def test_explain(self):
# this test was written before __run checke everything; kept around for just another example
f = MultistageChannelFilter(input_rate=10000, output_rate=1000, cutoff_freq=500, transition_width=100)
self.assertEqual(f.explain(), textwrap.dedent("""\
2 stages from 10000 to 1000
freq xlate and decimate by 5 using 43 taps (86000) in freq_xlating_fir_filter_ccc_sptr
final filter and decimate by 2 using 49 taps (49000) in fft_filter_ccc_sptr
No final resampler stage."""))
def test_explain(self):
# this test was written before __run checke everything; kept around for just another example
f = MultistageChannelFilter(input_rate=10000, output_rate=1000, cutoff_freq=500, transition_width=100)
self.assertEqual(f.explain(), textwrap.dedent("""\
2 stages from 10000 to 1000
freq xlate and decimate by 5 using 43 taps (86000) in freq_xlating_fir_filter_ccc_sptr
final filter and decimate by 2 using 49 taps (49000) in fft_filter_ccc_sptr
No final resampler stage."""))
def test_one_filter(**kwargs):
print '------ %s -------' % (kwargs, )
f = MultistageChannelFilter(**kwargs)
size = 10000000
top = gr.top_block()
top.connect(blocks.vector_source_c([5] * size), f,
blocks.null_sink(gr.sizeof_gr_complex))
print f.explain()
t0 = time.clock()
top.start()
top.wait()
top.stop()
t1 = time.clock()
print size, 'samples processed in', t1 - t0, 'CPU-seconds'
def test_one_filter(**kwargs):
print '------ %s -------' % (kwargs,)
f = MultistageChannelFilter(**kwargs)
size = 10000000
top = gr.top_block()
top.connect(
blocks.vector_source_c([5] * size),
f,
blocks.null_sink(gr.sizeof_gr_complex))
print f.explain()
t0 = time.clock()
top.start()
top.wait()
top.stop()
t1 = time.clock()
print size, 'samples processed in', t1 - t0, 'CPU-seconds'
def test_setters(self):
# TODO: Test filter functionality; this only tests that the operations work
filt = MultistageChannelFilter(input_rate=32000000, output_rate=16000, cutoff_freq=3000, transition_width=1200)
filt.set_cutoff_freq(2900)
filt.set_transition_width(1000)
filt.set_center_freq(10000)
self.assertEqual(2900, filt.get_cutoff_freq())
self.assertEqual(1000, filt.get_transition_width())
self.assertEqual(10000, filt.get_center_freq())
self.assertEqual(filt.explain(), textwrap.dedent("""\
7 stages from 32000000 to 16000
freq xlate and decimate by 5 using 25 taps (160000000) in freq_xlating_fir_filter_ccc_sptr
decimate by 5 using 25 taps (32000000) in fft_filter_ccc_sptr
decimate by 5 using 25 taps (6400000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (1408000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (704000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (352000) in fft_filter_ccc_sptr
final filter and decimate by 2 using 77 taps (1232000) in fft_filter_ccc_sptr
No final resampler stage."""))
def test_setters(self):
# TODO: Test filter functionality; this only tests that the operations work
filt = MultistageChannelFilter(input_rate=32000000, output_rate=16000, cutoff_freq=3000, transition_width=1200)
filt.set_cutoff_freq(2900)
filt.set_transition_width(1000)
filt.set_center_freq(10000)
self.assertEqual(2900, filt.get_cutoff_freq())
self.assertEqual(1000, filt.get_transition_width())
self.assertEqual(10000, filt.get_center_freq())
self.assertEqual(filt.explain(), textwrap.dedent("""\
7 stages from 32000000 to 16000
freq xlate and decimate by 5 using 25 taps (160000000) in freq_xlating_fir_filter_ccc_sptr
decimate by 5 using 25 taps (32000000) in fft_filter_ccc_sptr
decimate by 5 using 25 taps (6400000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (1408000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (704000) in fft_filter_ccc_sptr
decimate by 2 using 11 taps (352000) in fft_filter_ccc_sptr
final filter and decimate by 2 using 77 taps (1232000) in fft_filter_ccc_sptr
No final resampler stage."""))
