FPGA Central

hi
i need to compute a floating pt. radix 4 1024 pt fft on a floating
point DSP (TMSC6701). Does anybody has any efficient code or links to
help me with.

i tried using the DSP library fft function provided by TI but found
the output to be incorrect.

Can anybody help me with this problem??

Regards
Vivek

[email protected] (vivek) wrote:

>hi
>i need to compute a floating pt. radix 4 1024 pt fft on a floating
>point DSP (TMSC6701). Does anybody has any efficient code or links to
>help me with.
>
>i tried using the DSP library fft function provided by TI but found
>the output to be incorrect.
>
>Can anybody help me with this problem??

I do not have such code, and can only recommend getting information
about the radix 4, and understand what it is suppose to be doing, so
that you can then debug the TI code stage by stage.

Regards,

Robert

www.gldsp.com

( modify address for return email )

www.numbersusa.com
www.americanpatrol.com

[email protected] (vivek) wrote:
> i tried using the DSP library fft function provided by TI but found
> the output to be incorrect.

I'm afraid I can't help you with your actual problem, but I find it
highly unlikely that TI would provide such an important function and
not test it properly. I find it more likely that you're not expecting
the correct output for that function, ie. that the error is on your
part. Are you absolutely certain that the problem is in the TI FFT
function?

--smb

[email protected] (Stephan M. Bernsee) wrote:

>[email protected] (vivek) wrote:
>> i tried using the DSP library fft function provided by TI but found
>> the output to be incorrect.
>
>I'm afraid I can't help you with your actual problem, but I find it
>highly unlikely that TI would provide such an important function and
>not test it properly. I find it more likely that you're not expecting

I have found errors in vendor-supplied routines.

Robert

www.gldsp.com

( modify address for return email )

www.numbersusa.com
www.americanpatrol.com