Cs - acelp speech coder use a special codebook structure to simplify the search procedure of codebook , has the advantage of low bit - rate , low complexity , and high speech quality 它采用了特殊的码本结构,简化了码本的搜索过程,具有低延迟,低计算复杂度和高语音质量的优点。
In the vq based system , the codebook affects the performance of the whole system . the codebook formation is also a part of the initialization process of the gmm based system 在基于vq的识别系统中,码本的优劣影响vq算法的识别性能,在gmm识别系统中参数的初始化也涉及码本的设计。
The traditional codeword search algorithm ? full algorithm ( fs ) has a serious disadvantage , whose computation quantity will rise sharply with the increase of the codebook size and the codeword dimension 传统的码字搜索算法? ?穷尽搜索算法会随着码书规模的增大和码字维数增加,计算量急剧增加。
Encoder makes up of pre - processing , linear prediction and quantization , perceptual weighting , adaptive codebook search and fixed codebook search , quantization of gains and parameter coder 编码器主要包括预处理、线性预测( lp )分析和量化、感觉加权、自适应码本和固定码本的搜索、增益量化和参数编码。
Adopting normal shape codebook had another good use , which afforded the possibility of directly constructing a new shape codebook without codebook training which needed mass of calculation amount 采用归一化波形码书获得的附加好处是提供了一种可能,即避开大运算量的码书训练过程,直接构造新的波形码书。
Using tcvq and ideas of small codebook expansion and block coding , chapter 6 proposes a new quantization precept making quantization on two dimension codebook space , that is 2djtcvq 第六章在tcvq基础上运用小码书扩展和块编码的思想方法提出在二维码电子科技大学搏士论文书空间进行量化的方案,即二维tcvq 。
It adopts the structure of algebraic codebook and focused search of algebraic codebook to increase agility and randomicity , which decreases the complexity of this algorithm greatly 它是一种改进的码本激励线性预测算法,采用的是代数码本结构及聚焦搜索技术,提高了码本的灵活性和随机性,极大地降低了算法的复杂度。
By the similarity partition of network traffic usage space , the codebook of vq can describe the network traffic usage profile accurately and achieved the usage space index via the vq 通过相似性划分用户行为空间,矢量量化的码书( codebook )能够精确的描述用户行为模式轮廓,实现了面向异常度量的网络业务量用户行为空间索引。
In this research , the complexity of g . 728 could be greatly reduced and the average segmented snr could be increased about 2db by using normal shape codebook and the exact denotation of exciting gain 研究表明,采用归一化波形码书并对激励增益精确表示,不仅大幅度减少了g . 728计算复杂性,同时可以获得约2db的信噪比提升。
We tentatively constructed a normal shape codebook in which every codevector included ten samples . an 8kbit / s low delay celp algorithm was proposed , and based on it , an 8kbit / s algorithm with pitch predictor was proposed too 本研究尝试性地构造了每矢量10样点的归一化波形码书,设计了8kbit s低延迟码激励话音编码方案。