The ZSFD wafer Signal butterfly valve consists of the wafer butterfly valve and the electric control device.
ZSFD型对夹式信号蝶阀是由对夹式蝶阀及电控装置等组成。
FFT is a very important algorithm in digital signal processing, and butterfly operation modules are important construction modules in FFT processor.
FFT是数字信号处理中的一种非常重要的算法，蝶形运算模块是FFT处理其中的重要构造模块。
In accordance with the requirements of high speed digital signal processing, the algorithm of radix-4 implemented with FPGA and the integrated architecture and butterfly unit are analyzed.
给出了频域抽取二维向量基快速傅里叶变换算法，针对二维频域信号采用频域抽取方法，导出了该快速算法蝶形运算的一般形式并给出了算法实现流程图。
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