On fever technique

You may not have any objections to the question that fever is a technology. Because it is originally through the means of technology to achieve the restoration of sound and artistic appreciation. In this case, first of all, we must consider how to reproduce the sound. Modern Hi-Fi audio technology believes that the ideal equipment should be a set of indifferent systems that are faithful to the original sound source, regardless of texture, sound field, dynamics, volume, sound range, etc., the playback must be restored to be consistent with the sound source , So that people who appreciate art can get the same sound effect as when recording. Therefore, the true Hi-Fi audio equipment and its working environment must be purely linear and distortion-free for the full range. Modern audio technology mainly includes: sound recording and editing technology, signal storage technology, signal conversion technology, amplification technology, control technology, architectural acoustics technology. Taking this as a basis for talking about fever, I think that for enthusiasts should include the following ways of fever:

Production and Motorcycle

As far as its development is concerned, it can be said that it has the longest history. Half a century ago, the sound technology marked by the comprehensive establishment of tube amplifier technology and electroacoustic theory has reached maturity, and many famous amplifiers have appeared. The concept of two-channel stereo has been proposed, and the 300B push horn speaker is popular. The cinema after World War II became a milestone of Hi-Fi at that time. In the late 1950s, due to the development of negative feedback technology, the distortion characteristics of the amplifier were further improved, and became the object followed by the design of electro-acoustic systems. Since the advent of transistors, amplifiers have almost brought about a "revolution", making Hi-Fi audio generally enter the homes of ordinary people. New design concepts and technical applications have emerged in endlessly. With the continuous improvement of transistor device manufacturing technology and digital technology Appeared, in the 1990s, Hi-Fi technology has completed the transformation from AAA to DAA, and has gradually developed toward DDA. With the development and improvement of amplifier technology, the entire set of electro-acoustic equipment has also made great progress. Speakers, speakers, wires, sound storage media, sound pickup devices, tuning equipment ... are becoming more and more perfect, and two-channel technology has developed The vocal tract makes the holographic stereo that was introduced in the 1970s gradually become a reality. It also shows a wider space for DIY and motorcycle.

Although audio technology is no longer mainstream in the development of electronic technology, some technologies have become "antiques", but due to people's pursuit of Hi-Fi, these technologies are still a wealth of wealth for enthusiasts to make motorcycles. As an audio expert said: "Why is this old antique technology still fascinating so many people today and not falling behind? I think there are two reasons that cannot be ignored, one is the constant new audio aesthetics The rise, it leads people to enjoy this ancient technology product from a new perspective; the second is that the function of this ancient technology product is not how high it can fly in the sky, or how fast the information is calculated, it is used to I appreciate music. Because of this, I believe that this ancient technology product will not fall behind in fifty years, "and" because it must have another new audio aesthetic every once in a while to keep it from Outdated, therefore, when designing, producing, and selling such audio products, cultural background and artistic taste become very important ... Anyone in any country who is engaged in the audio industry, will definitely put his knowledge of music It is expressed in the characteristics of the sound; it will certainly reflect his taste for art in the design of the shape. "

Some people say that using DIY and motorcycle to have a fever is an "engineer complex", which makes sense. Who didn't realize the ideals of their hearts for the works they designed and made, and were excited to achieve the goal of sound appreciation! From a technical point of view, it is also fundamentally different from the design and manufacture of products developed by manufacturers. DIY and motorcycles are a process for enthusiasts to implement their own audio concepts. After overcoming difficulties, their sense of accomplishment, purpose and The joy of gaining, etc. is unmatched. At the same time, due to the development of devices and materials, it also provides a stronger material foundation and supporting conditions for enthusiasts ’DIY and motorcycle ideas, so that they have more help in climbing the Hi-Fi peak.

Fever recording

Limited to China's national conditions, the "recording school" is the least common among Chinese audiophiles (at least my feeling is this). According to the development of Japanese enthusiasts, "recording school" enthusiasts will not appear until the level of fever in the whole society is quite high. From the late 1960s to the early 1970s, Japan ’s audio equipment manufacturing has entered the international level, which has promoted the formation of a fever fever in the society. The transistor has reduced the size of the recording and the cost of the equipment has been reduced. Organized recording activities such as "recording concert", "return to nature recording", listening, commenting and awarding of works have formed a group of enthusiasts of "recording school".

