How to make the sound "sing" better?

The proper volume is necessary to ensure the hum

In fact, whether it is humming or not is closely related to whether the operation is correct or not. Many friends listen to music at the same volume, regardless of what music they listen to. They think that when the recordings are released, they naturally snoring. What’s more, they think that loud is a squeak, so whether you listen to the symphony or a single instrument, use the same The volume went to listen, and the result was that Deng Lijun’s voice was like Hong Zhong, and the petite body became Zhang Ba King Kong. The violin is enough to rival the cello. The guitar’s treble is like a grand piano, and the bass is like a drum. When you are frowning and boring, they are proud of the above sounds, telling you how dynamic his system is, how singer is enough, how much recording details... Wait a minute, sometimes I don’t know how to tell him.

Why are these friends going to listen to music like this? This is purely because they rarely listen to real concerts, I mean orthodox live concerts, like the large orchestral performances of the two halls. When you hear the symphony orchestra playing in the same concert hall, and the volume of the single instrument and the sound of the real instrument, they can understand what is called the ratio, in order to truly understand the volume loudness of a single instrument playing sound. . In addition to listening to live music, another way to get the most out of the sound and volume of the instrument is to listen to some live performances without a megaphone system, or simply buy a musical instrument and come back "hands-on", then when you go to listen to the canned music of the CD When you do not adjust the volume without any rules, not only the sound is distorted, the instrument is deformed, and the ear is sinned. After a long time, the hearing may be damaged! The highest level of volume control and the best performance of the equipment, of course, can be the volume of the orchestra, single instrument or real person singing, the original performance! This is the 1:1 volume that some Hi-Fi friends pursue, which is the same proportion of volume and the same size stereo sound field. They hope to move the entire symphony orchestra home for live performance! Therefore, I often go to the two halls to listen to the live musicians. Their control of the overall volume is always better than the few geeks who listen to live performances. If you have a string of strings, a pipe, or a keyboard, you may use them to adjust the volume and adjust the volume so that the instrument played by the listening sound is similar to the actual instrument. Your sound can be called Hi-Fi.

Volume control is an art, and the volume is large enough to affect the sound of the entire system. Why is the sound not good? There are a lot of reasons for this problem. It is because there are too many. If you can't even figure it out, I think it's even harder for others to find out why. The reason why the sound is not good is probably because the quality of the equipment bought is not as good as you want, so it is not good to listen to; it may be mismatched, so it is not good to listen; of course, it is more likely that the speaker is not in the right position, so it is not good. In short, it is absolutely true that it is not good to listen to, and it must have its unpleasant factors. Here, I want to open the other, just mention that two ordinary people are easy to ignore, and will not consider carefully. Perhaps, the reason why the audio is not good is that it is so simple, it is clearly in front of you, but you ignore the sound when you listen to the sound every day, and desperately go to the horns. What are these two reasons? In fact, it is a big reason, that is, "Is your volume too loud?" For this big reason, it will turn into two small reasons: the speaker can't load too much volume; the space can't load too much. The volume.

The volume is too loud to know. Most people have a misunderstanding, thinking that as long as it is an audio equipment, how much louder it is, how loud the sound equipment should be able to sing well. In fact, audio equipment has its own limits when it comes to maximum sound and minimum sound. In terms of electronics, the amplifier should be a signal that is obtained by the sound source and amplified without distortion. A horn is an audible sound that converts an audio electric power signal in the audible range through a transducer (speaker unit) to a sound pressure level. In order to properly select a good speaker, you must first understand the properties of the sound signal, and then ask the speaker to restore the audio electrical signal to a realistic and natural sound "as is". So properly adjust the volume so that the music played is mostly undistorted, which is a necessary condition for you to hear the buzz. So the correct volume adjustment is very important. It is definitely not a lot of whispers. Why can't the volume be too loud? There are two reasons for this: First, the amplifier and the speaker may not have been so loud, and the distortion is serious, that is, the input signal we are cutting is cut; the second is that the listening space cannot withstand so loud. It is easy to understand the distortion of the machine. It is because it is not powerful enough, but it has to use up the power of feeding, and of course it is there. As for the speakers, this is the point I want to talk about. Usually the power (or volume) that each speaker unit can withstand has its limitations. If it is within its capabilities, it can produce very low distortion, very pleasant sound. However, once the volume exceeds its own load, it will produce severe distortion. When the speaker unit is distorted, the sound produced will be harsh.

