People normally If no ordinary It may be small chirp Or go big bass The ancients said, If a man has a voice while talking normally, it is still difficult because of that. What does not work for a stable Even the sound itself is forced to stay at the same level I do not talk as tone of voice, audio, and so on, but this is rare. And in the rare I will only add to the mystique. This belief is even more accurate. If you give away to a good faith belief it is one of Thailand's ancient times to the present.