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Altera_Forum's avatar
Altera_Forum
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14 years ago

Strange FFT Output

I've been using SignalTap to create a CSV file of the output from my FFT engine. However, when looking at the output in Matlab, it doesn't look right at all. I know that the ADC's working prop...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

The question was: have you signaltapped the input itself and not just rely on analogue side. Your fft output is too weird to debug from graph.

Capture input and then use matlab fft to find output independent of core.

By sampling I mean ADC sampling rate(actual clock rate that samples) and are you clocking fft with same rate.