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    Last Modified: March 15, 2017

    Computes the phase response vector and the frequency vector of a filter. If you do not request an output, this function plots the unwrapped phase of the filter in the current plot window. phasezd(b) is equivalent to phasezd(b, [1], 512). phasezd(b, a) is equivalent to phasezd(b, a, 512).


    phasezd(b, a)
    phasezd(b, a, w)
    phasezd(b, a, w, fs)
    phasezd(b, a, n)
    phasezd(b, a, n, 'whole')
    phasezd(b, a, n, fs)
    phasezd(b, a, n, 'whole', fs)
    h = phasezd(b, a, w)
    h = phasezd(b, a, w, fs)
    h = phasezd (b)
    h = phasezd (b, a)
    h = phasezd (b, a, n)
    h = phasezd (b, a, n, 'whole')
    h = phasezd (b, a, n, fs)
    h = phasezd (b, a, n, 'whole', fs)
    [h, f] = phasezd(b)
    [h, f] = phasezd(b, a)
    [h, f] = phasezd(b, a, n)
    [h, f] = phasezd(b, a, n, 'whole')
    [h, f] = phasezd(b, a, n, fs)
    [h, f] = phasezd(b, a, n, 'whole', fs)
    Legacy name: phasez



    Numerator coefficients of the filter. b is a vector.


    Denominator coefficients of the filter. a is a vector.

    Default: [1]


    Frequency points at which you want to evaluate the phase response. If you do not specify w, MathScript evaluates the phase response at n points equally spaced around the upper half of the unit circle. w is a vector.


    Sampling frequency in Hz. fs is a scalar.


    Number of frequency points. n is a positive integer. The default is 512.


    Directs MathScript to evaluate the phase response at n points equally spaced around the unit circle.



    Phase response vector of the filter. h is a real vector.


    Discrete frequency vector in radians/sample that corresponds to h. f is a vector.

    b = [1, 2];
    a = [-1, 1, 1, 3];
    n = 32;
    [H, F] = phasezd(b, a, n)

    Where This Node Can Run:

    Desktop OS: Windows


    This product does not support FPGA devices

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