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8 years ago.
How to use arm_rfft_fast_f32
Hi,
I want to use the arm_rfft_fast_f32 function to compute the frequency of a signal. The problem is that I don't know if the input buffer must be a complex signal table or a real signal table ?
In fact, I tested to compute a rfft (length=512) with a real signal table of 512 samples (as input buffer). But, the max frequency measured is the double that the frequency I have to find.
Thanks for your help,
Ronan
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