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fir_fs

Version:
    Last Modified: March 15, 2017

    Uses frequency sampling to design a linear phase FIR filter. fir_fs windows the impulse response with a Hamming window.

    Syntax

    b = fir_fs(n, f, a)
    b = fir_fs(n, f, a, w)
    Legacy name: fir2

    Inputs

    n

    Filter order. n is a nonnegative integer. n must be even for filters with a non-zero gain at the Nyquist frequency. If n does not meet this condition, MathScript increases n by 1.

    f

    Frequencies at which you want to take samples. 1 represents the Nyquist frequency. f is a real vector of ascending values in the interval [0, 1]. length(f) must equal length(a).

    a

    Magnitudes at each of the f frequencies. a is a real vector. length(a) must equal length(f).

    w

    Symmetric window to apply to the impulse response. w is a real vector of length n + 1.

    Outputs

    b

    Filter coefficients of order n. b is a real vector.

    N = 13;
    F = [0, 0.1, 0.5, 0.7, 1];
    A = [0, 1, 1, 0, 0];
    B = fir_fs(N, F, A)

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: This product does not support FPGA devices


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