The speaker has a distortion limit and cannot be turned too loud. Here are a few examples to prove: First, if you feel the sound is ugly, turn the volume down, usually it is no longer difficult to listen to; second, the general mini bedside sound , if you listen at a certain volume, I often find that it is better than my own big set of audio ! Of course, after opening a loud voice, it is completely out of shape; thirdly, if your car is soundproof, it is often good when you listen to music at a moderate volume in the car. From the examples available in the above daily life, the importance of "appropriate volume" can be fully verified. Unfortunately, the average person tends to overestimate the combination of their own audio groups, thinking that the small speakers bought at such a high price, say what can also be issued a very large volume. In fact, no matter how much you spend to buy a speaker, a small speaker is a small speaker, and the volume it can emit has its limitations. Even if your speaker unit is better than normal, it only adds a little bit of volume.

Use the tenor and violin to try the volume. How do you use the speakers correctly so that they emit the correct volume without distortion? It's very simple, just listen to it with your ears. Here I propose two kinds of sounds to test, one is vocal and the other is the sound of a violin. Let's talk about vocals first. Vocals are the most difficult instruments to perform. They are also the biggest test of the general speaker unit, especially the tenor and soprano. Please take a tenor record to listen to (preferably Pavallo, his voice is the most devastating), can only turn the volume to the tenor and sing it to a strong place, it sounds not "difficult" "The place is up." If you start to feel uncomfortable, it will already exceed the load of the speaker. How loud is the volume of the line that makes the speaker unpleasant? I don't know, some speakers can sing louder, others can only sing a little. At the end of the day, you may suddenly find out how my speakers can only sing so whispered? It’s hard to hear louder. Don't doubt that the speaker unit is not superhuman, it can't drive without distortion without distortion. How serious is the distortion of the speaker unit when it exceeds the load? If it weren't for an engineer, we might not know it because the speaker's narrative never lists the speaker's distortion numbers. It is because the distortion is very low, so even if the distortion number is listed, everyone will not pay attention to it. After the vocal test, come back and try with the violin. You don't have to use a concerto. Just use a violin sonata. Only a violin and a piano can be heard clearly. It should be noted that when the sound of the violin starts to be tight, scratched, and sharp, there is a limit. At this time, the volume should be lowered a little until the violin sound does not sound tight, and the sweet piano sound can Until it appears, there is the most appropriate volume.

To have a huge volume, you must have a large unit group. Maybe you will be disappointed when you adjust the volume according to the essentials, because the small volume does not satisfy your hearing. Yes, the reality is very cruel, otherwise why there are multi-unit four-piece large speakers, large-caliber units. Speaker design engineers know the limits of the speaker unit, so in order to present a large volume without distortion, they must use dozens of small units or a small number of large-diameter units, so that each unit emits only the most appropriate volume. . Think about it, the easy and natural sound of dozens of undistorted units, the tuned to a high-pitched mid-woofer unit with a small speaker! But then again, the overall sound of the big speakers should be able to be expressed. It needs to be heard in the larger listening room at the appropriate volume, and we are in the cosmopolitan city, the general living room. Most of the seven, eight ping, in this small space, I want to put a large speaker, it is better to put a pair of bookshelf speakers is more practical, because the small small speakers in the space show the sound is blurry and no detail dynamic, the volume is too big and afraid Noisy neighbors, so we can only rethink how to make the bookshelf speakers sound the best. Therefore, no matter what speaker you use, know the limit of your own speaker, and control its volume to the most appropriate situation, this is the biggest secret to make your sound sound not difficult to hear. Have you found out that listening to the sound at night is especially good? In addition to the possible reasons for sufficient power supply, the reduction of external noise makes the volume relatively small (already enough) is probably one of the important factors.

Listening to the space does not load too much volume. Listening to the space is not a speaker or an amplifier. How can there be a load problem? Of course! It is also a problem that most people can easily ignore. In fact, the volume load of the listening space is the sound reflection load of the six walls in the space. In North America, most of the rooms are separated by planks and plasterboard, and there is a sandwich between the panels. This is a standard soft-tuning space. A space like this can absorb a lot of sound energy, that is to say, its sound load is large. Whether in the high, medium or low frequency range, such space can be absorbed. In contrast, Taiwan's listening space is a six-walled wall of brick or cement grout. The sound energy absorbed by such a hard wall can't be compared with soft-toned space. One is absorption, the other is mostly reflection; the absorption of soft-tuning space may sometimes make the low-frequency sense insufficient, but most of them can make the high-frequency sound good; while the low-frequency of the hard-tuned space will not escape (and will increase) But it is also very easy because the high frequency reflection is too strong and harsh. Weighing the gains and losses, I tend to have soft-tuning space for the audio fans, because such a space is relatively burdensome on the volume, and it will not make you feel loud and noisy.

