In the paper, the sequence of inverse Fourier transformation of wavelet low-pass filters is multiplied by the filter pulse sequence, thus filtering the frequency-domain signal using wavelet filters. This method can be used to smooth the filter`s transmission band and reject high frequency components, thus reducing the error and improving the anti-aliasing capacity of low-order filters.
文章以小波低通滤波器H的逆Fourier变换所得的序列同滤波器脉冲序列相乘，相当于小波对滤波器的频域信号进行滤波，在滤波器阶数不高的情况下，能起到平滑滤波器通带频谱，抑制高频成分，达到减小误差及增强抗混叠能力的作用。
Also extend the above method of designing multi-channel filer banks with optimization and one by one based on general parameter filter into logarithm-uniform case, where the aliasing components are analyzed and the canceling measure is considered.
3在综述图像水印算法的基础上，提出了基于多通道均匀子带分解的图像水印算法，选择中频子带嵌入水印，嵌入频带选择比塔形小波分解灵活，也没有分块DCT潜在的块效应。
It is also possible to digitize the composite signal. directly using one A/D converter with a clock high enough to leave the color subcarrier components free from aliasing, and then perform digital decoding to obtain the desired RGB or YIQ component signals.
它对数字化也是可能的那合成物信号。直接地使用一 A/D 转换器与一时钟高度足够离开彩色副载波成份自由的从别名，然后运行数传解码法获得那需要 RGB 或 YIQ 成份信号。
Chapter 3 introduces the fundamental idea and the discrete algorithm of the Wigner distribution, and discusses the way to supress the aliasing problems in the Wigner distribution of the real signal that is composed of many frequency components.
第三章：Wigner谱分析技术，介绍了Wigner谱分析的原理、数字实现方法和用途，探讨了克服多频率成份实信号Wigner谱中干涉成份的途径。
The sampling rate of the bandpass signal is exactly twice that of the in - phase and quadrature components obtained at the output. The sampling frequency determination and the lowpass anti - aliasing filter design are Straightforward.
带通信号实际采样率仅为输出端所获同相分量和正交分量采样率的两倍，可以直接确定采样频率和设计低通抗混叠滤波器。