def audio_batch_padded():
    """
    Create audio fixtures of shape (batch_size=2,) with elements of variable length.
    """
    sample_rate = 16000
    frequency_length = (sample_rate // 2 + 1) // 240 * 3
    test_input = np.zeros((2, sample_rate))
    test_mask_frequency = np.ones((2, frequency_length, 80))
    return test_input, test_mask_frequency

    Create audio fixtures of shape (batch_size=2,) with elements of variable length.
    
tests/estimators/speech_recognition/conftest.py