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+In [30]:
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+import os
+from scipy import io
+import numpy as np
+import matplotlib.pyplot as plt
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+plt.figure(figsize=(8,6))
+path = './aware_raw/1/' # Take subject #1 as an example
+for idx, filename in enumerate(os.listdir(path)):
+ fs, data = io.wavfile.read(path+filename)
+ data = data/(2**15) # Normalize from 16-bit PCM to [-1,1]
+ plt.subplot(3,3,idx+1)
+ plt.plot(np.array(range(len(data)))/fs, data)
+ plt.title(filename)
+ plt.xlabel('Time (sec)')
+ plt.ylabel('Amplitude')
+plt.tight_layout()
+plt.show()
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