Adaptive transfer function estimating method and estimating device using
the same
    2.
    发明授权
    Adaptive transfer function estimating method and estimating device using the same 失效
    自适应传递函数估计方法及其估计装置

    公开(公告)号:US5602765A

    公开(公告)日:1997-02-11

    申请号:US278503

    申请日:1994-07-21

    摘要: In an adaptive estimation of an acoustic transfer function of an unknown system, a forward linear prediction coefficient vector a(k) of an input signal x(k), the sum of forward a posteriori prediction-error squares F(k), a backward linear prediction coefficient vector b(k) of the input signal x(k) and the sum of backward a posteriori prediction-error squares B(k) are computed. Letting a step size and a pre-filter deriving coefficient vector be represented by .mu. and f(k), respectively, a pre-filter coefficient vector g(k) is calculated by a recursion formula for the pre-filter coefficient vector g(h), which is composed of the following first and second equations: ##EQU1##

    摘要翻译: 在未知系统的声传递函数的自适应估计中,输入信号x(k)的前向线性预测系数向量a(k),前向后验预测误差平方F(k),向后 计算输入信号x(k)的线性预测系数向量b(k)和后向后验预测误差平方B(k)的和。 通过分别用μ和f(k)表示步长和预滤波器导出系数向量,通过预滤波器系数向量g(h)的递归公式计算预滤波器系数向量g(k) ),其由以下第一和第二等式组成:

    Echo cancelling method and apparatus using fast projection scheme
    3.
    发明授权
    Echo cancelling method and apparatus using fast projection scheme 失效
    使用快速投影方案的回波消除方法和装置

    公开(公告)号:US5539731A

    公开(公告)日:1996-07-23

    申请号:US385989

    申请日:1995-02-09

    IPC分类号: H04M9/08

    CPC分类号: H04M9/082

    摘要: In an echo cancelling method of a p-order fast projection algorithm which subtracts an estimated echo signal y(k) from a microphone output signal u(k) to obtain an error signal e(k), adaptively calculates a pre-filter coefficient .beta.(k) from the auto-correlation of a received speech signal x(k) and the error signal, generating an intermediate variable z(k) updated by a coefficient s(k) obtained by smoothing the pre-filter coefficient, convolutes the received speech signal x(k) and the intermediate variable z(k), calculates the inner product of the auto-correlation of the received speech signal and the smoothed pre-filter coefficient s(k) and adding the inner product and the convoluted output to obtain the estimated echo signal, the magnitudes of the received speech signal x(k) and the error signal e(k) are compared and when the result of comparison satisfies a predetermined condition, a reset signal is generated to set the pre-filter coefficient .beta.(k) to zero for at least a period of time p, thereby preventing the accuracy of estimated echo characteristics from lowering during double-talk or send single-talk.

    摘要翻译: 在从麦克风输出信号u(k)中减去估计回波信号+ E,cir y + EE(k)以获得误差信号e(k)的p阶快速投影算法的回波消除方法中,自适应地计算 来自接收到的语音信号x(k)的自相关的预滤波器系数β(k)和误差信号,生成由通过平滑预处理得到的系数s(k)更新的中间变量z(k) 滤波器系数,对接收到的语音信号x(k)和中间变量z(k)进行卷积,计算接收的语音信号的自相关和平滑的预滤波器系数s(k)的内积, 产品和卷积输出以获得估计的回波信号,接收到的语音信号x(k)和误差信号e(k)的大小进行比较,并且当比较结果满足预定条件时,产生复位信号 将预滤波器系数β(k)设置为零 一段时间p,从而防止估计的回波特性的精度在双向通话或发送单通话期间降低。

    Method and apparatus for multi-channel acoustic echo cancellation and recording medium with the method recorded thereon
    4.
    发明授权
    Method and apparatus for multi-channel acoustic echo cancellation and recording medium with the method recorded thereon 失效
    用于多通道声回波消除和记录介质的方法和装置,其方法记录在其上

