Re: Large moving average

Andor wrote:
Dave wrote:

I've got a data rate of about 20 kHz and a desired LPF cutoff of about
2.5 Hz. For starters, I was unable to design an appropriate FIR to
manage this. Even if I was successful, I expect the # of
taps/computation required would have made the filter impractical.

Not necessarily. You have a tremendous data overhead. The most
efficient way (computationally and with regards to memory) to get rid
of all that data is to use a cascade of lowpass filter / downsampling /
lowpass / downsampling ... (iterate until happy).

Or multiple levels of moving average filters.

-- glen

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