def __init__(self):
QWidget.__init__(self)
self.p = [0.5, 0.5j]
self.ft = 'IIR'
# the following defines which subwidgets are "a"ctive, "i"nvisible or "d"eactivated
self.rt_dicts = ('com', )
self.rt_dict = {
'COM': {
'man': {
'fo': ('d', 'N'),
'msg':
('a',
"<span>Enter poles <b><i>p</i></b> for allpass function,"
"zeros will be calculated.</span>")
},
},
'AP': {
'man': {}
}
}
self.info_doc = []
def __init__(self):
QWidget.__init__(self)
self.ft = 'IIR'
c = Common()
self.rt_dict = c.rt_base_iir
self.rt_dict_add = {
'COM':{'man':{'msg':('a',
"Enter the filter order <b><i>N</i></b>, the minimum stop "
"band attenuation <b><i>A<sub>SB</sub></i></b> and frequency or "
"frequencies <b><i>F<sub>C</sub></i></b> where gain first drops "
"below the max passband ripple <b><i>-A<sub>PB</sub></i></b> .")}},
'LP': {'man':{}, 'min':{}},
'HP': {'man':{}, 'min':{}},
'BS': {'man':{}, 'min':{}},
'BP': {'man':{}, 'min':{}},
}
self.info_doc = []
self.info_doc.append('ellip()\n========')
self.info_doc.append(sig.ellip.__doc__)
self.info_doc.append('ellipord()\n==========')
self.info_doc.append(ellipord.__doc__)
def __init__(self):
QWidget.__init__(self)
self.N = 5
self.ft = 'FIR'
self.rt_dicts = ('com', )
self.rt_dict = {
'COM': {
'man': {
'fo': ('a', 'N'),
'msg':
('a',
"<span>Enter desired number of delays <b><i>N</i></b>.</span>"
)
},
},
'AP': {
'man': {}
}
}
self.info_doc = []
def __init__(self):
QWidget.__init__(self)
self.ft = 'FIR'
self.fft_window = None
# dictionary for firwin window settings
self.win_dict = fb.fil[0]['win_fir']
c = Common()
self.rt_dict = c.rt_base_iir
self.rt_dict_add = {
'COM':{'min':{'msg':('a',
r"<br /><b>Note:</b> Filter order is only a rough approximation "
"and most likely far too low!")},
'man':{'msg':('a',
r"Enter desired filter order <b><i>N</i></b> and "
"<b>-6 dB</b> pass band corner "
"frequency(ies) <b><i>F<sub>C</sub></i></b> .")},
},
'LP': {'man':{}, 'min':{}},
'HP': {'man':{'msg':('a', r"<br /><b>Note:</b> Order needs to be odd!")},
'min':{}},
'BS': {'man':{'msg':('a', r"<br /><b>Note:</b> Order needs to be odd!")},
'min':{}},
'BP': {'man':{}, 'min':{}},
}
self.info = """**Windowed FIR filters**
def __init__(self):
QWidget.__init__(self)
self.delays = 12 # number of delays per stage
self.stages = 1 # number of stages
self.ft = 'FIR'
self.rt_dicts = ()
# Common data for all filter response types:
# This data is merged with the entries for individual response types
# (common data comes first):
self.rt_dict = {
'COM':{'man':{'fo': ('d', 'N'),
'msg':('a',
"Enter desired order (= delays) <b><i>M</i></b> per stage and"
" the number of <b>stages</b>. Target frequencies and amplitudes"
" are only used for comparison, not for the design itself.")
},
'min':{'fo': ('d', 'N'),
'msg':('a',
"Enter desired attenuation <b><i>A<sub>SB</sub></i></b> at "
"the corner of the stop band <b><i>F<sub>SB</sub></i></b>. "
"Choose the number of <b>stages</b>, the minimum order <b><i>M</i></b> "
"per stage will be determined. Passband specs are not regarded.")
