def test_trim(atol=1e-5, rtol=1e-8):
# Things we want to test:
# 1. Jam trimmed correctly (mainly handled by jams.slice)
# 2. value dict updated correctly (event_time, event_duration, source_time)
# 3. scaper sandbox updated correctly (n_events, poly, gini, duration)
# 4. audio trimmed correctly
tmpfiles = []
with _close_temp_files(tmpfiles):
# Create all necessary temp files
orig_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
orig_jam_file = tempfile.NamedTemporaryFile(suffix='.jams',
delete=True)
trim_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
trim_jam_file = tempfile.NamedTemporaryFile(suffix='.jams',
delete=True)
trimstrict_wav_file = tempfile.NamedTemporaryFile(suffix='.wav',
delete=True)
trimstrict_jam_file = tempfile.NamedTemporaryFile(suffix='.jams',
delete=True)
tmpfiles.append(orig_wav_file)
tmpfiles.append(orig_jam_file)
tmpfiles.append(trim_wav_file)
tmpfiles.append(trim_jam_file)
tmpfiles.append(trimstrict_wav_file)
tmpfiles.append(trimstrict_jam_file)
# --- Create soundscape and save to tempfiles --- #
sc = scaper.Scaper(10, FG_PATH, BG_PATH)
sc.protected_labels = []
sc.ref_db = -50
sc.add_background(label=('const', 'park'),
source_file=('choose', []),
source_time=('const', 0))
# Add 5 events
start_times = [0.5, 2.5, 4.5, 6.5, 8.5]
for event_time in start_times:
sc.add_event(label=('const', 'siren'),
source_file=('choose', []),
source_time=('const', 5),
event_time=('const', event_time),
event_duration=('const', 1),
snr=('const', 10),
pitch_shift=None,
time_stretch=None)
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
# --- Trim soundscape using scaper.trim with strict=False --- #
scaper.trim(orig_wav_file.name,
orig_jam_file.name,
trim_wav_file.name,
trim_jam_file.name,
3,
7,
no_audio=False)
# --- Validate output --- #
# validate JAMS
trimjam = jams.load(trim_jam_file.name)
trimann = trimjam.annotations.search(namespace='scaper')[0]
# Time and duration of annotation observation must be changed, but
# values in the value dict must remained unchanged!
for event in trimann.data:
if event.value['role'] == 'background':
assert (event.time == 0 and event.duration == 4
and event.value['event_time'] == 0
and event.value['event_duration'] == 10
and event.value['source_time'] == 0)
else:
if event.time == 0:
assert (event.duration == 0.5
and event.value['event_time'] == 2.5
and event.value['event_duration'] == 1
and event.value['source_time'] == 5)
elif event.time == 1.5:
assert (event.duration == 1
and event.value['event_time'] == 4.5
and event.value['event_duration'] == 1
and event.value['source_time'] == 5)
elif event.time == 3.5:
assert (event.duration == 0.5
and event.value['event_time'] == 6.5
and event.value['event_duration'] == 1
and event.value['source_time'] == 5)
else:
assert False
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
trim_wav, sr = soundfile.read(trim_wav_file.name)
assert np.allclose(trim_wav,
orig_wav[3 * sr:7 * sr],
atol=atol,
rtol=rtol)
def test_trim(atol=1e-5, rtol=1e-8):
# Things we want to test:
# 1. Jam trimmed correctly (mainly handled by jams.slice)
# 2. value dict updated correctly (event_time, event_duration, source_time)
# 3. scaper sandbox updated correctly (n_events, poly, gini, duration)
# 4. audio trimmed correctly
tmpfiles = []
with _close_temp_files(tmpfiles):
# Create all necessary temp files
orig_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
orig_jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
trim_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
trim_jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
trimstrict_wav_file = tempfile.NamedTemporaryFile(
suffix='.wav', delete=True)
trimstrict_jam_file = tempfile.NamedTemporaryFile(