    公开(公告)号:US06553122B1

    公开(公告)日:2003-04-22

    申请号:US09260515

    申请日:1999-03-02

    IPC分类号: H03B320

    CPC分类号: H04M9/082

    摘要: Even if received signals are highly cross-correlated, echoes can be effectively cancelled and no psychoacoustical problems arise. A received signal xi(k) (where i=1, 2, . . . , N) and an additive signal ai(k) are added together, and the added output is used to drive a speaker i and input into an echo cancellation filter 405i. The received signal xi(k) and the additive signal ai(k) are input into adaptive filters 401i and 402i, respectively. The difference between the sum of the outputs from all the filters 401i and all the filters 402i and an echo ym(k) is detected as an error em(k). The coefficients of all the filters 401i and 402i are updated to reduce the error em(k). When the error em(k) is made sufficiently small, the coefficients of the filters 402i are transferred to the filters 405i. The sum of the outputs from all the filters 405i is detected as an echo replica, and the difference between the echo replica and the echo ym(k) is output.

    摘要翻译: 即使接收到的信号是高度相互关联的,也可以有效地消除回波并且不产生心理声学问题。接收信号xi(k)(其中i = 1,2,...,N)和加法信号ai(k) 被添加在一起,并且所添加的输出用于驱动扬声器i并输入到回声消除滤波器405i中。 接收信号xi(k)和加法信号ai(k)分别输入到自适应滤波器401i和402i中。 检测来自所有滤波器401i和全部滤波器402i的输出和回波ym(k)之间的差值作为误差em(k)。 所有滤波器401i和402i的系数被更新以减少误差em(k)。 当误差em(k)足够小时,滤波器402i的系数被传送到滤波器405i。 检测来自所有滤波器405i的输出的和作为回波复制,并且输出回波复制和回波ym(k)之间的差。

    Echo cancelling method and echo canceller using the same
    5.
    发明授权
    Echo cancelling method and echo canceller using the same 失效
    回波消除方法和回波消除器使用相同

    公开(公告)号:US5408530A

    公开(公告)日:1995-04-18

    申请号:US127375

    申请日:1993-09-28

    IPC分类号: H04B3/23 H04M9/08

    CPC分类号: H04M9/082

    摘要: A received signal vector x(n), a coefficient error covariance matrix P(n) from a memory part 12 and a forgetting factor .nu. from a memory part 13 are provided to a gain calculating part 14 to obtain a gain vector k(n). The thus obtained gain vector k(n) and an error e(n) between an echo and an echo replica are multiplied in a multiplying part 16. The multiplied output and a filter coefficient h(n) from a memory part 18 are added together to update the latter. The thus updated filter coefficient is used as the filter coefficient of an estimated echo path (an FIR filter, for example). The coefficient error covariance matrix P(n), the gain vector k(n), the received signal vector x(n) and the forgetting factor .nu. are provided to an updating part 19 to update the coefficient error covariance matrix P(n), and an adjustment matrix A representing an expectation of an impulse response variation of an echo path is added to the updated coefficient error covariance matrix P(n) and the added value is used as a new coefficient error covariance matrix P(n).

    摘要翻译: 接收信号矢量x(n),来自存储器部分12的系数误差协方差矩阵P(n)和来自存储器部分13的遗忘因子nu被提供给增益计算部分14以获得增益矢量k(n) 。 如此获得的增益矢量k(n)和回波和回波复制品之间的误差e(n)在乘法部分16中相乘。将乘法输出和来自存储器部分18的滤波器系数h(n)相加在一起 更新后者。 将这样更新的滤波器系数用作估计回波路径的滤波器系数(例如FIR滤波器)。 将系数误差协方差矩阵P(n),增益矢量k(n),接收信号矢量x(n)和遗忘因子nu提供给更新部分19以更新系数误差协方差矩阵P(n) 并且将表示回波路径的脉冲响应变化的期望的调整矩阵A添加到更新的系数误差协方差矩阵P(n),并且将附加值用作新的系数误差协方差矩阵P(n)。

    Method for manufacturing wiring circuit boards with bumps and method for forming bumps
    6.
    发明授权
    Method for manufacturing wiring circuit boards with bumps and method for forming bumps 失效
    用于制造具有凸块的布线电路板的方法和用于形成凸块的方法

    公开(公告)号:US06977349B2

    公开(公告)日:2005-12-20

    申请号:US10403024

    申请日:2003-04-01

    摘要: Wiring circuit boards with bumps can be manufactured such that stable bump connections are possible and plating pre-treatments or other difficult operations are rendered unnecessary. By utilizing a technique whereby a bump-formation etching mask 7 is formed on a bump-forming surface 3a of a metal foil 3 which has a thickness that is the sum of the thickness t1 of the wiring circuit 1 and the height t2 of the bumps 2 which are to be formed on the wiring circuit 1 (t1+t2), and then the bumps 2 are formed by half-etching the metal foil 3 to a depth corresponding to the desired bump height t2 from the bump-formation etching mask 7 side, wiring circuit boards with bumps can be manufactured such that stable bump connections are possible and plating pre-treatments or other complex processes are rendered unnecessary.

