What elements do audio equipment need?

　　1. Sound quality and timbre

　　Even the same type of instrument will have different sound performance, the most important part is the difference in sound quality. The sound quality of professional audio equipment will also vary due to different internal materials and designer tuning tastes. Of course, noble sound quality and timbre are difficult to appear on ordinary musical instruments, and it is also difficult to appear on low-priced sound systems. What should be paid attention to in cheap audio is whether it can correctly express the difference between different instruments in the recording software. If the recording of the Steinway piano sounds no different from the cheap piano, then there is no way to fully appreciate the beauty of the excellent recording. .

　　2. The distribution and control of the volume sense of the high, medium and low frequency bands

　　The frequency that the average human ear can hear is about 20Hz-20KHz, which is a fairly wide range. Audio equipment should try to emit sound in this complete frequency range, and the effect will be better. It is usually difficult to express the parts at the high and low ends, especially in the lower low frequency parts. Since the human ear is relatively insensitive to these frequency parts, they need strong energy, and the power required for strong energy is also very high. Large, not very high grade equipment is difficult to reproduce them really perfectly.

　　The so-called capability distribution of high, medium and low frequency bands refers to the more or less amount of each frequency band within the frequency range that the equipment can emit. Some equipment has more high-frequency bands, some have stronger low-frequency senses, and some mid-range vocals are particularly full, but the volume of the high and low bands is not so much. In short, it is not enough, which forms the characteristics of all kinds of speakers in terms of confidence.

　　It should be noted that there is no absolute difference in the amount of each frequency band. The important thing is to achieve a balance after the overall matching, and no one frequency band is particularly prominent, which will be unbearable. As for the control power of each frequency band, it indicates the quality of "quality". Similarly, it is relatively difficult to obtain perfect low frequency control power. Many equipment may have a lot of low frequency volume, but the control power is not good. This kind of low frequency sounds at first glance. It is very "soft", but due to the lack of control, it will appear not strong, not full, not full of elasticity, overflowing with space, and it will be nauseating after listening to it for a long time. Of course, the better the sound , the control in each frequency band will be better, and there is often no loss of performance.

　　3. Sound field performance

　　The performance of the sound field is very important and can be said to be the primary condition for live reproduction. So what exactly is a sound field? The so-called sound field is the range in which the sound emitted by the two speakers can be condensed into a shape. Usually, if the placement of the two speakers is appropriate (including the distance from the rear wall and side wall, the height of the speakers and the angle of inward tilt, etc.) one The concretely shaped sound field will emerge. You can even "see" the size, position and shape of the various sounding instruments and vocals behind the speakers. This is the sound field!

　　If the speakers are not adjusted to the best position in the listening space, then you can only hear the sound, and cannot have the fun of "seeing through" the stereo sound field, let alone the realm of "live reproduction".

　　The performance of the sound field includes not only the height, depth and width, but also the relationship between the "objects" in the sound field, which is the clear relationship of distance, depth, front and rear, and height. Taking the singing of a choir as an example, it is not only possible to hear a single human voice, but also to be able to distinguish the level and distance between the actors in the front and rear rows, which is usually referred to as "level". It is not unreasonable that an audiophile with a "high rank" can "count" the number of "heads" in a high-quality chorus recording after carefully adjusting the positioning of the super audio equipment. Usually, the size and shape of the sound field will vary due to different recordings. When playing some software with an amazingly deep sound field, there will also be a feeling that the sound field is larger than the actual space.

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