suffix='.jams', delete=True)
tmpfiles.append(orig_wav_file)
tmpfiles.append(orig_jam_file)
tmpfiles.append(trim_wav_file)
tmpfiles.append(trim_jam_file)
tmpfiles.append(trimstrict_wav_file)
tmpfiles.append(trimstrict_jam_file)
# --- Create soundscape and save to tempfiles --- #
sc = scaper.Scaper(10, FG_PATH, BG_PATH)
sc.protected_labels = []
sc.ref_db = -50
sc.add_background(label=('const', 'park'),
source_file=('choose', []),
source_time=('const', 0))
# Add 5 events
start_times = [0.5, 2.5, 4.5, 6.5, 8.5]
for event_time in start_times:
sc.add_event(label=('const', 'siren'),
source_file=('choose', []),
source_time=('const', 5),
event_time=('const', event_time),
event_duration=('const', 1),
snr=('const', 10),
pitch_shift=None,
time_stretch=None)
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
# --- Trim soundscape using scaper.trim with strict=False --- #
scaper.trim(orig_wav_file.name, orig_jam_file.name,
trim_wav_file.name, trim_jam_file.name,
3, 7, no_audio=False)
# --- Validate output --- #
# validate JAMS
trimjam = jams.load(trim_jam_file.name)
trimann = trimjam.annotations.search(namespace='scaper')[0]
# Time and duration of annotation observation must be changed, but
# values in the value dict must remained unchanged!
for event in trimann.data:
if event.value['role'] == 'background':
assert (event.time == 0 and
event.duration == 4 and
event.value['event_time'] == 0 and
event.value['event_duration'] == 10 and
event.value['source_time'] == 0)
else:
if event.time == 0:
assert (event.duration == 0.5 and
event.value['event_time'] == 2.5 and
event.value['event_duration'] == 1 and
event.value['source_time'] == 5)
elif event.time == 1.5:
assert (event.duration == 1 and
event.value['event_time'] == 4.5 and
event.value['event_duration'] == 1 and
event.value['source_time'] == 5)
elif event.time == 3.5:
assert (event.duration == 0.5 and
event.value['event_time'] == 6.5 and
event.value['event_duration'] == 1 and
event.value['source_time'] == 5)
else:
assert False
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
trim_wav, sr = soundfile.read(trim_wav_file.name)
assert np.allclose(trim_wav, orig_wav[3*sr:7*sr], atol=atol, rtol=rtol)
def test_generate_from_jams(atol=1e-5, rtol=1e-8):
# Test for invalid jams: no annotations
tmpfiles = []
with _close_temp_files(tmpfiles):
jam = jams.JAMS()
jam.file_metadata.duration = 10
jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
gen_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
jam.save(jam_file.name)
pytest.raises(ScaperError, scaper.generate_from_jams, jam_file.name,
gen_file.name)
# Test for valid jams files
tmpfiles = []
with _close_temp_files(tmpfiles):
# Create all necessary temp files
orig_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
orig_jam_file = tempfile.NamedTemporaryFile(suffix='.jams',
delete=True)
gen_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
gen_jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
tmpfiles.append(orig_wav_file)
tmpfiles.append(orig_jam_file)
tmpfiles.append(gen_wav_file)
tmpfiles.append(gen_jam_file)
# --- Define scaper --- *
sc = scaper.Scaper(10, FG_PATH, BG_PATH)
sc.protected_labels = []
sc.ref_db = -50
sc.add_background(label=('choose', []),
source_file=('choose', []),
source_time=('const', 0))
# Add 5 events
for _ in range(5):
sc.add_event(label=('choose', []),
source_file=('choose', []),
source_time=('const', 0),
event_time=('uniform', 0, 9),
event_duration=('choose', [1, 2, 3]),
snr=('uniform', 10, 20),
pitch_shift=('uniform', -1, 1),
time_stretch=('uniform', 0.8, 1.2))
# generate, then generate from the jams and compare audio files
# repeat 5 time
for _ in range(5):
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Now add in trimming!
