sampling rate change 抽样率转换
Multistage realization is one of the most efficient methods to change the sampling rate of signal.
多级实现是改变信号采样速率最有效的方法之一。
The recursive Fourier algorithm is used in frequency measuring to dynamically track the frequency change and real-timely adjust the sampling rate for fixed sampling points.
采用递推傅氏算法测频，动态跟踪频率变化，实时调整采样率进行定点采样；
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