ref: 398c1c5c18d85587e67ad6d4bee3f25ce37bf437
dir: /tests/python/pitchdetection.py/
import unittest
from aubio.aubiowrapper import *
buf_size = 4096
hop_size = 512
channels = 1
samplerate = 44100.
class pitchdetection_test_case(unittest.TestCase):
def setUp(self, type = aubio_pitch_yinfft, mode = aubio_pitchm_freq):
self.create(type=type)
def create(self, type = aubio_pitch_yinfft,
mode = aubio_pitchm_freq):
self.type = type
self.o = new_aubio_pitchdetection(buf_size, hop_size,
channels, int(samplerate), type, mode)
def tearDown(self):
del_aubio_pitchdetection(self.o)
def test_pitchdetection(self):
""" create and delete pitchdetection """
pass
def test_pitchdetection_run_zeroes(self):
""" run pitchdetection on an empty buffer """
vec = new_fvec(buf_size, channels)
for i in range(100):
self.assertEqual(aubio_pitchdetection(self.o,vec),0.)
del vec
def test_pitchdetection_run_4_impulses(self):
""" run pitchdetection on a train of 4 impulses """
vec = new_fvec(buf_size, channels)
fvec_write_sample(vec,-1.,0, 0)
fvec_write_sample(vec, 1.,0, buf_size/4)
fvec_write_sample(vec,-1.,0, buf_size/2)
fvec_write_sample(vec, 1.,0,3*buf_size/4)
frequency = samplerate/2*4/buf_size
for i in range(100):
self.assertEqual(aubio_pitchdetection(self.o,vec),frequency)
del vec
def test_pitchdetection_run_4_positive_impulses(self):
""" run pitchdetection on a train of 4 positive impulses of arbitrary size """
vec = new_fvec(buf_size, channels)
frequency = samplerate/2*8/buf_size
for i in range(100):
fvec_write_sample(vec, 2.-.01*i,0, 0)
fvec_write_sample(vec, 2.-.01*i,0, buf_size/4)
fvec_write_sample(vec, 2.-.01*i,0, buf_size/2)
fvec_write_sample(vec, 2.-.01*i,0,3*buf_size/4)
self.assertAlmostEqual(aubio_pitchdetection(self.o,vec),frequency,1)
del vec
def test_pitchdetection_run_4_negative_impulses(self):
""" run pitchdetection on a train of 4 negative impulses of arbitrary size """
vec = new_fvec(buf_size, channels)
frequency = samplerate/2*8/buf_size
for i in range(1,100):
fvec_write_sample(vec,-.01*i,0, 0)
fvec_write_sample(vec,-.01*i,0, buf_size/4)
fvec_write_sample(vec,-.01*i,0, buf_size/2)
fvec_write_sample(vec,-.01*i,0,3*buf_size/4)
self.assertAlmostEqual(aubio_pitchdetection(self.o,vec),frequency,1)
del vec
def test_pitchdetection_run_8_impulses(self):
""" run pitchdetection on a train of 8 impulses """
vec = new_fvec(buf_size, channels)
fvec_write_sample(vec, 1.,0, 0)
fvec_write_sample(vec,-1.,0, buf_size/8)
fvec_write_sample(vec, 1.,0, buf_size/4)
fvec_write_sample(vec,-1.,0,3*buf_size/8)
fvec_write_sample(vec, 1.,0, buf_size/2)
fvec_write_sample(vec,-1.,0,5*buf_size/8)
fvec_write_sample(vec, 1.,0,3*buf_size/4)
fvec_write_sample(vec,-1.,0,7*buf_size/8)
for i in range(100):
self.assertAlmostEqual(aubio_pitchdetection(self.o,vec),
samplerate/2/buf_size*8, 1)
del vec
"""
class pitchdetection_yin_test_case(pitchdetection_test_case):
def setUp(self, type = aubio_pitch_yin):
self.create(type=type)
class pitchdetection_fcomb_test_case(pitchdetection_test_case):
def setUp(self, type = aubio_pitch_fcomb):
self.create(type=type)
class pitchdetection_mcomb_test_case(pitchdetection_test_case):
def setUp(self, type = aubio_pitch_mcomb):
self.create(type=type)
class pitchdetection_schmitt_test_case(pitchdetection_test_case):
def setUp(self, type = aubio_pitch_schmitt):
self.create(type=type)
"""
if __name__ == '__main__':
unittest.main()