本文整理汇总了Python中scipy.signal.chebwin函数的典型用法代码示例。如果您正苦于以下问题：Python chebwin函数的具体用法？Python chebwin怎么用？Python chebwin使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了chebwin函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_cheb_even_low_attenuation
def test_cheb_even_low_attenuation(self):
cheb_even_low_at_true = array([1.000000, 0.451924, 0.51027,
0.541338, 0.541338, 0.51027,
0.451924, 1.000000])
with warnings.catch_warnings():
warnings.simplefilter("ignore", UserWarning)
cheb_even = signal.chebwin(8, at=-10)
assert_array_almost_equal(cheb_even, cheb_even_low_at_true, decimal=4)示例2: test_cheb_even_low_attenuation
def test_cheb_even_low_attenuation(self):
cheb_even_low_at_true = array([1.000000, 0.451924, 0.51027,
0.541338, 0.541338, 0.51027,
0.451924, 1.000000])
with suppress_warnings() as sup:
sup.filter(UserWarning, "This window is not suitable")
cheb_even = signal.chebwin(8, at=-10)
assert_array_almost_equal(cheb_even, cheb_even_low_at_true, decimal=4)示例3: test_cheb_odd_low_attenuation
def test_cheb_odd_low_attenuation(self):
cheb_odd_low_at_true = array([1.000000, 0.519052, 0.586405,
0.610151, 0.586405, 0.519052,
1.000000])
with warnings.catch_warnings():
warnings.simplefilter("ignore", UserWarning)
cheb_odd = signal.chebwin(7, at=-10)
assert_array_almost_equal(cheb_odd, cheb_odd_low_at_true, decimal=4)示例4: test_cheb_odd_low_attenuation
def test_cheb_odd_low_attenuation(self):
cheb_odd_low_at_true = array([1.000000, 0.519052, 0.586405,
0.610151, 0.586405, 0.519052,
1.000000])
with suppress_warnings() as sup:
sup.filter(UserWarning, "This window is not suitable")
cheb_odd = signal.chebwin(7, at=10)
assert_array_almost_equal(cheb_odd, cheb_odd_low_at_true, decimal=4)示例5: test_basic
def test_basic(self):
assert_allclose(signal.chebwin(6, 100),
[0.1046401879356917, 0.5075781475823447, 1.0, 1.0,
0.5075781475823447, 0.1046401879356917])
assert_allclose(signal.chebwin(7, 100),
[0.05650405062850233, 0.316608530648474,
0.7601208123539079, 1.0, 0.7601208123539079,
0.316608530648474, 0.05650405062850233])
assert_allclose(signal.chebwin(6, 10),
[1.0, 0.6071201674458373, 0.6808391469897297,
0.6808391469897297, 0.6071201674458373, 1.0])
assert_allclose(signal.chebwin(7, 10),
[1.0, 0.5190521247588651, 0.5864059018130382,
0.6101519801307441, 0.5864059018130382,
0.5190521247588651, 1.0])
assert_allclose(signal.chebwin(6, 10, False),
[1.0, 0.5190521247588651, 0.5864059018130382,
0.6101519801307441, 0.5864059018130382,
0.5190521247588651])示例6: test_basic
def test_basic(self):
with suppress_warnings() as sup:
sup.filter(UserWarning, "This window is not suitable")
assert_allclose(signal.chebwin(6, 100),
[0.1046401879356917, 0.5075781475823447, 1.0, 1.0,
0.5075781475823447, 0.1046401879356917])
assert_allclose(signal.chebwin(7, 100),
[0.05650405062850233, 0.316608530648474,
0.7601208123539079, 1.0, 0.7601208123539079,
0.316608530648474, 0.05650405062850233])
assert_allclose(signal.chebwin(6, 10),
[1.0, 0.6071201674458373, 0.6808391469897297,
0.6808391469897297, 0.6071201674458373, 1.0])
assert_allclose(signal.chebwin(7, 10),
[1.0, 0.5190521247588651, 0.5864059018130382,
0.6101519801307441, 0.5864059018130382,
0.5190521247588651, 1.0])
assert_allclose(signal.chebwin(6, 10, False),
[1.0, 0.5190521247588651, 0.5864059018130382,
0.6101519801307441, 0.5864059018130382,
0.5190521247588651])示例7: test_cheb_odd
def test_cheb_odd(self):
cheb_odd_true = array([0.200938, 0.107729, 0.134941, 0.165348,
