def test_py_c_equal(self):
audio, sampling_rate, onsets = modal.get_audio_file('piano_G2.wav')
audio = audio[0:4096]
frame_size = 512
hop_size = 512
py_odf = SpectralDifferenceODF()
py_odf.set_frame_size(frame_size)
py_odf.set_hop_size(hop_size)
c_odf = CSpectralDifferenceODF()
c_odf.set_frame_size(frame_size)
c_odf.set_hop_size(hop_size)
# if necessary, pad the input signal
if len(audio) % hop_size != 0:
audio = np.hstack((audio, np.zeros(hop_size - (len(audio) % hop_size),
dtype=np.double)))
# get odf samples
odf_size = len(audio) / hop_size
py_samples = np.zeros(odf_size, dtype=np.double)
c_samples = np.zeros(odf_size, dtype=np.double)
py_odf.process(audio, py_samples)
c_odf.process(audio, c_samples)
assert len(py_samples) == len(c_samples)
for i in range(len(py_samples)):
assert_almost_equals(py_samples[i], c_samples[i],
places=self.FLOAT_PRECISION)
def test_py_c_equal(self):
audio, sampling_rate, onsets = modal.get_audio_file('piano_G2.wav')
audio = audio[0:4096]
frame_size = 512
hop_size = 512
py_odf = SpectralDifferenceODF()
py_odf.set_frame_size(frame_size)
py_odf.set_hop_size(hop_size)
c_odf = CSpectralDifferenceODF()
c_odf.set_frame_size(frame_size)
c_odf.set_hop_size(hop_size)
# if necessary, pad the input signal
if len(audio) % hop_size != 0:
audio = np.hstack((audio,
np.zeros(hop_size - (len(audio) % hop_size),
dtype=np.double)))
# get odf samples
odf_size = len(audio) / hop_size
py_samples = np.zeros(odf_size, dtype=np.double)
c_samples = np.zeros(odf_size, dtype=np.double)
py_odf.process(audio, py_samples)
c_odf.process(audio, c_samples)
assert len(py_samples) == len(c_samples)
for i in range(len(py_samples)):
assert_almost_equals(py_samples[i],
c_samples[i],
places=self.FLOAT_PRECISION)
def test_py_c_equal_rt(self):
audio, sampling_rate, onsets = modal.get_audio_file('piano_G2.wav')
audio = audio[0:4096]
frame_size = 256
hop_size = 256
py_odf = SpectralDifferenceODF()
py_odf.set_frame_size(frame_size)
py_odf.set_hop_size(hop_size)
c_odf = CSpectralDifferenceODF()
c_odf.set_frame_size(frame_size)
c_odf.set_hop_size(hop_size)
# if necessary, pad the input signal
if len(audio) % hop_size != 0:
audio = np.hstack((audio,
np.zeros(hop_size - (len(audio) % hop_size),
dtype=np.double)))
# get odf samples
audio_pos = 0
while audio_pos <= len(audio) - frame_size:
frame = audio[audio_pos:audio_pos + frame_size]
py_odf_value = py_odf.process_frame(frame)
c_odf_value = c_odf.process_frame(frame)
assert_almost_equals(py_odf_value,
c_odf_value,
places=self.FLOAT_PRECISION)
audio_pos += hop_size
def test_py_c_equal_rt(self):
audio, sampling_rate, onsets = modal.get_audio_file('piano_G2.wav')
audio = audio[0:4096]
frame_size = 256
hop_size = 256
py_odf = SpectralDifferenceODF()
py_odf.set_frame_size(frame_size)
py_odf.set_hop_size(hop_size)
c_odf = CSpectralDifferenceODF()
c_odf.set_frame_size(frame_size)
c_odf.set_hop_size(hop_size)
# if necessary, pad the input signal
if len(audio) % hop_size != 0:
audio = np.hstack((audio, np.zeros(hop_size - (len(audio) % hop_size),
dtype=np.double)))
# get odf samples
audio_pos = 0
while audio_pos <= len(audio) - frame_size:
frame = audio[audio_pos:audio_pos+frame_size]
py_odf_value = py_odf.process_frame(frame)
c_odf_value = c_odf.process_frame(frame)
assert_almost_equals(py_odf_value, c_odf_value,
places=self.FLOAT_PRECISION)
audio_pos += hop_size