音调、响度和音色,从不同的方面反映了声音的特征,是声音的三个要素.正确认识声音的特性,一要弄清它们的物理含义:二要知道它们是由什么因素决定的:三要了解通过什么方法可以改变常见发声体(如乐器)发出的声音,通过改变发声体的振动频率(改变弦乐器的粗细、长度、张紧程度)、振幅(改变用力大小),可以使发声体发出音调不同、响度不同的声音;四要注意“一个范围”(人耳听觉范围).下面就分别对声音的这三个特性做以介绍.音调音调指声音的高低,它与物体振动的快慢有关.频率是表示物体振动快慢的物理量,物体振动得越快,频 Tone, loudness and timbre reflect the characteristics of the sound from different aspects and are the three elements of the sound. Correctly understanding the characteristics of the sound, one must understand their physical meaning: Second, we must know what factors they determine: To find out ways to change the sound of a common sounding body such as a musical instrument, you can make the sounding body sound by changing the vibration frequency of the sounding body (changing the thickness, length and tension of the stringed instrument) and the amplitude (changing the force) Different tones, different loudness sound; Fourth, pay attention to “a range ” (human ear auditory range) .In the following, the three characteristics of the sound are introduced respectively.Pitch tone refers to the level of the sound, which vibrates with the object Speed ​​related to the frequency is the physical speed of the object that the vibration, the faster the vibration object, the frequency