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基于M4F平台，用CMSIS库，做512点的实数FFT和IFFT分别需要多少cycle数？
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基于M4F平台，用CMSIS库，做512点的实数FFT和IFFT分别需要多少cycle数？
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Johnjie
5 months ago
我测试FFT需要28274cycles，IFFT需要31539cycles。和我以前的测试结果相比多了1倍。基于IAR仿真环境，不知道哪儿出了问题。有没有M4F平台的参考数据？