add post josh-dsp-6

2023-04-15 23:33:00 +08:00
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 可以定义如下基-4 DIF-FFT 简化蝶形来简化流图表示的复杂程度

 ![基-4 DIF-FFT 简化蝶形](https://josh-blog-1257563604.cos.ap-beijing.myqcloud.com/img/2023-04-15-josh-dsp-part-5/2023-04-15-josh-dsp-part-5-190-SimplifiedRadix4Butterfly.png!sign){width=800px}
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+# 参考文献
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+王世一. *数字信号处理, 修订版.* 北京理工大学出版社, 1997.