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Discussion Groups | TMS320C54x | loss of quantization bits when doing FFT and IFFT

Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).

  

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loss of quantization bits when doing FFT and IFFT - ahgu - Oct 6 4:31:00 2003



cbrev(x,x,NX/2);
rfft(x,NX,1);
unpacki(x,NX);
cbrev(x,x,NX/2);
rifft(x,NX,1); When I get the result back, the data is reduced by a factor of 128. How to
do FFT/IFFT without loss of quantization bits? Anyone has routine I can use?

thanks
Andrew





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