How to use the audiofile.AudioFile.gen_default_wav function in audiofile
To help you get started, we’ve selected a few audiofile examples, based on popular ways it is used in public projects.
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Pezz89 / PySoundConcat / src / sppysound / pitch_shift.py View on Github 
def shift(sigin, pitch):
if np.isnan(pitch):
return sigin
input_filepath = "./.shift_input.wav"
output_filepath = "./.shift_output.wav"
shift_input = AudioFile.gen_default_wav(
input_filepath,
overwrite_existing=True,
mode='w',
channels=1,
)
# Write grain to be shifted to file
shift_input.write_frames(sigin)
# Close file
del shift_input
cents = 1200. * np.log2(pitch)
p_shift_args = ["sox", input_filepath, output_filepath, "pitch", str(cents)]
p = subprocess.Popen(p_shift_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, err) = p.communicate()audiofile
Fast reading of all kind of audio files
