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Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).

  

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FFT - deckers_dominique - Oct 31 18:17:00 2005



Hello everybody,

I'm trying to do an FFT with the ADSP2181 code from Analog (assembler)
in the simulator (visualdsp++3.5). I importe sampling from matlab (sum
of three or more sinus) into DM and, when the FFT is finished, I dump
DM to file and I importe them into Matlab. Sometime, there's no
problem and sometimes, I don't have the good spectrum.
I've understand that my signal must have a max amplitude between 0.8
and 0.9999.
Can anybody help me with this code. Is there a bug or something else I
need to know about it?

Deck.




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