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鼓是用皮膜(现在也有用塑料膜的)绷在圆桶状物体一面或两面而形成,在敲击鼓膜时,引起膜的振动,推动空气而发声。那圆桶的作用与扬声器的音箱相似。那么,大家就可以推断,鼓膜面积越大振动频率越低,可能运动的振幅越大,声波传输也越远。击鼓有许多技巧,把这样年代久远的简单乐器,运用得非常自如,还能发出极其吸引人的声音。所以,发烧碟离不开
The drum is made of a film (now also useful for plastic film) which is stretched over one or both sides of a drum-shaped object and vibrates the film when the tympanic membrane is struck, pushing the air to sound. That drum has the same effect as the speaker cabinet. Well, we can infer that the greater the tympanic membrane area the lower the vibration frequency, the greater the amplitude of the possible movement, the farther the sound wave is transmitted. Drumming has many tricks to make the simple instruments of this age far and far easier to use and to make extremely engaging sounds. So, can not be separated from the burning disk