Filter Response

<series> output = filtresp(<string> Filter Type, <number> Cutoff Frequency, <number> Sampling Frequency)

<series> output = filtresp(<string> Filter Type, <number> Cutoff Frequency Low, <number> Cutoff Frequency High, <number> Sampling Frequency)

The filter response function returns, as a data series, the frequency-domain response of the specified FIR filter.  For more details on the arguments, refer to the filter function.

Example:

var myResponseLPF = filtresp(“LP”, 500, 1000); // attenuate frequencies greater than 500 Hz

myResponseLPF.plot();

This example plots the frequency response of a 500 Hz low pass filter applied to 1000 Hz data.