}
},
'LP': {'man':{'tspecs': ('u', {'frq':('u','F_PB','F_SB'),
'amp':('u','A_PB','A_SB')})
},
'min':{'tspecs': ('a', {'frq':('a','F_PB','F_SB'),
'amp':('a','A_PB','A_SB')})
}
},
'HP': {'man':{'tspecs': ('u', {'frq':('u','F_SB','F_PB'),
'amp':('u','A_SB','A_PB')})
},
'min':{'tspecs': ('a', {'frq':('a','F_SB','F_PB'),
'amp':('a','A_SB','A_PB')})
},
},
'BS': {'man':{'tspecs': ('u', {'frq':('u','F_PB','F_SB','F_SB2', 'F_PB2'),
'amp':('u','A_PB','A_SB','A_PB2')}),
'msg': ('a', "\nThis is not a proper band stop, it only lets pass"
" frequency components around DC and <i>f<sub>S</sub></i>/2."
" The order needs to be odd."),
}},
'BP': {'man':{'tspecs': ('u', {'frq':('u','F_SB','F_PB','F_PB2','F_SB2',),
'amp':('u','A_SB','A_PB','A_SB2')}),
'msg': ('a', "\nThis is not a proper band pass, it only lets pass"
" frequency components around <i>f<sub>S</sub></i>/4."
" The order needs to be odd."),
}},
}
self.info_doc = []
def __init__(self):
QWidget.__init__(self)
self.N = 5
self.ft = 'FIR'
self.rt_dicts = ('com',)
self.rt_dict = {
'COM': {'man': {'fo':('a', 'N'),
'msg':('a',
"<span>Enter desired filter order <b><i>N</i></b>, corner "
"frequencies of pass and stop band(s), <b><i>F<sub>PB</sub></i></b>"
" and <b><i>F<sub>SB</sub></i></b> , and relative weight "
"values <b><i>W </i></b> (1 ... 10<sup>6</sup>) to specify how well "
"the bands are approximated.</span>")
},
},
'LP': {'man':{'wspecs': ('u','W_PB','W_SB'),
'tspecs': ('u', {'frq':('a','F_PB','F_SB'),
'amp':('u','A_PB','A_SB')})
},
},
'HP': {'man':{'wspecs': ('u','W_SB','W_PB')},
},
'BP': {
},
'BS': {'man':{'wspecs': ('u','W_PB','W_SB','W_PB2'),
'tspecs': ('u', {'frq':('a','F_PB','F_SB','F_SB2','F_PB2'),
'amp':('u','A_PB','A_SB','A_PB2')})
}
}
}
self.info_doc = []
def __init__(self):
QWidget.__init__(self)
self.ft = 'FIR'
win_names_list = [
"Boxcar", "Rectangular", "Barthann", "Bartlett", "Blackman",
"Blackmanharris", "Bohman", "Cosine", "Dolph-Chebyshev", "Flattop",
"General Gaussian", "Gauss", "Hamming", "Hann", "Kaiser",
"Nuttall", "Parzen", "Slepian", "Triangular", "Tukey"
]
self.cur_win_name = "Kaiser" # set initial window type
self.alg = "ichige"
# initialize windows dict with the list above for firwin window settings
self.win_dict = get_windows_dict(win_names_list=win_names_list,
cur_win_name=self.cur_win_name)
# get initial / last setting from dictionary, updating self.win_dict
self._load_dict()
# instantiate FFT window with windows dict
self.fft_widget = Plot_FFT_win(self,
win_dict=self.win_dict,
sym=True,
title="pyFDA FIR Window Viewer")
# hide window initially, this is modeless i.e. a non-blocking popup window
self.fft_widget.hide()
c = Common()
self.rt_dict = c.rt_base_iir
self.rt_dict_add = {
'COM': {
'min': {
'msg':
('a', "<br /><b>Note:</b> Filter order is only a rough "
"approximation and most likely far too low!")
},
'man': {
'msg':
('a', "Enter desired filter order <b><i>N</i></b> and "
"<b>-6 dB</b> pass band corner "
"frequency(ies) <b><i>F<sub>C</sub></i></b> .")
},
},
'LP': {
'man': {},
'min': {}
},
'HP': {
'man': {
'msg': ('a', r"<br /><b>Note:</b> Order needs to be odd!")
},
'min': {}
},
'BS': {
'man': {
'msg': ('a', r"<br /><b>Note:</b> Order needs to be odd!")
