The first important thing for us to listen to live performances is the appeal of musical performances. This should be the first goal of everyone's mind. I want to get the refreshing, inspiring, and rhythm of dancing with music in the current performance. Every composer, arranger, performer, and performer tries their best to make every show the best. Many times the emotional tension on the scene is indeed larger than in the album. Even the interaction with the performers, this is a very precious experience. This is also absolutely impossible to listen to at home.
The second is to look at, consider the performance of the instrument, acoustic performance, and so on.
There are two venues for performance venues: outdoor and indoor spaces.
Outdoor space is in principle the most natural and direct venue. Listening to music at such a venue, as long as the climate and environmental conditions, such as: temperature, humidity, wind speed is appropriate, everyone will hear the sound will be very good!
Then there is the indoor space. From the perspective of acoustic measurement, the acoustic level of the concert hall has a certain level, and some sound engineers have also said that the reverb time of the big performance hall of the concert hall is a little longer, so the sound that the audience feels is played. It will be a little more beautiful.
Different spaces have different shapes, internal configurations, and internal acoustic control design to create different sound properties; therefore, the same chamber orchestra and the same solo perform in different spaces, and will certainly show different sound effects, even musical instruments. The tone will also change.
The perception of space and performer interaction: people and space are alive!
Since the space has a great influence on the sound effects and the timbre, the performer or the orchestra conductor must change some playing styles in different performance venues to try to achieve the best sound in the space. In the case of solo, the performer will audition on the stage and play at the best position. The orchestra conductor must also adjust the musician's playing style, playing position, etc. according to the space.
This is why many people are willing to spend money to listen to live performances because there is always something that can't be heard on the record. With a little care, you will find that the configuration on the stage is different. Because of these changes, the music has become more interesting. In the same way, singers, guitarists, drummers, percussionists will have different changes in different spaces. The choir choir sings in a church with a poor acoustic environment and is sure to be moved by the church!
The impact of PA sound system Whether it is a large or small concert, its success or failure is not only for performers, but also for PA sound. From radio equipment, radio mode, balance adjustment of on-site mixer, on-the-spot response, use of software plug-in, speaker quality...etc. Did you notice that when we went to the live house and the show space to watch the show, some local PAs would pull the sound to the maximum, causing the scene to be noisy. For some people, this is very exciting and cool, but it is a physiological burden for the audience who want to enjoy the performance in addition to being cool. A performance, with a serious tinnitus to go home, this experience is believed to be many people. Ideally, whether in outdoor or indoor spaces, good PA sound processing must be set and adjusted according to the size of the venue, the maximum number of people possible, and the climate.
Then listen to the concert will have sweet spots? Actually, there are flaws! When you buy a ticket, you can see the clue. In addition to saying that the rock area is expensive because it can be close to the performer, you will find that the area of ​​the line that usually extends from the midpoint of a pair of PA speakers will be more expensive than other places. Of course, the farther and farther it is). If you can afford it, try to buy those areas, and the sound quality you get will be better. If it is a non-checking performance outside the house? Also follow this logic to stop positioning!
The figure below is a schematic diagram of the positional relationship between the on-site mixing console and the horn in a PA environment. A good listening area is about the area before the mixing console. This principle is similar to listening to two-channel speakers at home.
For the recognition of the sound of the instrument, this really needs an opportunity. How can I say that? Not everyone has the opportunity to hear the sound of a real instrument at close range, and not everyone has the opportunity to hear the sound of the instrument in an environment where the acoustic environment is dry. Nor does everyone have the opportunity to listen to the sound of an instrument in a sweet spot in a playing space. Most people recognize the sound of musical instruments through radio, television, CD, and online movies.
The biggest benefit of watching live performances is the ability to recognize the performance of real instruments. Musical instruments of different materials will have different tones depending on the type. Once you have the opportunity to get in touch, whether you hear it or play it, you won't forget it. This is your experience.
In the drum group, the interpretation of the drum kit heard on the record is a completely different experience from the drummer. When the body is struck by the strong energy of the drum, the ear is beaten by the crisp, sharp metal sound, the body follows the snare drum, and the tom-tom moves together to know that the record and the scene are two worlds.
(Dry and wet sound? Dry And Wet's usage is mostly used to describe the amount of sound effects. For example, if you speak in a place with a high degree of sound absorption, your voice is very direct, without any reverberation, we will describe this sound It is dry. Conversely, if we hear the sound that is heard in a condition that makes the sound reverberant, we will describe the sound as wet.)
Ok, there are so many nonsenses on the top. What is the relationship with listening to audio and listening to headphones?
We still have to say that most people are purely listening and don't care much about the details of these nitpicking, as long as they think it is good. Of course, there is nothing wrong with this.
When you are interested in this area and want to know more about it, you will start to ask questions and then find answers.
Solve for yourself. Listening to the record with audio equipment, in addition to listening to good music, the other is to expect to have a listening experience in person, I hope to release from the speaker, from the headphones to hear very fax sound. In the process of selecting equipment, these accumulated experiences can be used as a reference, and then the selected items and combinations are selected according to their preference for the sound.
When listening to the sound, you will try to find the best playback quality in the home space, from equipment combination, wire matching, power management, speaker placement to acoustic control, each link will affect the results you expect. The headset system is not as complicated as this.
