Problem FFT code in C?

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prasadsrkrec

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Input frquency 1000

I need fft code in C language


give me suggestion?
 

Hi,

Please describe your problem. Input frequency is 1000? and what is the sampling frequency. Also which compiler or IDE you are using.
 

Hello!

As usual, you might consider being polite...
Now there are myriads of fft programs on the net. If you google fft.c, you will
find something for sure.
Now the efficiency of the code will depend on your platform. If you are using
a microcontroller with fixed point arithmetic, then the fft.c might not work as is
and you might have to add scaling after each pass.

Dora.
 

FFTW is extremely fast, free and pretty easy to use (if you read their documentation).
 

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