    摘要翻译: 可以制造具有凸块的布线电路板,使得可以进行稳定的凸点连接,并且不需要电镀预处理或其他难以操作的电镀。 通过利用凸起形成蚀刻掩模7形成在金属箔3的凸起形成表面3a上的技术,金属箔3的厚度是布线电路1的厚度t 1和高度t 2之和 要形成在布线电路1上的凸块2(t 1 + t 2),然后通过将金属箔3半蚀刻到与所需的凸起高度t 2相对应的深度来形成凸块2 凸点形成蚀刻掩模7侧,可以制造具有凸起的布线电路板,使得可以进行稳定的凸点连接,并且不需要电镀预处理或其他复杂的工艺。

    Method for production of interposer for mounting semiconductor element
    7.
    发明授权
    Method for production of interposer for mounting semiconductor element 失效
    用于安装半导体元件的插入件的制造方法

    公开(公告)号:US06312614B1

    公开(公告)日:2001-11-06

    申请号:US09577883

    申请日:2000-05-25

    IPC分类号: H01L2100

    摘要: A semiconductor element mounting interposer is produced by (A) forming a conducting circuit that comprises motherboard connecting electrodes 2 and plated leads 3 on an insulating base film 1; (B) forming a patterning resin layer 5 over the conducting circuit 4; (C) etching patterning resin layer 5 so as to expose the motherboard connecting electrodes 2 and plated leads 3; (D) masking plated leads 3 with an electroplating resist layer 6; (E) depositing an electroplated metal layer 7 over the exposed motherboard connecting electrodes 2; (F) removing the electroplating resist layer 6; (G) removing the exposed plated leads 3 through etching; and (H) where the patterning resin layer 5 is a polyimide precursor layer, bringing about complete imidation of the polyimide precursor layer.

    摘要翻译: 通过(A)在绝缘基膜1上形成包括母板连接电极2和电镀引线3的导电电路来制造半导体元件安装插入件; (B)在导电电路4上形成图案化树脂层5; (C)蚀刻图形化树脂层5,以使母板连接电极2和电镀引线3露出; (D)用电镀抗蚀剂层6对电镀引线3进行掩模; (E)在暴露的母板连接电极2上沉积电镀金属层7; (F)去除电镀抗蚀剂层6; (G)通过蚀刻去除暴露的电镀引线3; 和(H),其中图案形成树脂层5是聚酰亚胺前体层,使聚酰亚胺前体层完全酰化。

    Block copolymer
    8.
    发明授权
    Block copolymer 失效
    嵌段共聚物

    公开(公告)号:US07407694B2

    公开(公告)日:2008-08-05

    申请号:US11203608

    申请日:2005-08-11

    IPC分类号: C08L53/00

    摘要: The present invention relates to a block copolymer (A) including a (meth)acrylic polymer block (a) and an acrylic polymer block (b). The (meth)acrylic polymer block (a) is preferably copolymerized with a monomer having a functional group having high cohesive force, such as a carboxyl group, so that the 5%-weight-loss temperature is 300° C. or more or the tensile strength is 3 MPa or more, and the hardness measured by a type A durometer according to JIS K6253 is 50 or less, and a compression set measured after 22 hours at 70° C. is 45% or less. The block copolymer (A) exhibits excellent thermal decomposition resistance and low compression set at high temperatures. The block copolymer (A) can be used as a soft material for automobile, and has low hardness, high adhesion, high oil resistance, high weather resistance, high heat resistance, high recycling property, high tensile properties, and high wax remover resistance.

