ref: 74a4865ea20987d9adf612ca88f4c832905fffb8
dir: /tests/python/src/spectral/phasevoc.py/
from template import aubio_unit_template
from localaubio import *
buf_size = 1024
hop_size = 256
channels = 2
precision = 6
class phasevoc_unit(unittest.TestCase):
def setUp(self):
self.o = new_aubio_pvoc(buf_size, hop_size, channels)
def tearDown(self):
del_aubio_pvoc(self.o)
def test_create(self):
""" create and delete phasevoc object """
pass
def test_zeroes(self):
""" run phasevoc object on zeroes """
input = new_fvec(hop_size, channels)
fftgrain = new_cvec(buf_size, channels)
output = new_fvec(hop_size, channels)
for index in range(hop_size):
for channel in range(channels):
self.assertEqual(0., fvec_read_sample(input, channel, index))
aubio_pvoc_do (self.o, input, fftgrain)
aubio_pvoc_rdo(self.o, fftgrain, output)
for index in range(hop_size):
for channel in range(channels):
self.assertEqual(0., fvec_read_sample(output, channel, index))
del input
del fftgrain
def test_ones(self):
""" run phasevoc object on ones """
input = new_fvec(hop_size, channels)
fftgrain = new_cvec(buf_size, channels)
output = new_fvec(hop_size, channels)
for index in range(hop_size):
for channel in range(channels):
fvec_write_sample(input, 1., channel, index)
self.assertEqual(1., fvec_read_sample(input, channel, index))
# make sure the first buf_size-hop_size samples are zeroes
for i in range(buf_size/hop_size - 1):
aubio_pvoc_do (self.o, input, fftgrain)
aubio_pvoc_rdo(self.o, fftgrain, output)
for index in range(hop_size):
for channel in range(channels):
self.assertAlmostEqual(0., fvec_read_sample(output, channel, index), precision)
# make sure the first non zero input is correctly resynthesised
aubio_pvoc_do (self.o, input, fftgrain)
aubio_pvoc_rdo(self.o, fftgrain, output)
for index in range(hop_size):
for channel in range(channels):
self.assertAlmostEqual(1., fvec_read_sample(output, channel, index), precision)
del input
del fftgrain