[B,A] = tf(npFilter)
returns the vector of numerator coefficients, B, and the vector of
denominators, A, for the equivalent transfer function corresponding to
the notch filter.
[B,A,B2,A2] = tf(npFilter)
also returns the vector of numerator coefficients, B2, and the vector
of denominator coefficients, A2, for the equivalent transfer function
corresponding to the peak filter.
Bnotch and Anotch are the vectors of numerator and denominator coefficients for the equivalent transfer function corresponding to the notch filter. Bpeak and Apeak are the vectors of numerator and denominator coefficients for the equivalent transfer function corresponding to the peak filter.
In the dsp.NotchPeakFilter object, you can now specify
the 3-dB bandwidth and center frequency values in normalized frequency units (0 to 1). To
enable this functionality, set the NormalizedFrequency property of the object to true.
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