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parquet2csv_wav.py

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+# REQUIREMENTS
+# $ pip install scipy
+# $ pip install "polars[all]"
+# You may need to install snappy in order to run this script:
+# $ sudo pacman -S snappy
+# $ pip install python-snappy
+
+import polars as pl
+import numpy as np
+from scipy.io.wavfile import write
+
+import os
+n_cores = str(os.cpu_count())
+os.environ['OMP_NUM_THREADS'] = n_cores
+os.environ['MKL_NUM_THREADS'] = n_cores
+
+if not os.path.isdir('wavs'):
+	os.makedirs('wavs')
+
+columns = ['ytid', 'ytid_seg', 'start', 'end', 'sentiment', 'happiness', 'sadness', 'anger', 'fear', 'disgust', 'surprise']
+
+df = pl.read_parquet('sqe_messai.parquet', columns = columns)
+
+df.write_csv('sqe_messai_nowav.csv')
+
+print(df)
+
+columns2 = ['ytid_seg', 'wav2numpy']
+
+df2 = pl.read_parquet('sqe_messai.parquet', use_pyarrow=False, columns = columns2)
+
+def numpy2wav(row):
+	segment = os.path.splitext(os.path.basename(os.path.normpath(row[0])))[0]
+	print('PROCESSED:', segment)
+	write('wavs/' + segment + '.wav', 16000, np.array(row[1]))
+	return segment
+
+df2.apply(lambda x: numpy2wav(x))