The properties of sound are four properties (physical properties) such as pitch, strength, length, and timbre. These four properties are the most important components of music. They give music its colorful color and pure soul, making music a unique language for mankind. The pitch of the sound depends on the frequency of vibration of the sounding body (the number of vibrations per second). If the vibration frequency is fast, the sound will be high; if the vibration frequency is slow, the sound will be low. The length of the sound depends on the duration of the vibration of the sounding body. If the vibration time is long, the sound will be long; if the vibration time is short, the sound will be short.

The strength of the sound depends on the amplitude of the vibration of the sounding body. If the vibration amplitude is large, the sound will be strong; if the vibration amplitude is small, the sound will be weak. The color of the sound depends on the texture, shape, size, quality and other aspects of the sound body.

Propagation of sound:

The propagation of sound requires material. In physics, such material is called a medium. This medium can be air, water, or solid. Of course, in a vacuum, sound Cannot spread. The speed of sound propagation in different media is also different. The propagation speed of sound is related to the counterbalance force of the medium. The counterbalance force means that when a molecule of a substance deviates from its equilibrium position, the surrounding molecules will push it back to the equilibrium position. The greater the counterbalance force, the greater the counterbalance force. Sound travels faster.