在允许重建信号有一定的量化失真的条件下，压缩语音信号的码速度。通常人们把低于64 kb/s码速率的语音编码称为语音压缩编码。在INMARSAT-M型国际移动卫星系统中，采用了语音压缩技术，使用了6.4kb/s的语音编解码速率。
设计了DEM数据极低比特率压缩方法，压缩数据隐藏在伪装数据中。
A method is designed to compress the DEM data with a very low bit ratio which would be hidden in the disguised data.
首先，论文介绍了基于小波的视频编码器的基本原理，提出一种新的适用于低比特率压缩场景的视频编码器方案。
First, the theoretical foundations of wavelet based video coder as well as a new video coder for low bit rate video compression used in this research are presented.
借助这5个组合框，我们选择支持如下配置：视频的分辨率、帧率和比特率，以及视频的采样率和压缩比特率。
With out six combo boxes, we opted to allow the configuration of the video resolution, framerate and bitrate, as well as the audio sample rate and the compression bitrate.
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