Recording enthusiasts have keen hearing, rich sound experience, and the ability to appreciate sound. They can better understand the impact of sound effects on human emotions, and they can better grasp the reproduction of sound effects. They are the real "golden ears" in the audiophile world. Some people are comparable to the techniques of sound engineers and sound engineers. Audiophiles are called "photographers" in the audiophile world. Their main interests are: 1. Experience the difference between live sound and recording playback, develop the ability to grasp sound phenomena, be faithful to the original sound, and make it artistic. Pay attention to the integration of sound, scene and personal emotion in the recording to pursue the personalization and rich feelings of the work, and achieve the interpretation of the sound through recording equipment and techniques. 2. Carry out exploration of recording skills and technical research, and gradually develop your own recording expertise to reflect the pursuit of sound effects. Many of them are not satisfied with the book and the existing recording technology, often in order to achieve a certain sound effect, do all the "magic tricks", and also have their own special understanding of the recording position, recording method, tuning method . 3. DIY or play motorcycle recording equipment to make your own special recording equipment. I have seen an 8-channel 4CH portable mixer made by Japanese recording enthusiasts in the Japanese magazine "Wireless & Experiment". Its design and production level is no less than any professional mixer today. 4. The recording montage is the main means by which audiophiles will eventually produce their works, as well as their expression of human-natural feelings and the concentrated expression of artistic ideals. Some add natural sound to music, some connect music pieces, some pursue the "colorization" of sound, and some even compose works with natural sounds, etc., which is simply not unusual. For example, some people use more than 100 recordings of stormy waves to create "sound and picture" works, and so on. 5. Use the recording as an expression of your own state, appreciate and communicate with the recording, collect the work of other recording enthusiasts, burn the good recording to the disc, conduct a comparative study of recording expression methods, and cultivate your own skills in recording Appreciation ability. 6. Writing experience and articles. Especially the recording experience and experience of some scenes blended, leaving a valuable wealth for the development of recording level.

Recording enthusiasts are a very high class in the fever world, both in terms of overall level and fever literacy. Their appearance will definitely contribute to the development of fever technology. At present, with the general improvement of China's fever level, the development of new recording methods such as MD and computer applications, the continuous improvement of audio equipment quality, the increase in people's income, the increase in leisure time and improved traffic conditions, has prepared conditions for the emergence of Chinese recording enthusiast . Although we have not yet participated in the "recording concert", natural recording, recording montage, etc. are still promising. how about it! Would you like to try the fun of recording enthusiasts?

Home Audio Engineering

It mainly includes three aspects: the design and decoration of the listening room, the configuration of audio equipment and the sound calibration technology.

The listening room is the working environment of audio equipment, and it is also a key link of how to achieve sound effects. Some audiophiles even think that its quality is the basis for whether the sound can be properly restored, and it is more important than the impact of amplifiers and speakers on the sound restoration. The sound processing of the home listening room is mainly to control the standing wave of the room, reduce the phenomenon of sound interference, obtain appropriate reverberation time and equalize the sound field. The properly treated family listening room should have a good performance on the frequency response of the sound, the reduction of the sound field, and the balance of sound pressure, so that people have a sense of presence, and they are unaware of living in a snail room. Compared with the concert hall, the living environment is much smaller in size, diverse in shape, and does not have a good architectural acoustic design. The standing waves are distributed at the audible threshold, which is easily interfered by the outdoor environment, and the decoration must meet the aesthetic requirements of the home. The conditions are harsh, and many of the processing technologies used in auditorium audio cannot be simply applied, thus creating conditions for enthusiasts to practice architectural acoustics. Although there are not many opportunities for the decoration of the listening room for one person, you can start from the living room and the warehouse gradually, sum up and exchange some experience in combination with the actual situation, learn more about some principles, and when the conditions are ripe, then start designing and designing special decoration Listening room.

