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Altera_Forum
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16 years ago

Problem with FIR COMPILER 9.1

Hi everybody, I'm working with a Cyclone 3 EP3C120 Dev. Board and I have some problems with the FIR Compiler 9.1 (also with 9.0). I got eight sets (four Lowpass and four Bandpass), everyon...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Thanks for the hint about D/A converter (signed or unsigned), I'm still compiling the projekt (takes about 2h). I updated my design including an offset so, that there is no negative signal anymore.

I connected the FIR block directly with the ROUND block an there is no error even if the witdhs don't match. I've done this to reduce the range of the signal.

And I need the 50 Bits to reach the required 70db fall (concerning one of my bandpass filters).

I let you know if the new design works better.

T-4444