for _ in range(5):
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 5), np.random.uniform(5, 10))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Double trimming
for _ in range(2):
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(8, 10))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(4, 6))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# Tripple trimming
for _ in range(2):
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(8, 10))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 1), np.random.uniform(5, 6))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 1), np.random.uniform(3, 4))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Test with new FG and BG paths
for _ in range(5):
sc.generate(orig_wav_file.name,
orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.generate_from_jams(orig_jam_file.name,
gen_wav_file.name,
fg_path=ALT_FG_PATH,
bg_path=ALT_BG_PATH)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Ensure jam file saved correctly
scaper.generate_from_jams(orig_jam_file.name,
gen_wav_file.name,
jams_outfile=gen_jam_file.name)
orig_jam = jams.load(orig_jam_file.name)
gen_jam = jams.load(gen_jam_file.name)
assert orig_jam == gen_jam
def test_generate_from_jams(atol=1e-5, rtol=1e-8):
# Test for invalid jams: no annotations
tmpfiles = []
with _close_temp_files(tmpfiles):
jam = jams.JAMS()
jam.file_metadata.duration = 10
jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
gen_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
jam.save(jam_file.name)
pytest.raises(ScaperError, scaper.generate_from_jams, jam_file.name,
gen_file.name)
# Test for valid jams files
tmpfiles = []
with _close_temp_files(tmpfiles):
# Create all necessary temp files
orig_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
orig_jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
gen_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=True)
gen_jam_file = tempfile.NamedTemporaryFile(suffix='.jams', delete=True)
tmpfiles.append(orig_wav_file)
tmpfiles.append(orig_jam_file)
tmpfiles.append(gen_wav_file)
tmpfiles.append(gen_jam_file)
# --- Define scaper --- *
sc = scaper.Scaper(10, FG_PATH, BG_PATH)
sc.protected_labels = []
sc.ref_db = -50
sc.add_background(label=('choose', []),
source_file=('choose', []),
source_time=('const', 0))
# Add 5 events
for _ in range(5):
sc.add_event(label=('choose', []),
source_file=('choose', []),
source_time=('const', 0),
event_time=('uniform', 0, 9),
event_duration=('choose', [1, 2, 3]),
snr=('uniform', 10, 20),
pitch_shift=('uniform', -1, 1),
time_stretch=('uniform', 0.8, 1.2))
# generate, then generate from the jams and compare audio files
# repeat 5 time
for _ in range(5):
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Now add in trimming!
for _ in range(5):
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 5), np.random.uniform(5, 10))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Double trimming
for _ in range(2):
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(8, 10))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(4, 6))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# Tripple trimming
for _ in range(2):
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 2), np.random.uniform(8, 10))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 1), np.random.uniform(5, 6))
scaper.trim(orig_wav_file.name, orig_jam_file.name,
orig_wav_file.name, orig_jam_file.name,
np.random.uniform(0, 1), np.random.uniform(3, 4))
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Test with new FG and BG paths
for _ in range(5):
sc.generate(orig_wav_file.name, orig_jam_file.name,
disable_instantiation_warnings=True)
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name,
fg_path=ALT_FG_PATH, bg_path=ALT_BG_PATH)
# validate audio
orig_wav, sr = soundfile.read(orig_wav_file.name)
gen_wav, sr = soundfile.read(gen_wav_file.name)
assert np.allclose(gen_wav, orig_wav, atol=atol, rtol=rtol)
# Ensure jam file saved correctly
scaper.generate_from_jams(orig_jam_file.name, gen_wav_file.name,
jams_outfile=gen_jam_file.name)
orig_jam = jams.load(orig_jam_file.name)
gen_jam = jams.load(gen_jam_file.name)
assert orig_jam == gen_jam
