def apply_effects_sox(audio_signal, filters):
"""
apply_effects_sox takes an AudioSignal object and a list of SoXFilter objects
and sequentially applies each filter to the signal.
Args:
audio_signal (AudioSignal): AudioSignal object
filters (list): List of SoXFilter objects
Returns:
augmented_signal (AudioSignal): A new AudioSignal object, with the audio data from
audio_signal after applying filters
"""
# lazy load to avoid circular import
from . import AudioSignal
audio_data = audio_signal.audio_data
tfm = sox.Transformer()
for filter_ in filters:
tfm = filter_(tfm)
augmented_data = tfm.build_array(input_array=audio_data.T,
sample_rate_in=audio_signal.sample_rate)
augmented_signal = audio_signal.make_copy_with_audio_data(augmented_data)
augmented_signal._effects_applied += filters
return augmented_signal
def do_transform(y):
tfm = sox.Transformer()
tfm.vol(0.5)
y_out = tfm.build_array(input_array=y, sample_rate_in=1000)
return y_out
import soxbindings as sox import sys # python demo.py tests/data/input.wav # create transformer tfm = sox.Transformer() # trim the audio between 5 and 10.5 seconds. tfm.trim(5, 10.5) # apply compression tfm.compand() # apply a fade in and fade out tfm.fade(fade_in_len=1.0, fade_out_len=0.5) # create an output file. tfm.build_file(sys.argv[-1], 'demo_output.wav')
def load_soxbindings(fp):
tfm = soxbindings.Transformer()
array_out = tfm.build_array(input_filepath=fp)
return array_out