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Setting the filter order of resample/rate function

Fri, 08/10/2018 - 02:08 pm

Hi,

From my understanding, the resample/rate=(newSampFreq) does all the necessary interpolation and low-pass filtering to implement the decimation.
In my case, it seems like the filter order is too low for me to get a cut-off sharp enough. I could do this with the resample/down flag and supplied a mask from FilterFIR, but this is less convenient as I will have to calculate the up and down for non-integer decimation factor.

Would there be an option to choose the filter order with resample/rate?

Thanks a lot.

JimProuty

Try a larger value for Resample/N=numReconstructionSamples:

/N=numReconstructionSamples
    Specifies the number of input values used to created the up-sampled values (default is 21).
   The value of numReconstructionSamples must be odd.
    ...
    Bigger is better: 15 is usually on the low side for yielding reasonably accurate results, and although 101 will nearly always give very good results, it will be slow.

August 10, 2018 at 04:59 pm - Permalink