What mainly determines the turnover?

It is related to distance, frequency, medium and amplitude.

For example, the farther the distance, the smaller the sound; For example, the closer to infrasound, the smaller the ultrasonic sound, indicating that it is related to frequency; For example, the sound in water is different from that on land, which means it is related to the medium; For example, the heavier the hammer, the louder the sound, which means it is related to the amplitude. It also varies from person to person.

Volume, loudness, refers to the strength of sound, and its objective evaluation scale is the amplitude of sound. The greater the amplitude, the greater the loudness; The smaller the amplitude, the smaller the loudness. The distance from the vocal body is also a factor affecting loudness. The closer to the vocal body, the greater the loudness. The farther away from the vocal body, the less loudness.

Volume, also known as sound intensity and loudness, refers to the subjective feeling of the human ear to the intensity of the sound heard, and its objective evaluation scale is the amplitude of the sound. This feeling comes from the pressure produced by the vibration of the object, that is, the sound pressure. The vibration of an object conducts its vibration energy through different media.

In order to quantify the feeling of sound as a monitorable index, people divide the sound pressure into "levels"-sound pressure levels, so as to objectively express the strength of sound, and its unit is called "decibel" (dB).

Precautions:

The feeling of volume comes from the pressure produced when the object vibrates, that is, the sound pressure. The vibration of an object conducts its vibration energy through different media. In order to quantify the feeling of sound into a monitorable index, people divide the sound pressure into "levels"-sound pressure levels.

It can objectively express the strength of sound, and its unit is called "decibel" (dB). Decibel is a unit to measure the relative loudness of sound, which is about equal to the minimum value of loudness difference that human ears can usually perceive.