The prosperity of the audio market, magazines and exhibitions has brought great convenience for audiophiles to access excellent audio equipment. Many audiophiles have a good reputation for the brand and performance of equipment in Europe, America, Japan and other countries. They know the sound effects and music produced by various equipments. The performance can be compared to the subtle differences. The configuration of audio equipment is already the "hot topic" most discussed by Chinese enthusiasts today. However, it is not something anyone can do to configure the equipment well. Using different equipment qualities to configure a system with a good sense of music is a highly skilled technology. It not only comes from familiarity with equipment, but also has good ears. More importantly, it is necessary to make good use of equipment. Artwork smell. If the equipment matching process is not good, even those high-end goods, when working together, the effect is often depressing; and many of the seemingly mediocre equipment, after proper matching, can still make a good voice, It depends on whether you know the goods. Of course, to do a good job in equipment configuration, you must also consider "silver two". Only when you are in line with your own economic conditions, it is most reasonable to choose a satisfactory configuration. So, how to achieve this goal? By appraising the effect of different equipment configurations, improving appreciation literacy, and continuously accumulating experience is the right way. It is difficult for those who hear stories, build cars behind closed doors, and blindly pursue famous brands.

In home audio engineering, tuning is a seemingly easy and difficult process. You must first establish a sound calibration standard according to your purpose, so that you can objectively evaluate the sound system's sound effects, starting with equipment adjustment and improving the acoustic characteristics of the listening environment, repeatedly adjusting patiently, summing up experience, improving control The equipment and the ability to overcome environmental defects gradually approach your ideal goal and create the sound effect you expect. There is a lot of knowledge that can be learned in sound calibration, and the placement of speakers and other equipment is very knowledgeable. The way to overcome the listening environment habit must also be continuously summarized in the adjustment, and even help your listening ability to improve. In short, if you pursue Hi -Fi perfect, school sound will always accompany you through the fever.

With the development of audio technology, electronic technology and digital technology, the equipment we use today is designed, manufactured and developed following Hi-Fi's ideas. Therefore, the fever equipment takes the pursuit of Hi-Fi as the only standard and its soul, even for the production of sound control equipment, and it must be functionalized on the premise of ensuring Hi-Fi. Today, the frequency response of the amplifier can reach 100kHz at the high end (the low-noise broadband amplifier has reached DC-2MHz), the total distortion has reached less than 0.1%, and the linearity, transient, signal-to-noise ratio and other indicators are close to Hi-Fi's General requirements, and develop to the direction of personalization under the influence of Hi-End thought; A / D, D / A signal conversion can achieve almost any precision in technology; 32CH multi-channel digital recording basically realizes the full sound field Information control and original sound recording; ultra-large amount of optical information storage technology can achieve more precise lossless storage and extraction of sound information; sound control technology development is more colorful, using DSP and other technologies, can change the sound signal according to needs The strength, phase, harmonic components, frequency response, transient performance, etc., provide great convenience for processing sound effects; through the cooperation of architectural acoustic technology and multi-channel playback technology, it also does not restore the sound field in a restricted room. There are still problems that are difficult to solve. It is no exaggeration to say that using existing technology has been able to recreate the original sound according to their own needs (such as some DJs) The production of sound effects, some audiophiles' personalized matching and adjustment of the sound system), thus promoting the development of sound in the direction of art. Although the current technical level still needs to be improved, there are still speakers that have been developing slowly so far, and have not solved the problems.

Similar to photography, sound reproduction of sound is achieved in a passive way, which is more restrictive to artistic creation. Moreover, due to economic and other conditions, most domestic audiophiles have limited equipment (almost all of them have only one set of equipment). It is rarely possible to match different equipment in listening appreciation. The scope of aesthetic realization is narrow, so they are mainly concerned about The only problem is the realization of sound reproduction by signal conversion technology, amplification technology, etc., from the perspective of pure technology to understand sound. Especially influenced by some traditional ideas of Hi-Fi, many audiophiles now do not think that audio can be used as a means of artistic creation, but as a tool to reproduce sound. It should be said that this situation is still at a relatively preliminary stage in terms of comprehensive understanding of the technical nature of audio compared with foreign countries.