How to use the horn to position the triangle is very easy to use. If you don't want to change the space of the hard tone, is there a way to solve the problem that the reflection sound in the space is too strong and the space cannot be loaded? Have! The first and simplest method that doesn't have to be a brainstorm is to reduce the volume. This method doesn't have to be described any more. The second method is to use the "equal triangle placement method" in the speaker "position eight method" (some spaces may also become "long side swing" plus "positive triangle position"). Why use an equiangular triangle? The biggest key is that this kind of pendulum conditional speaker is far away from the four walls. When the speaker is far away from the wall, the reflected sound will be weaker, so that the messy sounds heard will be heard. Will reduce, the ear can be quiet.

Don't neglect the magical effect of adding long-side pendulum. In fact, the equilateral triangle placement method is the placement method that minimizes the interference of spatial factors. You can move the entire equilateral triangle (two speakers and people) in the room and slowly find the best position for the equilateral triangle. Perhaps you will be wondering why I added in the previous paragraph "Some spaces may have to be long-side and plus-triangular". This is for some spaces where the two side walls are too reflective or the distance between the two side walls is very narrow. In such a space, the reflected sound from the two side walls seriously interferes with the direct sound. At this point, you can try to place the speaker on the long side, so that the two speakers are farther away from the side wall, and the reflected sound from the two side walls is reduced. Please don't stick to the speaker. It must be placed in the traditional short-side position. When you don't get a good sound with the "Three-Seven Ratio Method" or the "Three-Three-Seven Proportional Method", please open your imagination and use other Try the "speaker placement eight methods". After you have tried it, you may get unexpected results.

How can it be as good as turning down the volume? If so, does the audio store still have business? If you don't believe it, please follow my method and lower the volume to the appropriate position. After two or three days, I will go back and reread this article. However, after the volume is lowered, there is usually a problem that may follow, which is the lack of low frequency. How to solve the problem of low frequency? In fact, it is very simple, just add a little low frequency just fine! It’s really easy to say it, how do you add it? There are hundreds of ways to add low frequencies, and each master may have their own method. If you are not a master, I think the easiest way is to add a subwoofer. Please don't think that adding a subwoofer is to listen to the deafening low frequency. The place where the subwoofer really serves us is "add a little bit just right". Please note that I mean "a little bit".

Audio is pursuing high-fidelity. In order to achieve high-fidelity, enthusiasts use power-consuming amplifiers, and more and more advanced audio sources and speakers. All this is nothing but an attempt to faithfully restore the original sound, but in practice it often does. Not enough. If the music played is exactly the same as the original sound, then there is a device with personality. In fact, the personality of the room is even more strange. The equipment that is well heard in a friend's house is changed to the taste of the home. The reason is that the standing wave, the reverberation, and the reflected sound are different, except that the sound pressure can be adjusted to be consistent. The speaker's moving position, other transformations are difficult for most people, which has two reasons for knowledge and implementation. For the actual listening environment, what is needed is the sound field, not a single sound mix.

How to create a good sounding place <br> Only in a quiet environment, the details of the music can be heard in order to be touching. The occasion of chaos is just about stimulating. The volume of the sound must be sufficient to be exciting and emotional. The sound comes from the front, and there is a feeling of face-to-face communication. Behind the multi-channel of audio and video is the effect of adding fun. To hear the vivid and beautiful sound, you can't dry up and dry; there is no noise and noise, and the whole sound field is even and stable. Want to hear the above buzz, the room in the listening room must meet three conditions:

(1) Good sound insulation

Why put the sound insulation on the first point for two reasons. First, block other noises that impede the performance of the sound. When the concert hall is played, the doors and windows are closed, and the sound absorption and sealing performance of the doors and windows itself are very good, so that the sound outside is prevented from coming in. Second, in order to achieve the same volume as the original sound. If the outside sound comes in, you must amplify the faint sound of the sound reproduction, then the volume of the original sound is not the same, the meditation or insect sound of the music performance will be greatly exaggerated. If the sound insulation is not good, the use at home is often afraid that the sound is too loud to spread out to disturb the neighbors, and only the volume can be reduced. At this time, the agitation emotion and the dynamic music effect are compromised. It is difficult to achieve the minimum conditions equivalent to the original sound without separating the internal and external sounds.

