查询词典 codebooks

The computational complexity has been reduced about 5 times over against the original one. Moreover, the interpolation and quantization processing of CW is more reasonable; 2. A secondary power normalization algorithm is proposed in this dissertation. This normalization algorithm ensures that the energy sum of SEW and REW is 1. So, the energy ratio of SEW and REW can be achieved only by using SEW energy. This ratio is applied in REW quantization and CW composition; 3. For more efficient quantization for Slowly Evolving Waveform magnitude, Rapidly Evolving Waveform magnitude and power parameters, firstly, by applying the Equivalent Rectangular Bandwidth theory, classifiable multi-codebooks method, analysis-by-synthesis approach and so on, a predictive AbS multi-codebooks SEW magnitude quantization scheme is proposed. In the scheme, pitch information is exploited to determine which codebook is searched; secondly, for REW magnitude quantization, this dissertation proposed a DCT-matrix multi-codebooks quantization scheme. The classification in muti-codebooks is based on pitch and quantized SEW power. The multi-codebooks structure may offer more the information in quantization and solve the problem of the bit requirement limits in quantization by consuming some extra storage space; Furthermore, for the switch quantization of CW gain, a new classified parameter is proposed.

本文的主要贡献体现为如下几方面：一、为了减少WI模型的计算复杂度，提出了基于快速傅立叶变换、三次B样条插值和周期延拓技术的特征波形(Characteristic Waveform，CW)表示和对齐的快速算法，与原方法相比，计算量下降到原方法的1/5，同时也使得CW在插值和量化时更合理；二、为了严格保证SEW与REW的能量和为1，提出了一种特征波形的二次功率归一化算法，仅需要SEW能量就可以算出二者的能量比，并可应用到后续的REW的分类量化和CW合成中；三、为了对慢渐变波形(Slowly Evolving Waveform，SEW)幅度、快渐变波形(Rapidly Evolving Waveform，REW)幅度和特征波形功率进行有效量化，本文首先采用临界频带理论、分析合成技术、感觉加权技术以及预测式矢量量化技术，提出了一种基于基音周期分类的SEW分析合成预测式多码书量化方法；其次，本文根据基音和量化后SEW的功率信息对REW幅度进行分类，提出了一种基于离散余弦变换的REW矩阵多码书量化方法。

In codebooks training with LBG algorithm, or iginal codebooks are generally designed with the splitting algorithm.

采用LBG算法训练码书时，初始码书的产生通常采用分裂算法。

In codebooks training with LBG algorithm, choice of original codebooks is a key technique, where the splitting algorithm is generally considered effective.

在采用LBG算法进行码书训练中，一个关键的技术就是初始码书的选取，一般认为分裂算法效果显著。

Because of the rigor of theory, simpleness, convenience and better design effect in LBG algorithm, LBG algorithm is adopted in clustering feature codebooks. It has guaranteed the quality of codebooks and systematic quality is got the assurance too.

由于LBG 算法其理论上的严密性、应用于上的简便性以及较好的设计效果，在特征码本聚类时采用LBG 算法，保证了码本的质量，系统的质量也得到保证。

The apparent advantage of the method is to establish statistics codebooks for various image data,and each treating need not generate codebooks with a high coding efficient achieved, while it can apply to any opportunity with wavelet transformation used in various image and signal data compression.

其最大优点是能够建立适合各种复杂图象数据的统计码本，不必每次处理都要产生码本，极大地提高了编码效率，能应用于小

In addition, several sets of multi-layered codebooks and the quantization technique with dynamic bit allocation are adopted.

该算法还采用了多套多层结构的码书和动态位分配的向量量化技术。

Four segment vector quantizers of the local cosine transform coefficients are employed, and Linde-Gray-Buzol algorithm is applied to design the codebooks.

对局部余弦变换系数采用分维矢量量化方法进行量化，码书设计采用LGB算法。

Sharable, actionable labels and codebooks of labels may be defined by a user.

标签的可分摊的，可提起诉讼的标签和codebooks可以被由一个用户确定。

Codebooks vary widely in quality and amount of

过录编码簿在性质上及所包含的资料量有

Chapter 2 covers the AVQ , which has two dynamic codebooks in encoder and decoder, for encoding speech signal.

在第二章，研究了语音信号的自适应矢量量化（或称动态码本的矢量量化）。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。