    • G10L21/0208G10L2021/02166
    • In accordance with an embodiment of the present invention, a noise reduction method for speech processing includes estimating a noise/interference component signal by subtracting voice component signal from a first microphone input signal wherein the voice component signal is evaluated as a first replica signal produced by passing a second microphone input signal through a first adaptive filter; a stepsize is estimated to control adaptive update of the first adaptive filter, wherein the stepsize is evaluated by combing an open-loop approach and a closed-loop approach, the open-loop approach comprising voice/noise/interference classification and SNR estimation in voice area, and the closed-loop approach comprising calculating a normalized correlation between the first replica signal and the first microphone input signal. A noise/interference reduced signal is outputted by subtracting a second replica signal from a target signal which is the first microphone input signal or the second microphone input signal, wherein the second replica signal is produced by passing the estimated noise/interference component signal through a second adaptive filter.
    • 根据本发明的实施例,用于语音处理的噪声降低方法包括:通过从第一麦克风输入信号中减去语音分量信号来估计噪声/干扰分量信号,其中语音分量信号被评估为第一复制信号,其由 通过第一自适应滤波器传递第二麦克风输入信号; 估计步长来控制第一自适应滤波器的自适应更新,其中通过组合开环方法和闭环方法评估步长,包括语音/噪声/干扰分类和声音中的SNR估计的开环方法 区域和闭环方法,包括计算第一复制信号和第一麦克风输入信号之间的归一化相关性。 通过从作为第一麦克风输入信号或第二麦克风输入信号的目标信号减去第二复制信号来输出噪声/干扰降低信号,其中通过将估计的噪声/干扰分量信号通过一个 第二自适应滤波器。