What does "sweet treble, accurate midrange and heavy bass" mean?

This is a description of the stereo listening effect. In the audio manufacturing industry, it is generally required that the treble is clear, the midrange is transparent, and the bass shock is also the requirement of listening effect.

In the production of audio, technical indicators and listening effects are often not well integrated, which leads to consumers' dissatisfaction. In order to win the market, more and more attention has been paid to the actual listening effect in audio production recently.

Extended data:

Bass drum, the sound frequency is about 27Hz- 146Hz, of which 60Hz- 100Hz will affect the thickness of low frequency, like we listen to some relatively high songs, in which the "drumming" that hits the heart directly will be affected by this sound frequency band.

If the equipment does not perform well at 60Hz- 100Hz, the low-frequency sound will become less impactful and weak, but too much will not work, and it will sound chaotic and uncomfortable. Therefore, it is not easy for low-frequency sound to be excellent. It must be strong and recoverable.

What we generally call human voice is basically between 300 Hz and 500 Hz, which is the middle part of the intermediate frequency. The bass range will be lower and the female voice range will be higher. A good voice is full of emotion. If the equipment performs well at 300Hz-500Hz, then the sound we hear is clear enough and the mouth shape is appropriate. Otherwise, it will look dull, just like talking to you through a door.

If you are careful enough, you will find that the frequency response of some top headphones even exceeds the range that people can hear. Although the ears can't hear these sounds, the brain can actually perceive them, so the sound will be excellent and realistic enough.

It is worth mentioning that the human ear's perception of sound will continue to weaken with the increase of age, just as the hearing range of normal ears is 20 Hz-20Hz-20000Hz. With the increase of age, this range will become smaller and smaller, and it will become imperceptible for extremely low frequency and extremely high frequency. Therefore, in fact, some elderly people are not as rich as a young man, so trust your ears while you are still young.

References:

Hertz? Baidu baike