People who insist on "sound is the uniqueness of technology" believe that only when the sound is the only technology can the purity of Hi-Fi concept be guaranteed. However, this idea was idealistic from the beginning! As long as the technology remains intact in the presence of non-linearities in the sound system, it cannot be achieved. Therefore, this view was severely challenged. First, there is no pure linear amplifier in circuit theory, and the audio circuit is not the mainstream of the development of electronic technology, and it is difficult to have a big breakthrough; second, since the emergence of the Hi-End idea, the development of audio systems has been personalized. In order to meet the realization of people's aesthetic concept in using audio; third, as society becomes more secular and commercialized, people also put forward diverse requirements for the use of audio for sound appreciation. If this situation continues, Hi-Fi's idea of ​​"true" as the only evaluation standard for audio will be disintegrated. This is also the case, although the efforts to pursue the true reproduction of sound will continue, but more people will turn their eyes to satisfy the psychological experience of listening to the sound, making the sound reproduction of the sound more artistic and more in line with their aesthetic realization The goal is to maximize the utility and efficiency of audio technology, and ultimately exceed the use of simple tools.

From a technical point of view, does the restoration of sound by sound only reflect the original nature of sound? In fact, the sound also contains its own performance on the sound, the so-called "British sound", "American sound" ...... It is also created using this nature, and no one thinks it is not in line with Hi-Fi, but real There is only one kind of voice. Therefore, everyone has compromised on the sound of "only true" and "beautiful". There is only the problem of psychological acceptance or non-acceptance. Many stereos made in Japan and some monitors are very "true", but they don't like it. They think that there is a lack of cultural atmosphere, especially Japanese stereos are said to have no "music taste" and they can't listen at all. As far as technology is concerned, I believe that it is not difficult for Japanese people to make audio with "Japanese sound", but will the market accept it? How many people can accept it? Today, the mainstream of music is European and American music. Even if it is to be nationalized, considering the factors introduced to the world, it must also contain European and American elements. Imagine if the Japanese penetrated their aesthetics into audio manufacturing, would such audio still want to be sold all over the world! Then take the road of "truth", at least this is a complete manifestation of Hi-Fi, but this is difficult to do on low-end products, and it has caused everyone's condemnation. Let's talk about "Chinese Voice", although it also makes people dream, from the market, are manufacturers willing to do it? Enthusiasts do n’t necessarily say that the United Kingdom, the United States.

For audiophiles, using existing equipment to match machines is now the same technology as DIY. This is because of the diversified development of audio equipment. If all the audio is "true", then we will lose the opportunity to appreciate the diverse sound effects. In some foreign enthusiasts, they often have more than one set of equipment, so they can achieve the expression and selection of sound through a variety of equipment matching, determine the appreciation target according to different sound characteristics, and make the sound image and meaning according to their own The ideal is fully expressed and meets your own aesthetic needs. There are even some people who have given up their listening attitudes based on "truth", thinking that appreciation must please me and should be what I need. Introduce some of the sound control equipment into the listening and appreciation of the sound, and use the methods of changing the timbre, frequency response, sound field, time, etc. of the sound to achieve the purpose of appreciation. Of course, in order to ensure the appreciation of the original sound, they are still " "Really" left a place. This reminds me of why the Spanish surrealist painter Dali wanted to change the Mona Lisa to round eyes in the copy of "Mona Lisa", and add a mustache upward. This is actually an expression of using perfection to express oneself. This may be unacceptable for Chinese people who have long been accustomed to figurative appreciation, as reflected in the appreciation of audio.

In addition, the development of computer technology will also create a new technical approach to the sound expression of audio, thereby enriching the aesthetics of audio. How will Hi-Fi develop in the future? Will Hi-Fi be reflected only from a technical perspective, or will it be maintained as an aesthetic standard? We have to wait and see.

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