def __init__(self, parent=None):
super().__init__(parent)
self.ui = Ui_DialogFilterBandwidth()
self.ui.setupUi(self)
bw_type = constants.SETTINGS.value("bandpass_filter_bw_type", "Medium",
str)
custom_bw = constants.SETTINGS.value("bandpass_filter_custom_bw", 0.1,
float)
for item in dir(self.ui):
item = getattr(self.ui, item)
if isinstance(item, QLabel):
name = item.objectName().replace("label", "")
key = next((key for key in Filter.BANDWIDTHS.keys()
if name.startswith(key.replace(" ", ""))), None)
if key is not None and name.endswith("Bandwidth"):
item.setText("{0:n}".format(Filter.BANDWIDTHS[key]))
elif key is not None and name.endswith("KernelLength"):
item.setText(
str(
Filter.get_filter_length_from_bandwidth(
Filter.BANDWIDTHS[key])))
elif isinstance(item, QRadioButton):
item.setChecked(
bw_type.replace(" ", "_") == item.objectName().replace(
"radioButton", ""))
self.ui.doubleSpinBoxCustomBandwidth.setValue(custom_bw)
self.ui.spinBoxCustomKernelLength.setValue(
Filter.get_filter_length_from_bandwidth(custom_bw))
self.create_connects()
def __init__(self, parent=None):
super().__init__(parent)
self.ui = Ui_DialogFilterBandwidth()
self.ui.setupUi(self)
self.setWindowFlags(Qt.Window)
bw_type = constants.SETTINGS.value("bandpass_filter_bw_type", "Medium", str)
custom_bw = constants.SETTINGS.value("bandpass_filter_custom_bw", 0.1, float)
for item in dir(self.ui):
item = getattr(self.ui, item)
if isinstance(item, QLabel):
name = item.objectName().replace("label", "")
key = next((key for key in Filter.BANDWIDTHS.keys() if name.startswith(key.replace(" ", ""))), None)
if key is not None and name.endswith("Bandwidth"):
item.setText("{0:n}".format(Filter.BANDWIDTHS[key]))
elif key is not None and name.endswith("KernelLength"):
item.setText(str(Filter.get_filter_length_from_bandwidth(Filter.BANDWIDTHS[key])))
elif isinstance(item, QRadioButton):
item.setChecked(bw_type.replace(" ", "_") == item.objectName().replace("radioButton", ""))
self.ui.doubleSpinBoxCustomBandwidth.setValue(custom_bw)
self.ui.spinBoxCustomKernelLength.setValue(Filter.get_filter_length_from_bandwidth(custom_bw))
self.create_connects()
def test_bandpass_h(self):
f_low = -0.4
f_high = -0.3
bw = 0.01
f_shift = (f_low + f_high) / 2
f_c = (f_high - f_low) / 2
N = Filter.get_filter_length_from_bandwidth(bw)
h = Filter.design_windowed_sinc_lpf(f_c, bw=bw) * np.exp(
np.complex(0, 1) * np.pi * 2 * f_shift *
np.arange(0, N, dtype=complex))
#h = Filter.design_windowed_sinc_bandpass(f_low=f_low, f_high=f_high, bw=bw)
#h = Filter.design_windowed_sinc_lpf(0.42, bw=0.08)
impulse = np.exp(1j * np.linspace(0, 1, 50))
plt.subplot("221")
plt.title("f_low={} f_high={} bw={}".format(f_low, f_high, bw))
plt.plot(np.fft.fftfreq(1024), np.fft.fft(h, 1024))
plt.subplot("222")
plt.plot(h)
plt.show()
def test_bandpass_h(self):
f_low = -0.4
f_high = -0.3
bw = 0.01
f_shift = (f_low + f_high) / 2
f_c = (f_high - f_low) / 2
N = Filter.get_filter_length_from_bandwidth(bw)
h = Filter.design_windowed_sinc_lpf(f_c, bw=bw) * np.exp(np.complex(0,1) * np.pi * 2 * f_shift * np.arange(0, N, dtype=complex))
#h = Filter.design_windowed_sinc_bandpass(f_low=f_low, f_high=f_high, bw=bw)
#h = Filter.design_windowed_sinc_lpf(0.42, bw=0.08)
impulse = np.exp(1j * np.linspace(0, 1, 50))
plt.subplot("221")
plt.title("f_low={} f_high={} bw={}".format(f_low, f_high, bw))
plt.plot(np.fft.fftfreq(1024), np.fft.fft(h, 1024))
plt.subplot("222")
plt.plot(h)
plt.show()
def test_change_custom_bw(self):
bw = 0.3
N = Filter.get_filter_length_from_bandwidth(bw)
self.dialog.ui.doubleSpinBoxCustomBandwidth.setValue(bw)
self.assertEqual(N, self.dialog.ui.spinBoxCustomKernelLength.value())
N = 401
bw = Filter.get_bandwidth_from_filter_length(N)
self.dialog.ui.spinBoxCustomKernelLength.setValue(N)
self.assertAlmostEqual(bw, self.dialog.ui.doubleSpinBoxCustomBandwidth.value(),
places=self.dialog.ui.doubleSpinBoxCustomBandwidth.decimals())
def on_spin_box_custom_bandwidth_value_changed(self, bw: float):
self.ui.spinBoxCustomKernelLength.blockSignals(True)
self.ui.spinBoxCustomKernelLength.setValue(Filter.get_filter_length_from_bandwidth(bw))
self.ui.spinBoxCustomKernelLength.blockSignals(False)
def on_spin_box_custom_bandwidth_value_changed(self, bw: float):
self.ui.spinBoxCustomKernelLength.blockSignals(True)
self.ui.spinBoxCustomKernelLength.setValue(Filter.get_filter_length_from_bandwidth(bw))
self.ui.spinBoxCustomKernelLength.blockSignals(False)
