When the examinee emits speech, the sound waves originate in the larynx and travel along the trachea, bronchi and alveoli to the chest wall causing resonant vibrations that can be touched by the examiner’s hand, so it is also called tactile tremor. Voice tremor enhancement refers to the increase in resonant vibration caused by the sound waves that originate in the larynx and travel along the trachea, bronchi and alveoli to the chest wall when the examiner touches the person being examined to make speech. So, what are the causes of voice tremor enhancement? The following are the causes of enhanced voice tremor: 1. Inflammatory infiltration in the alveoli, solid lung tissue so that good conduction of speech tremor. (lobar pneumonia solid phase, pulmonary obstruction). 2, close to the pleura of the lung cavity, sound waves in the cavity resonate, especially when the cavity around the inflammatory infiltration and adhesions in the chest wall, it is more conducive to sound transmission, so that the voice tremor enhanced. (cavernous tuberculosis, lung abscess).