def test_mono_audio_file_construction(self, shared_datadir):
file_name = (shared_datadir / 'audio/test_sine.wav').resolve()
audio = AudioBuffer(file_name)
assert audio.get_audio().shape == (44100,)
assert audio.get_sample_rate() == 44100
assert audio.channels == 1
assert audio.file_name == file_name
def test_array_construction_mono(self):
samples = np.array([1,2,3,4,5,6,7,8,9,10])
audio = AudioBuffer(samples, 44100)
assert np.array_equal(audio.get_audio(), samples)
assert audio.get_sample_rate() == 44100
assert audio.channels == 1
assert audio.file_name == ''
def test_list_construction_stereo(self):
samples = [[1,2,3,4,5],[6,7,8,9,10]]
audio = AudioBuffer(samples, 44100)
assert np.array_equal(audio.get_audio(), samples)
assert audio.get_sample_rate() == 44100
assert audio.channels == 2
assert audio.file_name == ''
def test_audio_file_load_resample(self, shared_datadir):
file_name = (shared_datadir / 'audio/test_sine.wav').resolve()
audio = AudioBuffer()
audio.load(file_name, 88200)
assert audio.get_audio().shape == (88200,)
assert audio.get_sample_rate() == 88200
assert audio.channels == 1
assert audio.file_name == file_name
def test_stereo_audio_file_load(self, shared_datadir):
file_name = (shared_datadir / 'audio/test_sine_stereo.wav').resolve()
audio = AudioBuffer()
audio.load(file_name, mono=False)
assert audio.get_audio().shape == (2, 44100)
assert audio.get_sample_rate() == 44100
assert audio.channels == 2
assert audio.file_name == file_name
def test_save_mono_create_dir(self, tmp_path):
samples = self.make_test_sine(44100, 440, 44100)
audio = AudioBuffer(samples, 44100)
file_name = (tmp_path / 'temp_dir/test_save.wav').resolve()
audio.save(file_name)
audioReload = AudioBuffer(file_name)
np.testing.assert_array_almost_equal(audio.get_audio(), audioReload.get_audio())
assert audioReload.get_sample_rate() == 44100
assert audioReload.channels == 1
assert audioReload.file_name == file_name
def test_save_mono_normalize(self, tmp_path):
samples = self.make_test_sine(44100, 400, 44100)
samplesHalfAmp = samples * 0.5
audio = AudioBuffer(samples, 44100)
audioNormed = AudioBuffer(samples, 44100)
file_name = (tmp_path / 'test_save.wav').resolve()
audio.save(file_name, normalize=True)
audioReload = AudioBuffer(file_name)
# Make sure it looks correct
np.testing.assert_array_almost_equal(audioNormed.get_audio(), audioReload.get_audio(), decimal=5)
assert audioReload.get_audio().shape == (44100,)
assert audioReload.get_sample_rate() == 44100
assert audioReload.channels == 1
assert audioReload.file_name == file_name
def test_save_stereo(self, tmp_path):
# Create a stereo AudioBuffer
samplesL = self.make_test_sine(44100, 100, 44100)
samplesR = self.make_test_sine(44100, 200, 44100)
samples = np.array([samplesL, samplesR])
audio = AudioBuffer(samples, 44100)
# Save Audio Buffer
file_name = (tmp_path / 'test_save.wav').resolve()
audio.save(file_name)
# Reload stereo audio file
audioReload = AudioBuffer()
audioReload.load(file_name, mono=False)
# Make sure it looks correct
np.testing.assert_array_almost_equal(audio.get_audio(), audioReload.get_audio())
assert audioReload.get_audio().shape == (2,44100)
assert audioReload.get_sample_rate() == 44100
assert audioReload.channels == 2
assert audioReload.file_name == file_name
def test_empty_construction(self):
audio = AudioBuffer()
assert audio.get_audio() == None
assert audio.get_sample_rate() == None
assert audio.channels == 0
assert audio.file_name == ''
