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滤波器
相关语句
  filter
    A Filter of the Cavity with Multimode
    单腔多模滤波器
短句来源
    Design of a Kalman Filter(Ⅱ)——Algorithm and Computer Simulation
    卡尔曼滤波器的设计(二)—算法及计算机模拟
短句来源
    ASYMPTOTICALLY UNBIASED TRACE FILTER WITH CONSTANT PARAMETERS
    常参数渐近无偏跟踪滤波器
短句来源
    TWO DIMENSIONAL WIENER FILTER AND SOME PROBLEMS OF APPLICATION IN CEOPHYSICAL PROSPECTINC
    二维Wiener滤波器及在物探中应用的一些问题
短句来源
    ON THE ROBUSTNESS OF THE ADAPTIVE FILTER IN FREQUENCY DOMAIN WITH PERIODIC INPUT
    具有周期输入的频率域自适应滤波器的健壮性
短句来源
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  “滤波器”译为未确定词的双语例句
    A New Proof of Continous-Time Kalman-Bucy Recursive Filtering Fomulas
    连续时间的Kalman-Bucy滤波器的一个证法
短句来源
    The Kalman-Bucy Recursive Filtering Formulas of Continuous-time Linear Systems With State-Noise
    带有状态噪声的连续时间的Kalman—Bucy滤波器(英文)
短句来源
    A NEW ADAPTIVE FILTERING ESTIMATOR AND ITS APPLICATION
    一种新的自适应滤波器及其应用
短句来源
    The Design of QMF Bank with MaximumGlat Passband by the Least Square Method
    一种最平通带QMF滤波器组最小二乘设计方法
短句来源
    Balanced Multiwavelet and Multifilter Bank
    平衡多小波和多滤波器库(英文)
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  filter
We characterize the wavelet multipliers, as well as the scaling function multipliers and low pass filter multipliers.
      
For compactly supported gm, n (FIR filter banks) we prove an exponential rate of convergence and derive explicit expressions for the involved constants.
      
This, in turn, is used for designing local orthogonal bases obtained by unitary transformations of a single prototype filter.
      
This in turn, is used for designing local orthogonal bases obtained by unitary transformations of a single prototype filter.
      
The measure for uncertainty is a product of two factors evaluating the frequency selectivity in comparison with the ideal filter and the effective length of the filter in the digital domain, respectively.
      
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Formulas are derived for the solution of the transient currents of dissipative low-pass T-type electric wave filters. Oscillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with results calculated from these formulas. From these calculations, the following conclusions are derived. When terminating resistance is gradually increased from O, the damping constants of the sine terms begin to differ from each other, ranging in decreasing magnitude from term of the lowest frequency...

Formulas are derived for the solution of the transient currents of dissipative low-pass T-type electric wave filters. Oscillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with results calculated from these formulas. From these calculations, the following conclusions are derived. When terminating resistance is gradually increased from O, the damping constants of the sine terms begin to differ from each other, ranging in decreasing magnitude from term of the lowest frequency to the last term of cut-off frequency. Hence the transient is ultimately of the cut-off frequency. At cut-off frequency, this constant is near to but greater than R/2L. For each increase of section, there is introduced an additional sine term with smaller damping constant. Therefore transients die out faster in filters of smaller number of sections. Since transient amplitudes are of the same order of magnitude before and after cut-off, filtering property only exists in the steady states.

此篇先推求收端加电阻时,低频滤波器瞬流之公式。依此公式算出之图与用阴极光示波器映出之曲线相符合。自推算之结果,可得下列结论: (一)在滤波器收端电阻渐加时,瞬流各项之挫率渐互异,其数量由低频项至隔阻频之项顺序渐减;其最小数仍比收端无电阻时之挫率(R/2L)为大。故瞬流终必变为隔阻频之电流;而较收端无电阻时易于消减。 (二)当滤波器增加一段时,瞬流之项数亦加一。所加项之挫率皆比前有者为小。故少段滤波器之瞬流易于消减。 (三)在隔阻频後瞬流之数量与在其前者相彷恒较隔阻频後之安定数量大数十倍,故滤波之特性仅能见之于安定状态。

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative T-& π-type band-pass electric wave filters of the constant X type. Oscillagrams taken hy cathode ray oscillograph for d-c. & a-c. cases are found to agree with the calculated results. From these calculations, the following conclusions are derived: (1) No matter what the impressed frequencies are, the transient is ultimately of the lower cut-off frequency. (2) The receiving-end indicial admittance consists of...

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative T-& π-type band-pass electric wave filters of the constant X type. Oscillagrams taken hy cathode ray oscillograph for d-c. & a-c. cases are found to agree with the calculated results. From these calculations, the following conclusions are derived: (1) No matter what the impressed frequencies are, the transient is ultimately of the lower cut-off frequency. (2) The receiving-end indicial admittance consists of transient terms symmetrical with respect to the mid-frequency term. (3) The transients die out faster in the filters of smaller number of sections. (4) With the same network constants, the transients die out faster in the t-type filters. (5) Filtering property only exists in the steady state. (6) The band width increases with the number of sections. This increase is greater in π-type filters, but the band width is greater in T-type filters.

此篇先推求收端加电阻时,频带滤波器瞬流之公式依此公式算出之图与用阴极光示波器映出之曲线相符合自推算之秸果可得下列结论: (一)在滤波器收端加电阻时,瞬流终必变为低隔阻频之电流,而较收端无电阻时易于消滅。 (二)收端直瞬流之各项均对称於中频项。 (三)在段数较少之滤波器中瞬流易于消滅。 (四)在π式滤波器中,瞬流消滅较在T式中为易。 (五)滤波器之特性仅能见於安定状态之下。 (六)滤波器之带宽随所用之段数而增加。

On utilizing the half-sections of a minimum inductor image-parameter band-pass filter as suggested by C. C. Koraн, the formation of a composite filter requires such processes as equivalent network transformations and impedance-level transformations.Owing to the relatively complicated form of the coefficients of network elements, calculations usually turn out to be laborious. In this paper steps are considered with the aim of simplifying the overall computations.The paper starts with a discussion of some of the...

On utilizing the half-sections of a minimum inductor image-parameter band-pass filter as suggested by C. C. Koraн, the formation of a composite filter requires such processes as equivalent network transformations and impedance-level transformations.Owing to the relatively complicated form of the coefficients of network elements, calculations usually turn out to be laborious. In this paper steps are considered with the aim of simplifying the overall computations.The paper starts with a discussion of some of the relevant equivalent circuits, and after introducing the symmetrical relationship of the theoretical cut-off frequencies x1 and X2 together with the expression of definition of the parameter n, succeeds in establishing certain typical composite sections with compact expressions of normalized element coefficients, as shown in Table 2, by mears of which it is easier to obtain a composite filter with a minimum inductor. Examples are given at the end of the paper to illustrate the steps involved.

最少电感元件带通滤波器具有电感元件数目最少的优点。在利用所提出的影象参数最少电感元件带通滤波器各种半节来构成复合滤波器时,其复合过程一般比较复杂,通常要经过等效网络变换、阻抗水平变换等步骤才能合并,由于这种类型结构的元件系数计算公式形状较繁,所以更增加了应用时的不便。本文讨论了一些相关网络的等效电路,在引进理论截频的对称关系及通带参数n的定义式后,得出了等效网络的比较简洁的表示式及其在极端值时的各种衍生结构。由此可以建立一些典型的复合节,利用这些复合节,并加上适当的阻抗水平变换后,可容易地获得所要求的复合滤波器

 
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