},
'min': {}
},
'BP': {
'man': {},
'min': {}
},
}
self.info = """**Windowed FIR filters**
def __init__(self):
QWidget.__init__(self)
self.grid_density = 16
self.ft = 'FIR'
self.rt_dicts = ('com', )
self.rt_dict = {
'COM': {
'man': {
'fo': ('a', 'N'),
'msg':
('a',
"<span>Enter desired filter order <b><i>N</i></b>, corner "
"frequencies of pass and stop band(s), <b><i>F<sub>PB</sub></i></b>"
" and <b><i>F<sub>SB</sub></i></b> , and relative weight "
"values <b><i>W </i></b> (1 ... 10<sup>6</sup>) to specify how well "
"the bands are approximated.</span>")
},
'min': {
'fo': ('d', 'N'),
'msg':
('a',
"<span>Enter the maximum pass band ripple <b><i>A<sub>PB</sub></i></b>, "
"minimum stop band attenuation <b><i>A<sub>SB</sub></i></b> "
"and the corresponding corner frequencies of pass and "
"stop band(s), <b><i>F<sub>PB</sub></i></b> and "
"<b><i>F<sub>SB</sub></i></b> .</span>")
}
},
'LP': {
'man': {
'wspecs': ('a', 'W_PB', 'W_SB'),
'tspecs': ('u', {
'frq': ('a', 'F_PB', 'F_SB'),
'amp': ('u', 'A_PB', 'A_SB')
})
},
'min': {
'wspecs': ('d', 'W_PB', 'W_SB'),
'tspecs': ('a', {
'frq': ('a', 'F_PB', 'F_SB'),
'amp': ('a', 'A_PB', 'A_SB')
})
}
},
'HP': {
'man': {
'wspecs': ('a', 'W_SB', 'W_PB'),
'tspecs': ('u', {
'frq': ('a', 'F_SB', 'F_PB'),
'amp': ('u', 'A_SB', 'A_PB')
})
},
'min': {
'wspecs': ('d', 'W_SB', 'W_PB'),
'tspecs': ('a', {
'frq': ('a', 'F_SB', 'F_PB'),
'amp': ('a', 'A_SB', 'A_PB')
})
}
},
'BP': {
'man': {
'wspecs': ('a', 'W_SB', 'W_PB', 'W_SB2'),
'tspecs': ('u', {
'frq': ('a', 'F_SB', 'F_PB', 'F_PB2', 'F_SB2'),
'amp': ('u', 'A_SB', 'A_PB', 'A_SB2')
})
},
'min': {
'wspecs': ('d', 'W_SB', 'W_PB', 'W_SB2'),
'tspecs': ('a', {
'frq': ('a', 'F_SB', 'F_PB', 'F_PB2', 'F_SB2'),
'amp': ('a', 'A_SB', 'A_PB', 'A_SB2')
})
},
},
'BS': {
'man': {
'wspecs': ('a', 'W_PB', 'W_SB', 'W_PB2'),
'tspecs': ('u', {
'frq': ('a', 'F_PB', 'F_SB', 'F_SB2', 'F_PB2'),
'amp': ('u', 'A_PB', 'A_SB', 'A_PB2')
})
},
'min': {
'wspecs': ('d', 'W_PB', 'W_SB', 'W_PB2'),
'tspecs': ('a', {
'frq': ('a', 'F_PB', 'F_SB', 'F_SB2', 'F_PB2'),
'amp': ('a', 'A_PB', 'A_SB', 'A_PB2')
})
}
},
'HIL': {
'man': {
'wspecs': ('a', 'W_SB', 'W_PB', 'W_SB2'),
'tspecs': ('u', {
'frq': ('a', 'F_SB', 'F_PB', 'F_PB2', 'F_SB2'),
'amp': ('u', 'A_SB', 'A_PB', 'A_SB2')
})
}
},
'DIFF': {
'man': {
'wspecs': ('a', 'W_PB'),
'tspecs': ('u', {
'frq': ('a', 'F_PB'),
'amp': ('i', )
}),
'msg':
('a',
"Enter the max. frequency up to where the differentiator "
"works.")
}
}
}
self.info_doc = []
self.info_doc.append('remez()\n=======')
self.info_doc.append(sig.remez.__doc__)
self.info_doc.append('remezord()\n==========')
self.info_doc.append(remezord.__doc__)