4afdc53218ffc1356c008ef2e4a3c4c5d4f1795e,scipy/signal/tests/test_filter_design.py,TestEllipord,test_bandstop,#TestEllipord#,274

Before Change

        assert_allclose(Wn, [0.2, 0.5], rtol=1e-15)

    def test_bandstop(self):
        n, Wn = ellipord([0.1, 0.6], [0.2, 0.5], 3, 90)
        assert_equal(n, 7)
        assert_array_almost_equal(Wn, [0.1, 0.6], decimal=1)

After Change

        assert_allclose(Wn, [0.2, 0.5], rtol=1e-15)

    def test_bandstop(self):
        wp = [0.1, 0.6]
        ws = [0.2, 0.5]
        rp = 3
        rs = 90
        N, Wn = ellipord(wp, ws, rp, rs, False)
        b, a = ellip(N, rp, rs, Wn, "bs", False)
        w, h = freqz(b, a)
        w /= np.pi
        assert_array_less(-rp - 0.1,
                          dB(h[np.logical_or( w <= wp[0], wp[1] <= w)]))

Instances