Each brand has its own color, and none of them are "absolutely accurate." From the standpoint of "music playback", there is only "relative" and no "absolute". Just like the equipment you have five brands in front of you, you can choose which one you like and which one sounds more harmonious by listening to the experience accumulated by the real environment and the instrument, and the preference of the tone color. . After the adjustment of the remaining sound field, I will try to achieve it after returning home, starting from acoustic control, positioning, and reference to ITU standards. Headphones are usually limited by the type design of the headphones themselves and the quality of the speakers. So for us, we will not put the sound field in front, but the coordination, tone, texture and density... Put it in front.
In fact, if you say so much, I hope that everyone will have the opportunity to buy tickets to watch performances, buy more records to listen to, and enjoy music!
ECU Connector Section.
ECU-MEM-CONNECTOR is used to connect the ECU-MEM to the DIAG-LAYER. This part of ODX also links the ECU-MEM-objects with DIAG-COMMS e.g. used to read idents, download or upload the data. It allows an ECU to be flashed using ODX.
There are nearly 100 kinds of connectors used in general automobiles, and hundreds of connectors are used in a single vehicle model. With the increasing demand for automobile safety, environmental protection, comfort and intelligence, the application of automotive electronic products is increasing, which will make the number of Automotive Connector applications increase.
Four basic structural components of automobile connector
1. Contact
It is the core part of automobile connector to complete the electrical connection function. Generally, the contact pair is composed of positive contact and negative contact, and the electrical connection is completed by inserting the female and male contacts. The positive contact is a rigid part, and its shape is cylindrical (round pin), square cylinder (square pin) or flat (insert piece). The positive contact is generally made of brass and phosphor bronze.
The female contact, namely jack, is the key part of the contact pair. It relies on the elastic structure to produce elastic force due to elastic deformation when it is inserted with the pin, and forms a close contact with the positive contact to complete the connection. There are many kinds of Jack structures, such as cylinder type (split slot, shrink mouth), tuning fork type, cantilever beam type (longitudinal slot, 9-shaped), box type (square socket) and hyperboloid linear spring jack.
2. Shell
Also known as the shell, it is the cover of automobile connector, which provides mechanical protection for the built-in insulation mounting plate and pin, and provides the alignment of plug and socket when inserting, so as to fix the connector to the equipment.
3. Insulator
Insulator is also called automobile connector base or insert. Its function is to arrange the contact according to the required position and spacing, and to ensure the insulation performance between contacts and between contact and shell. Good insulation resistance, voltage resistance and machinability are the basic requirements for selecting insulating materials to be processed into insulators.
4. Annex
Accessories are divided into structural accessories and installation accessories. Structural accessories such as snap ring, locating key, locating pin, guide pin, connecting ring, cable clamp, sealing ring, sealing gasket, etc. Install accessories such as screws, nuts, screws, coils, etc. Most accessories have standard parts and general parts. It is these four basic structural components that enable the automotive connector to act as a bridge and operate stably.
Application characteristics of automotive connector
From the use purpose of the automobile connector, in order to ensure the better driving of the car, we can divide the reliability of the connector into the sealing property in use and the fireproof performance in the driving of the car. In addition, in the driving of the car, the connector can also show the shielding performance and temperature control performance. In general, when discussing the sealing property of automobile connector, the sealing performance of automobile connector is not only for water.
In this field, the current international management standard is IP67, which is also the highest level in the automotive closure industry. Although the waterproof requirements are different in different parts of the car, many automobile manufacturers will choose IP67 to ensure the airtight performance of their car connectors.
In the driving of the car, power supply is a very important energy source, not only related to the normal work of the engine, but also often involved in the use of power supply in the process of driving. Therefore, in the automotive power system, the automotive connector has different division, between the male connector and the equipment, between the male connector and the cable, between the male and female connector, and between the female connector and cable, there are certain sealing measures that can be implemented.
Sealing ring is a common tool in the sealing performance of automotive connector. This tool can not only achieve the effect of fixing between different hole positions, but also achieve the sealing effect. It can not only ensure the stable operation of automobile equipment, but also ensure the waterproof performance of automobile equipment in work. Most of the sealing rings are made of silicone rubber, which is made of liquid silicon and solid silicon after certain chemical changes.
Now the car is in use, electronic circuit technology is an important aspect of the automotive industry, not only in the driver's entertainment, but also in the driver's driving car control system, electronic circuit technology plays an important role in the stable work of the car. In order to ensure the stable work of electronic circuit technology, people have applied a lot of shielding technology in automobile production.
These shielding technologies not only play a protective role in the electronic circuit of the automobile, but also have the ability of anti-interference and anti radiation in the parts of the car. In addition, they can also play a protective role for the stable work of the automobile connector. These can be divided into two types of external shielding and internal shielding.
When using external shielding to protect automobile connector, two identical shielding shells are usually assembled together to form a shielding layer, and the length of the shielding layer can cover the whole length of the connector. On the shielding layer shell, there should be enough locking plate structure to ensure the reliable installation of the shielding layer. In addition, the shielding materials used should not only be treated by electroplating, but also be treated to prevent chemical corrosion.
The future trend of automotive connector
At present, the global automotive connector industry accounts for about 15% of the connector industry. In the future, it is expected to take a larger proportion under the drive of automotive electronic products. In terms of product cost structure, the average cost of connectors used in each car in China is only a few hundred yuan, compared with that of foreign countries
ECU Connector Section
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