#!/usr/bin/env python
+import sys, os
+from optparse import OptionParser
+from gnuradio import gr, blks2, eng_notation
+
try:
import scipy
from scipy import fftpack
print "Please install SciPy to run this script (http://www.scipy.org/)"
raise SystemExit, 1
-import sys, os
-from PyQt4 import Qt, QtCore, QtGui
-import PyQt4.Qwt5 as Qwt
-from optparse import OptionParser
-from gnuradio import gr, blks2, eng_notation
-from scipy import fftpack
+try:
+ from PyQt4 import Qt, QtCore, QtGui
+except ImportError:
+ print "Please install PyQt4 to run this script (http://www.riverbankcomputing.co.uk/software/pyqt/download)"
+ raise SystemExit, 1
+
+try:
+ import PyQt4.Qwt5 as Qwt
+except ImportError:
+ print "Please install PyQwt5 to run this script (http://pyqwt.sourceforge.net/)"
+ raise SystemExit, 1
+
+try:
+ from pyqt_filter import Ui_MainWindow
+except ImportError:
+ print "Could not import from pyqt_filter. Please build with \"pyuic4 pyqt_filter.ui -o pyqt_filter.py\""
+ raise SystemExit, 1
-from pyqt_filter import Ui_MainWindow
-from pyqt_filter_firlpf import Ui_firlpfForm
-from pyqt_filter_firhpf import Ui_firhpfForm
class gr_plot_filter(QtGui.QMainWindow):
def __init__(self, qapp, options):
Qt.SIGNAL("textEdited(QString)"),
self.nfft_edit_changed)
- self.gui.designButton.setShortcut("Return")
+ self.gui.designButton.setShortcut(QtCore.Qt.Key_Return)
self.taps = []
self.fftdB = []
self.nfftpts = int(10000)
self.gui.nfftEdit.setText(Qt.QString("%1").arg(self.nfftpts))
- self.gui.lpfPassBandRippleLabel.setVisible(False)
- self.gui.lpfPassBandRippleEdit.setVisible(False)
- self.gui.bpfPassBandRippleLabel.setVisible(False)
- self.gui.bpfPassBandRippleEdit.setVisible(False)
- self.gui.hpfPassBandRippleLabel.setVisible(False)
- self.gui.hpfPassBandRippleEdit.setVisible(False)
+ self.firFilters = ("Low Pass", "Band Pass", "Complex Band Pass", "Band Notch",
+ "High Pass", "Root Raised Cosine", "Gaussian")
+ self.optFilters = ("Low Pass", "Band Pass", "Complex Band Pass",
+ "Band Notch", "High Pass")
+
+ self.set_windowed()
# Initialize to LPF
self.gui.filterTypeWidget.setCurrentWidget(self.gui.firlpfPage)
# Set up pen for colors and line width
blue = QtGui.qRgb(0x00, 0x00, 0xFF)
blueBrush = Qt.QBrush(Qt.QColor(blue))
+ red = QtGui.qRgb(0xFF, 0x00, 0x00)
+ redBrush = Qt.QBrush(Qt.QColor(red))
self.freqcurve.setPen(Qt.QPen(blueBrush, 2))
self.rcurve.setPen(Qt.QPen(blueBrush, 2))
+ self.icurve.setPen(Qt.QPen(redBrush, 2))
self.phasecurve.setPen(Qt.QPen(blueBrush, 2))
self.groupcurve.setPen(Qt.QPen(blueBrush, 2))
-
+
+ # Set up validators for edit boxes
+ self.intVal = Qt.QIntValidator(None)
+ self.dblVal = Qt.QDoubleValidator(None)
+ self.gui.nfftEdit.setValidator(self.intVal)
+ self.gui.sampleRateEdit.setValidator(self.dblVal)
+ self.gui.filterGainEdit.setValidator(self.dblVal)
+ self.gui.endofLpfPassBandEdit.setValidator(self.dblVal)
+ self.gui.startofLpfStopBandEdit.setValidator(self.dblVal)
+ self.gui.lpfStopBandAttenEdit.setValidator(self.dblVal)
+ self.gui.lpfPassBandRippleEdit.setValidator(self.dblVal)
+ self.gui.startofBpfPassBandEdit.setValidator(self.dblVal)
+ self.gui.endofBpfPassBandEdit.setValidator(self.dblVal)
+ self.gui.bpfTransitionEdit.setValidator(self.dblVal)
+ self.gui.bpfStopBandAttenEdit.setValidator(self.dblVal)
+ self.gui.bpfPassBandRippleEdit.setValidator(self.dblVal)
+ self.gui.startofBnfStopBandEdit.setValidator(self.dblVal)
