wav2raw.py

from scipy.io import wavfile
import os 
import h5py

trainroot = ['train-clean-100-wav/', 'train-clean-360-wav/', 'train-other-500-wav/']
devroot = ['dev-clean/', 'dev-other/']
testroot = ['test-clean/']

"""convert wav files to raw wave form and store them in the disc 
"""

# store train 
h5f = h5py.File('train-Librispeech.h5', 'w')
for rootdir in trainroot:
    for subdir, dirs, files in os.walk(rootdir):
        for file in files:
            if file.endswith('.wav'):
                fullpath = os.path.join(subdir, file)
                fs, data = wavfile.read(fullpath)
                h5f.create_dataset(file[:-4], data=data)
                print(file[:-4])
h5f.close()

# store dev 
h5f = h5py.File('dev-Librispeech.h5', 'w')
for rootdir in devroot:
    for subdir, dirs, files in os.walk(rootdir):
        for file in files:
            if file.endswith('.wav'):
                fullpath = os.path.join(subdir, file)
                fs, data = wavfile.read(fullpath)
                h5f.create_dataset(file[:-4], data=data)
                print(file[:-4])
h5f.close()

# store test
h5f = h5py.File('test-Librispeech.h5', 'w')
for rootdir in testroot:
    for subdir, dirs, files in os.walk(rootdir):
        for file in files:
            if file.endswith('.wav'):
                fullpath = os.path.join(subdir, file)
                fs, data = wavfile.read(fullpath)
                h5f.create_dataset(file[:-4], data=data)
                print(file[:-4])
h5f.close()