0.198891, 0.235450, 0.274846, 0.316836,
0.361119, 0.407338, 0.455079, 0.503883,
0.553248, 0.602637, 0.651489, 0.699227,
0.745266, 0.789028, 0.829947, 0.867485,
0.901138, 0.930448, 0.955010, 0.974482,
0.988591, 0.997138, 1.000000, 0.997138,
0.988591, 0.974482, 0.955010, 0.930448,
0.901138, 0.867485, 0.829947, 0.789028,
0.745266, 0.699227, 0.651489, 0.602637,
0.553248, 0.503883, 0.455079, 0.407338,
0.361119, 0.316836, 0.274846, 0.235450,
0.198891, 0.165348, 0.134941, 0.107729,
0.200938])
cheb_odd = signal.chebwin(53, at=-40)
assert_array_almost_equal(cheb_odd, cheb_odd_true, decimal=4)示例8: test_cheb_even
def test_cheb_even(self):
cheb_even_true = array([0.203894, 0.107279, 0.133904,
0.163608, 0.196338, 0.231986,
0.270385, 0.311313, 0.354493,
0.399594, 0.446233, 0.493983,
0.542378, 0.590916, 0.639071,
0.686302, 0.732055, 0.775783,
0.816944, 0.855021, 0.889525,
0.920006, 0.946060, 0.967339,
0.983557, 0.994494, 1.000000,
1.000000, 0.994494, 0.983557,
0.967339, 0.946060, 0.920006,
0.889525, 0.855021, 0.816944,
0.775783, 0.732055, 0.686302,
0.639071, 0.590916, 0.542378,
0.493983, 0.446233, 0.399594,
0.354493, 0.311313, 0.270385,
0.231986, 0.196338, 0.163608,
0.133904, 0.107279, 0.203894])
cheb_even = signal.chebwin(54, at=-40)
assert_array_almost_equal(cheb_even, cheb_even_true, decimal=4)示例9: test_cheb_even_low_attenuation
def test_cheb_even_low_attenuation(self):
cheb_even_low_at_true = array([1.000000, 0.451924, 0.51027,
0.541338, 0.541338, 0.51027,
0.451924, 1.000000])
cheb_even = signal.chebwin(8, at=-10)
assert_array_almost_equal(cheb_even, cheb_even_low_at_true, decimal=4)示例10: test_cheb_odd_low_attenuation
def test_cheb_odd_low_attenuation(self):
cheb_odd_low_at_true = array([1.000000, 0.519052, 0.586405,
0.610151, 0.586405, 0.519052,
1.000000])
cheb_odd = signal.chebwin(7, at=-10)
assert_array_almost_equal(cheb_odd, cheb_odd_low_at_true, decimal=4)示例11: test_cheb_even_high_attenuation
def test_cheb_even_high_attenuation(self):
cheb_even = signal.chebwin(54, at=-40)
assert_array_almost_equal(cheb_even, cheb_even_true, decimal=4)示例12: test_cheb_odd_high_attenuation
def test_cheb_odd_high_attenuation(self):
cheb_odd = signal.chebwin(53, at=-40)
assert_array_almost_equal(cheb_odd, cheb_odd_true, decimal=4)示例13: test_cheb_even_high_attenuation
def test_cheb_even_high_attenuation(self):
with warnings.catch_warnings():
warnings.simplefilter("ignore", UserWarning)
cheb_even = signal.chebwin(54, at=-40)
assert_array_almost_equal(cheb_even, cheb_even_true, decimal=4)示例14: window
# Plot the window and its frequency response:
from scipy import signal
from scipy.fftpack import fft, fftshift
import matplotlib.pyplot as plt
window = signal.chebwin(51, at=100)
plt.plot(window)
plt.title("Dolph-Chebyshev window (100 dB)")
plt.ylabel("Amplitude")
plt.xlabel("Sample")
plt.figure()
A = fft(window, 2048) / (len(window)/2.0)
freq = np.linspace(-0.5, 0.5, len(A))
response = 20 * np.log10(np.abs(fftshift(A / abs(A).max())))
plt.plot(freq, response)
plt.axis([-0.5, 0.5, -120, 0])
plt.title("Frequency response of the Dolph-Chebyshev window (100 dB)")
plt.ylabel("Normalized magnitude [dB]")
plt.xlabel("Normalized frequency [cycles per sample]")
示例15: test_cheb_even_high_attenuation
def test_cheb_even_high_attenuation(self):
with suppress_warnings() as sup:
sup.filter(UserWarning, "This window is not suitable")
cheb_even = signal.chebwin(54, at=40)
assert_array_almost_equal(cheb_even, cheb_even_true, decimal=4)