+ self.gui.endofBnfStopBandEdit.setValidator(self.dblVal)
+ self.gui.bnfTransitionEdit.setValidator(self.dblVal)
+ self.gui.bnfStopBandAttenEdit.setValidator(self.dblVal)
+ self.gui.bnfPassBandRippleEdit.setValidator(self.dblVal)
+ self.gui.endofHpfStopBandEdit.setValidator(self.dblVal)
+ self.gui.startofHpfPassBandEdit.setValidator(self.dblVal)
+ self.gui.hpfStopBandAttenEdit.setValidator(self.dblVal)
+ self.gui.hpfPassBandRippleEdit.setValidator(self.dblVal)
+ self.gui.rrcSymbolRateEdit.setValidator(self.dblVal)
+ self.gui.rrcAlphaEdit.setValidator(self.dblVal)
+ self.gui.rrcNumTapsEdit.setValidator(self.dblVal)
+ self.gui.gausSymbolRateEdit.setValidator(self.dblVal)
+ self.gui.gausBTEdit.setValidator(self.dblVal)
+ self.gui.gausNumTapsEdit.setValidator(self.dblVal)
+
+ self.gui.nTapsEdit.setText("0")
+
self.filterWindows = {"Hamming Window" : gr.firdes.WIN_HAMMING,
"Hann Window" : gr.firdes.WIN_HANN,
"Blackman Window" : gr.firdes.WIN_BLACKMAN,
self.gui.filterTypeWidget.setCurrentWidget(self.gui.firhpfPage)
elif(ftype == "Root Raised Cosine"):
self.gui.filterTypeWidget.setCurrentWidget(self.gui.rrcPage)
+ elif(ftype == "Gaussian"):
+ self.gui.filterTypeWidget.setCurrentWidget(self.gui.gausPage)
self.design()
self.design()
def set_equiripple(self):
+ # Stop sending the signal for this function
+ self.gui.filterTypeComboBox.blockSignals(True)
+
self.equiripple = True
self.gui.lpfPassBandRippleLabel.setVisible(True)
self.gui.lpfPassBandRippleEdit.setVisible(True)
self.gui.bpfPassBandRippleLabel.setVisible(True)
self.gui.bpfPassBandRippleEdit.setVisible(True)
+ self.gui.bnfPassBandRippleLabel.setVisible(True)
+ self.gui.bnfPassBandRippleEdit.setVisible(True)
self.gui.hpfPassBandRippleLabel.setVisible(True)
self.gui.hpfPassBandRippleEdit.setVisible(True)
+
+ # Save current type and repopulate the combo box for
+ # filters this window type can handle
+ currenttype = self.gui.filterTypeComboBox.currentText()
+ items = self.gui.filterTypeComboBox.count()
+ for i in xrange(items):
+ self.gui.filterTypeComboBox.removeItem(0)
+ self.gui.filterTypeComboBox.addItems(self.optFilters)
+
+ # If the last filter type was valid for this window type,
+ # go back to it; otherwise, reset
+ try:
+ index = self.optFilters.index(currenttype)
+ self.gui.filterTypeComboBox.setCurrentIndex(index)
+ except ValueError:
+ pass
+
+ # Tell gui its ok to start sending this signal again
+ self.gui.filterTypeComboBox.blockSignals(False)
def set_windowed(self):
+ # Stop sending the signal for this function
+ self.gui.filterTypeComboBox.blockSignals(True)
+
self.equiripple = False
self.gui.lpfPassBandRippleLabel.setVisible(False)
self.gui.lpfPassBandRippleEdit.setVisible(False)
self.gui.bpfPassBandRippleLabel.setVisible(False)
self.gui.bpfPassBandRippleEdit.setVisible(False)
+ self.gui.bnfPassBandRippleLabel.setVisible(False)
+ self.gui.bnfPassBandRippleEdit.setVisible(False)
self.gui.hpfPassBandRippleLabel.setVisible(False)
self.gui.hpfPassBandRippleEdit.setVisible(False)
-
+
+ # Save current type and repopulate the combo box for
+ # filters this window type can handle
+ currenttype = self.gui.filterTypeComboBox.currentText()
+ items = self.gui.filterTypeComboBox.count()
+ for i in xrange(items):
+ self.gui.filterTypeComboBox.removeItem(0)
+ self.gui.filterTypeComboBox.addItems(self.firFilters)
+
+ # If the last filter type was valid for this window type,
+ # go back to it; otherwise, reset
+ try:
