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近代声学的研究对象,远远越出了习慣所指的从20赫到16,000赫之間的空气中的可听声。确切地說,声学是研究机械振动在弹性媒质(包括气体、液体、固体)中产生、传播、影响和利用的科学。它在通訊广播、建筑交通、医疗診断、航海定位、国防及工农业生产等領域,形成許多声学分支,有电声学、建筑声学和房屋声学、語言声学、音乐声学、生理和心理声学、超声学、水声学、噪声和机械振动、分子声学(物理声学)、生物声学、大气声学等。在对以上各个声学分支进行研究工作的同时,都存在有关声学量的测量問題。在所
The object of modern acoustics goes far beyond the audible sound of air in the habit of referring to from 20 Hz to 16,000 Hz. Specifically, acoustics is a science that studies the generation, propagation, influence, and utilization of mechanical vibrations in elastic media, including gases, liquids and solids. It has many acoustic branches in the areas of communications and broadcasting, construction and transportation, medical diagnosis, navigation and positioning, national defense and industrial and agricultural production. There are many fields of electroacoustics, architectural acoustics and house acoustics, speech acoustics, music acoustics, physiology and psychoacoustics, Acoustics, Noise and Mechanical Vibration, Molecular Acoustics (Physical Acoustics), Biological Acoustics, Atmospheric Acoustics, etc. In the study of the above various acoustic branches at the same time, there is the problem of measuring the amount of acoustic. In the place