[C6747] Real FFT Help

hasan turken

Other Parts Discussed in Thread: TMS320C6747

Hi all,

I am using TMS320C6747 DSP. I need a real input FFT for floating point input and output.

DSPLib has FFT functions for cplx input and I can use them by inserting zeros for imaginary values. But filling input arrays imaginary parts with zeros is a wasted time.

Are there any library that includes real input FFT function for floating point numbers?

OR, what is the best way if you are going to take real input FFT?

over 15 years ago

0 Gagan Maur over 15 years ago

TI__Expert 8150 points

See here: http://processors.wiki.ti.com/index.php/Efficient_FFT_Computation_of_Real_Input

Gagan

0 Martin Harrer over 13 years ago in reply to Gagan Maur

Prodigy 210 points

Hi,

I'm trying the same mentioned above (but two years later).

I've read the linked how to "Efficient FFT Computation of Real Input" but my c-code doesn't work. May be there's a dsblib function or something by now?

regards...

0 André over 12 years ago in reply to Martin Harrer

Prodigy 20 points

Hy Martin Harrer,

now it's my time to ask for the real FFT.

Did you get some DSPlib or something that solved your problem?

Regards,

André

0 Rahul Prabhu over 12 years ago in reply to André

TI__Guru** 116020 points

Andre,Martin,

Did you try out the example code provided on the wiki. Could you describe in little more detail what you mean by my code is not working? The code is a self contained package you should simply be able to change the sine input to the inputs you want to provide to test it out.

Regards,

Rahul

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[C6747] Real FFT Help