摘要
多抽样率信号处理是建立在单抽样率信号处理基础上的一类信号处理。在传输信号时,由于语音、图象、视频信号的抽样中心频率相差很大,所以需要以多种抽样频率来对信号采样来满足各种传输类型的需要。探讨了改变抽样频率的两种方式-抽取和插值的基本原理,着重探讨了整数倍抽取和内插在数字语音系统中的应用。
Multirate digital signal processing is a kind of digital signal processing based on single-rate sampling signal processing,and because of the sampling central frequency of voice,image and video are differs greatly,so when transmiting signals,we need to come with various sampling frequency by multirate sampling to the signal.The paper discussed the two ways that change sampling rate—up-sampling and down-sampling basic original,and its utilizing in voice system.
出处
《软件导刊》
2007年第11期35-37,共3页
Software Guide
关键词
多抽样率
抽取
插值
数字低通滤波器
线性结构
multirate sampling
up-sampling
down-sampling
digital filter
linear structure
