MPEG4是一种压缩率高、对传输带宽要求低、图像质量高的图象编码技术。
MPEG4 is a video coding technology with the characters of high compression ratio, low requirement for transmission bandwidth and high quality of image.
另外，本文还利用一种编码技术来降低存储和带宽的需求，而几乎不损失精度。
In addition, we use an encoding technique to lower the storage and bandwidth requirements, while maintaining almost the same precision details.
但是在网络带宽受限情况下，这些视频编码技术仍旧难以达到令人满意的效果。
When the network bandwidth is limited, these video coding technology is still difficult to achieve satisfactory results, and prone to errors during transmission.
针对网上教学视频信息传输的需求，对视频传输所涉及的流媒体编码、网络带宽自适应等一些关键技术做了研究。
According to the demand of information transmission in online video teaching, some key techniques such as streaming coding and bite rate control for network bandwidth are studied.
信道带宽是非常有限和宝贵的资源，而低码率语音编码技术是节省带宽的重要方法之一。
Moreover, the bandwidth is a very limited and precious resource. And the low code rate speech codes is one of the important methods to be economical bandwidth.
此技术框架综合了实时的视频自适应编码技术和有效的带宽自适应传输技术。
The framework integrates real time adaptive video coding technique and effective adaptive transmission technique.
而带宽范围较宽的音频编码采用的则多是基于心理声学的感知编码技术。
However, the audio coding technology for ultra wideband mostly USES perceptual coding which is based on the psychoacoustic model.
最后，论文以ARAPA原模图ldpc码为分量码，结合多级编码调制(MLC)技术，设计了一种兼顾带宽和功率效率的编码调制系统。
Finally, a multilevel coding (MLC) scheme with ARAPA protograph LDPC codes as component codes is designed. This scheme takes both bandwidth and power efficiency into account.
针对三维网格大数据量与三维图形引擎处理能力及网络带宽限制之间的矛盾，三维网格压缩编码技术提供了一系列解决方法。
To solve the conflict between the huge data of the 3d mesh and the power of the graphics engines and the limit of the network bandwidth, 3d mesh compression technique provides a series of approaches.
针对三维网格大数据量与三维图形引擎处理能力及网络带宽限制之间的矛盾，三维网格压缩编码技术提供了一系列解决方法。
To solve the conflict between the huge data of the 3d mesh and the power of the graphics engines and the limit of the network bandwidth, 3d mesh compression technique provides a series of approaches.
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