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Altera_Forum
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15 years ago

Unwanted frequency shift in DA-converted signal

Hi, i use Matlab/Simulink and DSP Builder for my project. In Matlab, I generate a digital source signal and program it in a LUT-Block in Simulink. This Block then sends the data to my DACs...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

How did you generate the LUT? are you aware of wrap-up continuity? I mean for one cycle sinusoid your first sample should not repeat at the end of LUT as you will wrap up to start.