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How do i use the function 'firceqrip' on my data?

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Sandeep Kapour
Sandeep Kapour 2020-5-22
回答： Ricardo Losada 2020-6-15
Hi guys,
I have a dataset and I want to filter these values with the function firceqrip. If I design a firceqrip like eqnum = firceqrip(N,Fp/(Fs/2),[Rp Rst],'passedge');, how is it possible to use this filter design on my dataset? If I use filter(eqnum, dataset), then I get a error.
  1 个评论
Raunak Gupta
Raunak Gupta 2020-5-28
Hi,
Can you specifically mention what kind of dataset it is or if you have written any code and some specific error message you faced so that it can help me better understand the question.

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回答（1 个）

Ricardo Losada
Ricardo Losada 2020-6-15
Hi,
firceqrip() returns a vector of numerator (FIR) coefficients.
To apply the filter to a dataset, you have two options:
  • Use filter():
filterdata = filter(eqnum,1,dataset); % Specify denominator vector to be 1 since it is an FIR filter
  • If you need to stream data, use dsp.FIRFilter():
myfir = dsp.FIRFilter(eqnum);
filterdata1 = myfir(dataset1);
filterdata2 = myfir(dataset2); % Maintains state from previous call
... % etc

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