get_labels.py

import numpy as np
import os

DATA_PATH = "./data/"

# Input: Folder Path
# Output: Tuple (Label, Indices of the labels, one-hot encoded labels)
def get_labels(path=DATA_PATH):
    labels = os.listdir(path)
    label_indices = np.arange(0, len(labels))
    return labels, label_indices, to_categorical(label_indices)

savedatatoarray.py

import numpy as np

def save_data_to_array(path=DATA_PATH, max_pad_len=11):
    labels, _, _ = get_labels(path)

    for label in labels:
        # Init mfcc vectors
        mfcc_vectors = []

        wavfiles = [path + label + '/' + wavfile for wavfile in os.listdir(path + '/' + label)]
        for wavfile in wavfiles:
            mfcc = wav2mfcc(wavfile, max_pad_len=max_pad_len)
            mfcc_vectors.append(mfcc)
        np.save(label + '.npy', mfcc_vectors)