1, pitch
Pitch refers to the sound level, which depends on the vibration speed of the pronunciation body. The faster the vibration, the higher the pitch, otherwise the lower the pitch. The speed at which an object vibrates is determined by the shape of the pronunciation body, as shown in the following figure:
Large, thick, long and loose objects vibrate slowly, and their sounds are high and low.
Small, thin, thin, short and tight objects vibrate quickly and have high sound.
2. Sound intensity
Sound intensity refers to the strength of sound, which depends on the vibration amplitude of the pronunciation body. The greater the amplitude, the stronger the sound, and vice versa. The strength of sound is determined by the strength of pronunciation. The greater the intensity, the greater the amplitude and the stronger the sound intensity. The intensity is small, the amplitude is small, and the sound intensity is weak.
3. Sound length
The sound length refers to the length of the sound, which is determined by the duration of the vibration of the object when pronouncing. The longer the pronunciation body vibrates, the longer the sound will be, otherwise it will be shorter. Generally speaking, the sound length is not the main means to distinguish meaning in Chinese, but a natural attribute of pronunciation, and it often appears as an accompanying feature.
4. Good quality
Sound quality, also called timbre, refers to the essential characteristics of sound, which is the most fundamental feature that distinguishes a sound from other sounds. Depending on the sound wave form of pronunciation, different sound waves have different sound quality.
Extended data:
The spread of sound:
1, sound propagation needs substance, which is called medium in physics. This medium can be air, water or solid. Of course, in a vacuum, sound cannot spread.
2. Sound travels at different speeds in different media. The propagation speed of sound is related to the equilibrium resistance of the medium. Equilibrium resistance means that when a molecule of a substance deviates from its equilibrium position, the surrounding molecules will push it back to its equilibrium position. The greater the equilibrium resistance, the faster the sound travels. The resistance balance of water is greater than that of air, and that of iron is greater than that of water.
3. Sound propagation is also related to temperature and resistance.
4. Sound will also be refracted because of the obstruction of external substances. For example, when people shout at a mountain, they can hear their own echoes. Sound travels farther at night than during the day, because during the day, sound meets rising hot air, which quickly refracts sound into the air; When the cold air drops at night, the sound will spread slowly and calmly, and it is not easy to refract.
5. The speed of sound propagation in air is also related to pressure and temperature.
6. The speed of sound in air changes with the change of temperature. When the temperature increases/decreases by 5℃, the speed of sound increases/decreases by 3m/s. ..
7. The propagation speed of sound increases with the increase of material toughness, while the density of material decreases. Sound travels faster in ice than in water. The toughness of ice is stronger than that of water, but the density of water is greater than that of ice. This reduces the difference in sound propagation speed between water and ice. The format can be written as:
c=ρ*C
C: The speed of sound
C: stiffness coefficient.
Rho: density
Baidu encyclopedia-sound