+ index = self.optFilters.index(currenttype)
+ self.gui.filterTypeComboBox.setCurrentIndex(index)
+ except ValueError:
+ pass
+
+ # Tell gui its ok to start sending this signal again
+ self.gui.filterTypeComboBox.blockSignals(False)
+
def design(self):
ret = True
fs,r = self.gui.sampleRateEdit.text().toDouble()
if(winstr == "Equiripple"):
designer = {"Low Pass" : self.design_opt_lpf,
"Band Pass" : self.design_opt_bpf,
- "High Pass" : self.design_opt_hpf}
+ "Complex Band Pass" : self.design_opt_cbpf,
+ "Band Notch" : self.design_opt_bnf,
+ "High Pass" : self.design_opt_hpf}
taps,r = designer[ftype](fs, gain)
else:
"Complex Band Pass" : self.design_win_cbpf,
"Band Notch" : self.design_win_bnf,
"High Pass" : self.design_win_hpf,
- "Root Raised Cosine" : self.design_win_rrc}
+ "Root Raised Cosine" : self.design_win_rrc,
+ "Gaussian" : self.design_win_gaus}
wintype = self.filterWindows[winstr]
taps,r = designer[ftype](fs, gain, wintype)
self.update_phase_curves()
self.update_group_curves()
+ self.gui.nTapsEdit.setText(Qt.QString("%1").arg(self.taps.size))
+
+
# Filter design functions using a window
def design_win_lpf(self, fs, gain, wintype):
ret = True
else:
return ([],r)
+ def design_win_gaus(self, fs, gain, wintype):
+ ret = True
+ sr,r = self.gui.gausSymbolRateEdit.text().toDouble()
+ ret = r and ret
+ bt,r = self.gui.gausBTEdit.text().toDouble()
+ ret = r and ret
+ ntaps,r = self.gui.gausNumTapsEdit.text().toInt()
+ ret = r and ret
+
+ if(r):
+ spb = fs / sr
+ taps = gr.firdes.gaussian(gain, spb, bt, ntaps)
+ return (taps,r)
+ else:
+ return ([],r)
+
# Design Functions for Equiripple Filters
- def design_opt_lpf(self, fs, gain, wintype=None):
+ def design_opt_lpf(self, fs, gain):
ret = True
pb,r = self.gui.endofLpfPassBandEdit.text().toDouble()
ret = r and ret
else:
return ([], ret)
- def design_opt_bpf(self, fs, gain, wintype=None):
+ def design_opt_bpf(self, fs, gain):
ret = True
pb1,r = self.gui.startofBpfPassBandEdit.text().toDouble()
ret = r and ret
else:
return ([],r)
- def design_opt_hpf(self, fs, gain, wintype=None):
+ def design_opt_cbpf(self, fs, gain):
+ ret = True
+ pb1,r = self.gui.startofBpfPassBandEdit.text().toDouble()
+ ret = r and ret
+ pb2,r = self.gui.endofBpfPassBandEdit.text().toDouble()
+ ret = r and ret
+ tb,r = self.gui.bpfTransitionEdit.text().toDouble()
+ ret = r and ret
+ atten,r = self.gui.bpfStopBandAttenEdit.text().toDouble()
+ ret = r and ret
+ ripple,r = self.gui.bpfPassBandRippleEdit.text().toDouble()
+ ret = r and ret
+
+ if(r):
+ sb1 = pb1 - tb
+ sb2 = pb2 + tb
+ taps = blks2.optfir.complex_band_pass(gain, fs, sb1, pb1, pb2, sb2,
+ ripple, atten)
+ return (taps,r)
+ else:
+ return ([],r)
+
+ def design_opt_bnf(self, fs, gain):
+ ret = True
+ sb1,r = self.gui.startofBnfStopBandEdit.text().toDouble()
+ ret = r and ret
+ sb2,r = self.gui.endofBnfStopBandEdit.text().toDouble()
+ ret = r and ret
+ tb,r = self.gui.bnfTransitionEdit.text().toDouble()
+ ret = r and ret
+ atten,r = self.gui.bnfStopBandAttenEdit.text().toDouble()
+ ret = r and ret
+ ripple,r = self.gui.bnfPassBandRippleEdit.text().toDouble()
+ ret = r and ret
+
+ if(r):
+ pb1 = sb1 - tb
+ pb2 = sb2 + tb
+ taps = blks2.optfir.band_reject(gain, fs, pb1, sb1, sb2, pb2,
+ ripple, atten)
+ return (taps,r)
+ else:
+ return ([],r)
+
+ def design_opt_hpf(self, fs, gain):
ret = True
sb,r = self.gui.endofHpfStopBandEdit.text().toDouble()
ret = r and ret
projects / debian / gnuradio / blobdiff