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Suggested settings for PDM filter at 8KHz sampling

Question asked by viveros.solomon on Jul 29, 2013
Latest reply on Oct 28, 2013 by vicman.peter
What limitations are there within the PDM filter library?

I'd like to be able to record with FS at 8KHz...the original project files show 32KHz spi configuration but FS at 16KHz and the low cutoff at 8KHz; if I want to reduce sampling, how best should I scale the filter coefficients?

example:
AudioFreq = 8000
Filter.Fs = 4000
Filter.LP_HZ = 2000
Filter.HP_HZ = 10

or should it be like the following?
AudioFreq = 16000
Filter.Fs = 8000
Filter.LP_HZ = 4000
Filter.HP_HZ = 10

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