8192 point FFT on 5509A

Chris L8282

Intellectual 330 points

Can anybody point me in the direction of an 8192 point, highly optimized FFT for the 5509A DSP?

If not is is possible to modify the one included with the DSPLIB ?

Chris

over 15 years ago

0 Mark M over 15 years ago

TI__Mastermind 30140 points

Hi Chris,

I think you may be able to implement an 8192 point FFT with the hand-optimized CFFT DSPLIB routine. You would need to rebuild DSPLIB with a larger twiddle table (a 4096 point complex twiddle table for the 8192 point FFT).

See this note: http://processors.wiki.ti.com/index.php/DSPLIB#Can_the_DSPLIB_implementation_of_FFT_algorithms_support_2048_point_complex_FFTs.3F

I am trying this out now. I'll let you know how it goes.

Regards,
Mark

0 Chris L8282 over 15 years ago in reply to Mark M

Intellectual 330 points

Mark

Thanks very much for the information. I am going to take a close look

at how to implement it as well. Thanks for your time and help.

Chris

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8192 point FFT on 5509A