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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

so about 1 dB "in band ripple" and almost 5 dB stop band attenuation with 81 taps. you can decimate by around 128, but none of this is going to help lower the latency. but it was a nice excuse to open MATLAB