How to evaluate the good and bad of a sound? This issue is worth discussing. That is, it is mainly based on two aspects. The first is subjective evaluation, that is, to feel the sound of the sound by the auditory organs of human ears; the second is objective evaluation, that is, the quality of the sound is real. Subjective evaluations are listening, objective evaluation is measured by testing, or measured by testing standards. If these two methods are used to evaluate the goodness and differences of the tone at the same time, it is more comprehensive.

If subjective evaluation is completely used to estimate the good and poor sound quality, there are some imperfections. There are many factors that affect subjective evaluation.

1. The sensitivity of human ears

Due to the physiological structure of each person, the differences in health and development, the sensitivity of each person's hearing sensitivity is different, and the hearing sensitivity of the left and right ears is also different. In this way, everyone's auditory sensitivity is different. Just like the vision of the human body, some human vision is 1.5 left, 1.2 right, and some people are 0.5 left. The right 1 is different. So this has a great impact on the evaluation of sound.

2. The impact of age on hearing

Due to physiological reasons, as the age increases, the auditory organs, such as eardrums, and cochlear tissue elasticity of different frequencies, the ability to identify high -frequency sounds will gradually decrease, which will affect the accuracy of sound quality evaluation. sex.

3. The influence of education level

A person's cultural level affects subjective evaluation. Because the field of acoustics is a multi -disciplinary, complex physical phenomenon, it is closely related to the disciplines of physics, mathematics, architecture, music. If you want to have a comprehensive and accurate understanding of the tone, you need to have a considerable level and quality level in all aspects. Therefore, a person's comprehensiveness of education and the depth of the level affect the evaluation of sound.

4, art appreciation ability

Everyone's artistic literacy and artistic concepts are different, resulting in different understanding of the artistic expression of sound color. This is also one of the factors that affect the evaluation of sound.

5. The psychological influence of man

Everyone has different feelings in different periods, different moods, different living environments, and different psychological states (mentality). This also affects the subjective evaluation of sound.

6. Everyone's preference

Each may belong to this or the art genre in different art areas, so each person has a psychological tendency of preference, which is allowed. Therefore, this factor also affects the evaluation of sound quality.

7, different countries and nations

Different countries, different ethnic groups, different regions and different times have different standards of sound and listening habits. Therefore, there are great differences in the evaluation of sound.