testing.py 文件源码

def make_split_audio_array(folder, num_splits = 5):
    lst = []
    for filename in os.listdir(folder):
        if filename.endswith('wav'):
            normed_sig = make_standard_length(filename)
            chunk = normed_sig.shape[0]/num_splits
            for i in range(num_splits - 1):
                lst.append(normed_sig[i*chunk:(i+2)*chunk])
    lst = np.array(lst)
    lst = lst.reshape(lst.shape[0], -1)
    return lst

# for input wav file outputs (13, 2999) mfcc np array