(2) Moderate reverberation
The so-called moderate reverberation refers to the period of time from the occurrence of the sound to the disappearance, not too long and not too short. A room with a short reverberation time is called a dead room; a room with a long reverberation time is called a living room. The words "death and live" are directly translated from the English expression. The original words are very abstract and may be translated literally. Generally speaking, the rooms are more empty, have more sound-absorbing ceilings and many windows, and the sounds heard are dry, not round, and the music lacks fun, which is the result of the "dead" room; in the bathroom, warehouse and Caves and other places, hard or micro-porous walls, no other sound-absorbing materials, the sound continues, the reverberation time is very long, the sound "live" overdone. Before the second sound came out, the first sound had not disappeared, the music was completely out of shape, and the original taste could not be preserved. The so-called proper reverberation needs to be achieved: the tone is round, the sound in front is clear, and even if the volume is small, there is a proper reverb volume, and the sound will not be absorbed at the beginning. Room reverberation requirements for different sizes and different uses are different. Generally speaking, the lower the frequency, the shorter the reverberation time requirement. In fact, the reverberation time of a good listening room bass is shorter than that of a high-pitched sound, that is, it has a strong sound absorption for the bass. Enhance the sound absorption of the bass, wood is a good material to absorb the bass.

(3) Eliminating standing waves, parallel faces, reflections, and acoustic focusing

In the general listening room, pay special attention to the position when the position is placed. The listening sound is closer to the sound source. At this time, the direct sound is stronger than the reflected sound, and the frequency response will be flat. Many rooms are not very large in size. Speakers and listening sofas are often placed on the walls on both sides. It is difficult to make the above requirements. At this time, the sound absorbing ability of the wall should be made stronger or the shape is uneven. It is also beneficial to weaken the influence of standing waves. The size of the room is large, and the standing wave frequency will decrease proportionally, dropping below tens of Hz, and the impact on the sense of hearing will be small. There is also the ratio of the length, width and height of the house, which is not necessarily an integer multiple. Strengthening bass sound absorption is also beneficial to weaken the influence of standing waves.

For a specific standing wave frequency in the room, a resonance speaker can be used to absorb these frequencies. This method is more professional, according to the actual measured room standing wave frequency, design a special size of the resonance speaker to absorb these frequencies. The space formed by the perforated plate and the rear keel during the decoration of the house is also a resonance sound absorbing body, which is effective for absorbing a specific frequency.

Parallel surface reflection refers to the back and forth reflection of sound between two rigid parallel planes. The distance between the two parallel faces is smaller than the scale of the parallel faces themselves, the sound can't be absorbed, and it can't spread out, and eventually the harmful sound like the bird flapping the wings will be produced. Obviously, there will not be a lot of occasions when you take a shot and take a shot. At that time, you must have a strong sound. In general, the consequence of this echo is that the sound is distorted and the outline of the sound becomes blurred. It is difficult to improve the harmful sounds, so it is necessary to pay attention to the construction and selection of the listening room to avoid this structure.

If the listening room has a parabolic ceiling or a curved wall, it is possible to produce an acoustic focus. In the area of ​​focus, the sound is strengthened, the other places are weak, and the entire sound field becomes uneven. In general family places, this situation does not occur, but when using small public places for sound playback, this situation needs to be avoided. Otherwise, the listening studio is beautifully arranged, but the listeners in different locations hear different sound results.

In short, it is best not to be too empty to listen to the place. The biggest problem in this space is that the reverberation time is too long, making the music not only too noisy, but also confusing. You can place a little more furniture in the place where you listen, which helps the absorption and spread of sound waves. For example, the sofa can buy cloth or leather sofas, and their surface and weight have good sound absorption effect; All kinds of cabinets, such as record cabinets and bookcases, sundries cabinets, etc., these cabinets also have the function of absorbing and diffusing sound waves. In addition, a thick carpet or wooden coffee table can be placed on the floor (preferably not glass, because the smooth surface of the glass reflects the sound waves). In addition to the above objects, some paintings or raised shapes can be hung on the walls. These items also contribute to the absorption and spread of sound waves.

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