def test_replay(jam_in, audio_file):
T = muda.deformers.LogspaceTimeStretch()
S = muda.deformers.PitchShift(n_semitones=1)
P = muda.Pipeline([('time', T), ('pitch', S)])
# Load in the jam and transform it
jam_1 = muda.load_jam_audio(jam_in, audio_file)
jam_muda = next(P.transform(jam_1))
# Load a fresh copy of the jam
jam_2 = muda.load_jam_audio(jam_in, audio_file)
# Pop the audio container out of the jam2 sandbox
_audio = jam_muda.sandbox.muda._audio
jam_new = muda.replay(jam_muda, jam_2)
# 1: check all annotations
for a1, a2 in zip(jam_muda.annotations, jam_new.annotations):
assert a1 == a2
# 2: check audio
assert np.allclose(_audio['y'], jam_new.sandbox.muda._audio['y'])
assert _audio['sr'] == jam_new.sandbox.muda._audio['sr']
# Verify that the objects are in fact distinct
assert jam_muda is not jam_new
def test_serialize_pipeline():
D1 = muda.deformers.LogspaceTimeStretch()
D2 = muda.deformers.LogspaceTimeStretch()
P_orig = muda.Pipeline([('stretch_1', D1), ('stretch_2', D2)])
P_ser = muda.serialize(P_orig)
P_new = muda.deserialize(P_ser)
assert P_orig is not P_new
assert P_orig.get_params() == P_new.get_params()
def test_pipeline(jam_fixture):
D1 = muda.deformers.TimeStretch(rate=2.0)
D2 = muda.deformers.TimeStretch(rate=1.5)
P = muda.Pipeline([('stretch_1', D1), ('stretch_2', D2)])
jam_orig = deepcopy(jam_fixture)
for jam_new in P.transform(jam_orig):
assert jam_new is not jam_orig
__test_time(jam_orig, jam_fixture, 1.0)
# Verify that the state and history objects are intact
__test_deformer_history(D1, jam_new.sandbox.muda.history[0])
__test_deformer_history(D2, jam_new.sandbox.muda.history[-1])
__test_time(jam_orig, jam_new, D1.rate[0] * D2.rate[0])
def test_bad_pipeline_object():
D = muda.deformers.TimeStretch(rate=2.0)
muda.Pipeline([('stretch1', D),
('stretch2', 'not a basetransformer')])
def test_bad_pipeline_unique():
D1 = muda.deformers.TimeStretch(rate=2.0)
D2 = muda.deformers.TimeStretch(rate=1.5)
muda.Pipeline([('stretch', D1), ('stretch', D2)])
import muda
import jams
import wave
jam=jams.JAMS()
j_orig = muda.load_jam_audio(jam, '01-Make_It.wav')
# f=wave.open('01-Make_It.wav','rb')
# params=f.getparams()
# n_channels,samp_width,frame_rate,n_frames=params[:4]
#
# print(samp_width)
pitch=muda.deformers.PitchShift(n_semitones=2)
stretch=muda.deformers.TimeStretch(rate=0.8)
pipline=muda.Pipeline(steps=[('pitch_shift',pitch),
('time_stretch',stretch)])
output_jams=list(pipline.transform(j_orig))