    摘要翻译: 本发明涉及包含(甲基)丙烯酸聚合物嵌段(a)和丙烯酸类聚合物嵌段(b)的嵌段共聚物(A)。 (甲基)丙烯酸系聚合物嵌段(a)优选与具有高凝聚力的官能团的单体如羧基共聚,使得5%重量损失温度为300℃以上或 拉伸强度为3MPa以上,通过根据JIS K6253的A型硬度计测定的硬度为50以下,在70℃下22小时后测定的压缩永久变形量为45%以下。 嵌段共聚物(A)在高温下表现出优异的耐热分解性和低压缩永久变形。 嵌段共聚物(A)可以用作汽车的软质材料,硬度低,附着力高,耐油性高,耐候性高,耐热性高,回收性能好,拉伸性能好,脱蜡性高。

    Acrylic block copolymer and thermoplastic resin composition
    9.
    发明授权
    Acrylic block copolymer and thermoplastic resin composition 失效
    丙烯酸嵌段共聚物和热塑性树脂组合物

    公开(公告)号:US07309736B2

    公开(公告)日:2007-12-18

    申请号:US10522869

    申请日:2003-07-31

    IPC分类号: C08L53/00

    摘要: The present invention provides a novel acrylic block copolymer rich in flexibility and excellent in mechanical strength, moldability, oil resistance, heat resistance, thermal decomposition resistance, weather resistance, and compression set, and further rich in reactivity. The present invention also provides compositions, seal products, and automobile, electric, and electronic parts, all of which include the acrylic block copolymer. The acrylic block copolymer includes a methacrylic polymer block (a) and an acrylic polymer block (b), at least one of the polymer blocks containing, in its main chain, at least one acid anhydride group (c) represented by formula (1): (wherein R1s each represent hydrogen or a methyl group and may be the same or different, n represents an integer of 0 to 3, and m represents an integer of 0 or 1).

    摘要翻译: 本发明提供了一种具有柔软性,机械强度,成型性,耐油性,耐热性,耐热分解性,耐候性和压缩永久变形性优异,反应性更强的新型丙烯酸系嵌段共聚物。 本发明还提供组合物,密封产品以及汽车,电气和电子部件,所有这些部件都包括丙烯酸类嵌段共聚物。 丙烯酸嵌段共聚物包括甲基丙烯酸系聚合物嵌段(a)和丙烯酸系聚合物嵌段(b),至少一个聚合物嵌段在其主链中含有至少一个由式(1)表示的酸酐基团(c) :(其中R 1〜S各自表示氢或甲基,可以相同或不同,n表示0〜3的整数,m表示0或1的整数)。

    Block copolymer
    10.
    发明申请
    Block copolymer 失效
    嵌段共聚物

    公开(公告)号:US20050272865A1

    公开(公告)日:2005-12-08

    申请号:US11203608

    申请日:2005-08-11

    IPC分类号: C08F293/00 C08L51/04

    摘要: The present invention relates to a block copolymer (A) including a (meth)acrylic polymer block (a) and an acrylic polymer block (b). The (meth)acrylic polymer block (a) is preferably copolymerized with a monomer having a functional group having high cohesive force, such as a carboxyl group, so that the 5%-weight-loss temperature is 300° C. or more or the tensile strength is 3 MPa or more, and the hardness measured by a type A durometer according to JIS K6253 is 50 or less, and a compression set measured after 22 hours at 70° C. is 45% or less. The block copolymer (A) exhibits excellent thermal decomposition resistance and low compression set at high temperatures. The block copolymer (A) can be used as a soft material for automobile, and has low hardness, high adhesion, high oil resistance, high weather resistance, high heat resistance, high recycling property, high tensile properties, and high wax remover resistance.

    摘要翻译: 本发明涉及包含(甲基)丙烯酸聚合物嵌段(a)和丙烯酸类聚合物嵌段(b)的嵌段共聚物(A)。 (甲基)丙烯酸系聚合物嵌段(a)优选与具有高凝聚力的官能团的单体如羧基共聚,使得5%重量损失温度为300℃以上或 拉伸强度为3MPa以上,通过根据JIS K6253的A型硬度计测定的硬度为50以下,在70℃下22小时后测定的压缩永久变形量为45%以下。 嵌段共聚物(A)在高温下表现出优异的耐热分解性和低压缩永久变形。 嵌段共聚物(A)可以用作汽车的软质材料,硬度低,附着力高,耐油性高,耐候性高,耐热性高,回收性能好,拉伸性能好,脱蜡性高。