As to the digital part, decimation filter, different characteristics under different down-sampling rates were analyzed. Two structure optimization schemes for decimation filters working in different down-sampling rates were presented respectively.
针对数字电路部分，即抽样滤波器，本文分析了其在不同降采样率下的不同特点，分别针对低降采样率和高降采样率两种应用环境对抽样滤波器的结构进行了优化。
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利用窗函数法设计FIR 滤波器， 给出其抽样响应。
Using window function design FIR filter, given in response to its sample.
文章利用抽样定理，首次由频谱的混叠导出物理上可实现的第一类部分响应形成滤波器特性。
By using Sampling Theorem, the paper first deduce the characteristics of the first class partial response shaping filter that can be realized on the physical from the spectrum overlap.
基于多抽样率数字信号处理原理，设计窄带FIR滤波器，并在DSP芯片上实现。
The narrow band FIR filter based on multi-sampling rate of digital signal processing theory is designed and realized on DSP.
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