Abstract
Acoustics is in the physics most develops, the content to be richest, one of theory most complete disciplines. Acoustics mainly studies and establishes the sound the physical property with it between the subjective sensation quantity relation which produces in the sense of hearing, the understanding sense of hearing to the sound signal analysis processing process. In this process, to the sound energy dissemination's research is very important. Take the dimensional analysis as the foundation, the present paper through to the acoustic intensity, rattles, acoustics characteristic quantity and so on tonality, frequency analyses, elaborated that between the sound wave objective survey quantity and the subjective sensation quantity relates. To person's ear structural research's foundation, and from the human body health's angle explained the sound wave aspect appropriate scope and should pay attention physical reason. Through introduct ultrasonic wave, infrasonic wave and so on machine-made principle, explains the sound energy the utility question.
