Reply by Mark Borgerding●August 20, 20062006-08-20
bluewhite69 wrote:
> i am using ADSP-BF533 EZ-Lite
>
> I need a 32-Bit FFT for 24-Bit ADC written in ASM.
>
> A own FFT written in C is probably not fast enough.
>
> I've found only different 16-Bit FFT's in the Libs.
>
> Thx for Help.
>
I realize you are biased towards assembly, but if you are willing to
give a C library a try, you can compile kissfft
http://sourceforge.net/projects/kissfft
for 32 bit fixed point.
Alternately, you can split the low bits and high bits of the time domain
sequence into separate passes of 16 bit ffts then recombine the
frequency results.
-- Mark Borgerding
Reply by Scott Seidman●August 18, 20062006-08-18
"bluewhite69" <bluewhite69@gmx.de> wrote in
news:7qqdnaNunabiaHjZnZ2dnUVZ_rGdnZ2d@giganews.com:
> i am using ADSP-BF533 EZ-Lite
>
> I need a 32-Bit FFT for 24-Bit ADC written in ASM.
>
> A own FFT written in C is probably not fast enough.
>
> I've found only different 16-Bit FFT's in the Libs.
>
> Thx for Help.
>
>
>
>
>
Is applying a 16-bit FFT to the 16 MSB's not a viable option?
--
Scott
Reverse name to reply
Reply by bluewhite69●August 18, 20062006-08-18
i am using ADSP-BF533 EZ-Lite
I need a 32-Bit FFT for 24-Bit ADC written in ASM.
A own FFT written in C is probably not fast enough.
I've found only different 16-Bit FFT's in the Libs.
Thx for Help.