Traditional Chinese medicine emphasizes that the strength of sound is closely related to the health of the body. Generally speaking, a strong voice represents good health and sufficient qi and blood, while a weak voice may indicate weakness and insufficient qi and blood. This viewpoint is known in traditional Chinese medicine theory as "the strong sound represents the solid, and the light sound represents the deficiency.".
In traditional Chinese medicine, sound is regarded as one of the external manifestations of the functions of the five organs and six viscera in the human body. When the functions of the five organs and six organs are normal, the voice of the human body will appear loud and full, while when the functions of the five organs and six organs are abnormal, the voice of the human body will appear weak and small. Therefore, traditional Chinese medicine uses auscultation to understand the patient's condition, and judges the patient's physical condition by observing the strength, height, clarity, and other characteristics of the patient's voice.
中医强调，声音的强弱与身体的健康状况有密切关系。一般来说，声音壮实则代表身体健康、气血充足，而声音轻微则可能表示身体虚弱、气血不足。这种观点在中医理论中被称为“音壮为实，音轻为虚”。

在中医中，声音被视为人体五脏六腑功能的外在表现之一。当五脏六腑功能正常时，人体的声音就会显得宏亮、饱满，而当五脏六腑功能异常时，人体的声音就会显得微弱、细小。因此，中医通过听诊来了解患者的病情，通过观察患者声音的强弱、高低、清浊等特征，来判断患者的身体状况。