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Altera_Forum's avatar
Altera_Forum
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15 years ago

how to design a low pass digital filter with smallest delay

Hello, All I want to design a digital filter with the cutoff frequency 20Hz. The sampling frequency of my acquiring system is very high, up to 8192 Hz. The important requirement is the de...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I'm not an expert in digital filtering but I believe a real filter with cutoff frequency F always introduces an intrinsic delay which can't be lower than 1/(6.28 F).

Maybe I'm wrong; this is only something I (confusely) remember from university times, back in another millenium...

Cris