1.For this need, its algorithm and technique has already been an extremely active research field in the recent 30 years, also achieves great success in commerce. We have many coding methods in the traditional and developing respect. The traditional methods, for instance, are PCM quantization, spatial and temporal subsampling coding, entropy coding, predictive coding, transform coding, vector quantization(VQ), and subband coding.
传统的图像编码技术:脉码调制(PCM,Pulse_Code Modulation)量化法(quantization) 、空间和时间子抽样编码(spatial and temporal subsampling coding) 、熵编码(entropy coding)、预测编码(predictive coding) 、变换编码(transform coding) 、矢量量化(VQ,Vector Quantization)、子带编码(SBC,Subband Coding) 。
2.The coding standard of MPEG-4 AAC(Advanced Audio Coding) is the latest and most efficient Hi-Fi digital audio coding method among all the existing perceptive audio coding standards. It stands for the most advanced audio coding technology, providing high compression ratio, excellent rebuilt timbre, flexible sound track configuration and diverse algorithm complexities for applications in different levels.
MPEG-4 AAC(Advanced Audio Coding)编码标准是目前所有感知音频编码标准中最新和最有效的高保真数字音频编码方法,它代表了当今最先进的音频编码技术,具有压缩比高,重建音质好,声道配置灵活,不同层次的应用具有不同的算法复杂度等特点。
3.As a new generation of audio coding standard,AAC(Advanced Audio Coding) provides the fine audio compression performance. ,far from exceeds the MP3 popular to us now, and more and more be attached importance to by people.
作为新一代的音频编码标准,AAC (Advanced Audio Coding)提供了良好的音频压缩性能,远远优于现在流行的MP3 (MPEG-1 layer 3 ),越来越受到人们的重视,己经被采纳用作MPEG-4音频部分的压缩标准。
4.The paper summarized the most of video coding technologies and standards,furthermore,have a detailed presentation of Chinese standard of our own: AVS(Audio Video coding Standard).
概述了国际国内视频编码标准发展的过程,侧重介绍了中国制定的具有自主知识产权的视频标准AVS(Audio Video coding Standard)标准。
5.As a digital audio compression standard, MPEG-2/4 AAC(Advanced Audio Coding) already becomes the core algorithm of the high quality audio coder of the MPEG-4 Standard, and represents the trends of perceptual audio coding technology.
MPEG-2/4 AAC(Advanced Audio Coding,先进音频编码)数字音频压缩标准,已经成为MPEG-4标准中高质量音频编码的核心,代表目前感知音频编码技术的发展方向。
6.From information theoretical considerations, the capacity region of a broadcast channel is achieved with the dirty-paper coding (DPC) technique.
从信息论的角度来说,广播信道的容量极限可以由一种称为dirty-paper coding (DPC)技术来达到。
7.Among these sequences, 4624bp mRNA sequence (serial number: NM_004448.2) has higher alignment score with other five sequences and contains complete coding DNA sequences (CDS). So this mRNA sequence was used as the target to design siRNA against HER-2. Begin with the AUG start codon and scan the length of the gene for AA dinucleotide sequences.
首先,通过GenBank获得了6条人HER-2 mRNA序列,其中被研究较多的是长度为4624bp的HER-2 mRNA序列(序列号为NM_004448.2),与其它HER-2 mRNA序列都具有较高的同源性,且其编码区(coding DNA sequence,CDS)也最完整。
8.AAC is a kind of high-quality audio coding standard and it is none back compatible part of MPEG-2 audio standard. It is also the kernel of MPEG-4 audio standard.
AAC(Advanced Audio Coding)是一种高质量的音频编码标准，它是MPEG-2音频的非向后兼容部分，也是MPEG-4音频的核心。
9.In our previous functional genomic study, Xcc 8004 was randomly inserted with a transposon EZ::TN Tnp. A pathogenicity-deficient mutant with insertional site in the CDS (protein coding sequence) XC3814 was identified.
在以前的Xcc致病比较与功能基因组学研究工作中,通过EZ::TN Tnp转座子诱变Xcc 8004获得一个插入位点在XC3814 CDS (protein coding sequence)内的突变体。
10.H.264 separate video encoding and transmission to two layers: Video Coding Layer (VCL) and Network Abstraction Layer (NAL) in order to fit different network.
同时为了适应不同的传输网络，H. 264从设计理念上把视频编码和传输分开，形成两个层次：视频编码层(Video Coding Layer，VCL)和网络提取层(Network Abstraction Layer，NAL)；
