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Add normalization to sox call. #23

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merged 2 commits into from
Mar 29, 2021
Merged

Add normalization to sox call. #23

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581a33b
Add normalization to sox call.
xfim Mar 26, 2021
6a67266
Update audioProcessing.py
abhirooptalasila Mar 29, 2021
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4 changes: 2 additions & 2 deletions autosub/audioProcessing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ def convert_samplerate(audio_path, desired_sample_rate):
numpy buffer: audio signal stored in numpy array
"""

sox_cmd = "sox {} --type raw --bits 16 --channels 1 --rate {} --encoding signed-integer --endian little --compression 0.0 --no-dither - ".format(
sox_cmd = "sox {} --type raw --bits 16 --channels 1 --rate {} --encoding signed-integer --endian little --compression 0.0 --no-dither norm -3.0 - ".format(
quote(audio_path), desired_sample_rate)
try:
output = subprocess.check_output(
Expand All @@ -45,4 +45,4 @@ def convert_samplerate(audio_path, desired_sample_rate):
raise OSError(e.errno, "SoX not found, use {}hz files or install it: {}".format(
desired_sample_rate, e.strerror))

return np.frombuffer(output, np.int16)
return np.frombuffer(output, np.int16)