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This paper presents a new method to design oversampled linear phase Nearly Perfect Reconstruction DFT modulated filter banks with different analysis and synthesis prototype filters.

提出了一种具有不同分析和综合原型滤波器的线性相位过采样NPR DFT调制滤波器组的设计方法。

Design of oversampled near perfect reconstruction interleaved DFT modulated filter banks.

4过采样近似完全重构交替DFT调制滤波器组的设计。

This dissertation mainly includes the following four aspects:(1) Design of oversampled near perfect reconstruction DFT modulated filter banks. Firstly,the property of transfer function and aliasing transfer function are analyzed.

首先，分析了传递函数和混叠传递函数的性质，给出了因果FIR DFT调制滤波器组的系统延迟与线性相位分析和综合原型滤波器阶数的关系。

A new simpler method for the design of oversampled Nearly Perfect Reconstruction DFT modulated filter banks with different analysis and synthesis prototype filters is presented.

提出了一种具有不同分析和综合原型滤波器的过采样几乎完全重构DFT调制滤波器组的更为简单的设计方法。

The constraints of oversampled cosine modulated filter banks with perfect reconstruction are deduced in this paper and then we propose an iterative method for designing the prototype filter.

接下来我们推导了过采样余弦调制滤波器组的完全重构条件，提出了一种迭代算法设计完全重构的过采样余弦调制滤波器组。

A new simpler method for the design of oversampled Nearly Perfect Reeonstruetion DFT modulated filter banks with different analysis and synthesis prototype filters is presented.

提出了一种具有不同分析和综合原型滤波器的过采样几乎完全重构DFT调制滤波器组的更为简单的设计方法。

The other aspect is devoted to the design of linear phase nearly perfect reconstruction oversampled DFT modulated filter banks with different analysis and synthesis prototype filters.

其次，研究线性相位的几乎完全重构过采样DFT滤波器组的设计。

Chapter 4 provides a bi-iterative linear programming algorithm to design analysis and synthesis prototype filter of oversampled linear phase DFT modulated filter banks with near perfect reconstruction.

第五章给出了2M通道临界采样交替DFT调制滤波器组的结构、完全重构条件及多相位结构图。

The BCH coded authentication data is modulated by chaotic sequence and then embedded into the DCT domain of the image by using the owner's private key.The embedding process is controlled by Just Noticeable Difference of the DCT block.Users can extract the authentication data with the public key,while they can't get the private key to destroy or delete the watermark through the public key.

提出一种基于非对称水印的图像认证改进算法，算法中将经过BCH编码和混沌序列调制的认证信息作为水印，利用所有者私钥嵌入图像DCT域，嵌入过程根据DCT块的可视噪声阈值控制，用户可以利用公钥从水印图像中提取认证信息，但无法从公钥中获取任何私钥信息，从而无法破坏或删除水印。

The ratio between geometric and crystallographic contrast can be modulated by the signal processing method.

对标准扫描光路，电子通道显微像的放大倍数是由电子束的扫描角范围控制，而几何衬度和结晶学衬度的比例可通过讯号处理方法来调节； 2。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。