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Data Processing for automotive applications

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Ektor

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Hello, sorry for my English.
My name is Hector and I have to prepare that return data of the accelerometers, mounted on a black box integral with a vehicle along a certain path.
The output is a txt file with the acceleration in x, y, z and time.
I have to characterize the size signal to the suspension of the blak box in the vehicle.
How do I do? You can make the FFT to a signal like this, Random? How do I delete the background noise to obtain the frequency spectrum clean?

Can you give me some tips?

thanks
 

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