The mixer plays a central role in many sound systems. It can create stereo, beautify the sound, suppress noise, and control the volume. It is an indispensable machine for sound art processing. After the mixer shifted from analog to digital, the digital mixer became the most important mixer equipment now. We know that the main feature of a digital mixer is that after the analog signal enters the mixer, it first performs analog-to-digital conversion to convert the signal into a digital stream, and the mixer performs digital operations inside the mixer. Therefore, before the signal comes out of the mixer, there is no concept of simulation. Once a crash occurs and the processor crashes, normal output cannot be guaranteed. Let's talk about the reasons and solutions of the mixer crash today.
1. External reasons
If the external environment of the mixer is not good, it may crash the mixer. First, eliminate the power factor. Connect the power supply of the mixer. If other high-power electrical appliances are usually connected, a large voltage transient will be generated when the electrical appliances are started. The voltage of the power supply terminal of the mixer is instantly reduced. The transformer of the mixer itself has a limited ability to adjust this voltage change. Once it exceeds the allowable limit, the machine usually strikes; if it does not strike, abnormal voltage changes may also bring noise into the system. In addition, in some areas, due to the increase in electricity load, especially in summer, the voltage may be sufficient during the day. At night, when the electricity load increases, the mains voltage at night will drop more. For digital mixers, If the transformer cannot cope with this change, it may crash.
Secondly, static electricity is also a big hidden danger. The climate in the south is relatively humid. Due to the relatively high humidity of the air, it is difficult for the human body and the surface of objects to accumulate a large amount of charge. This is not the case in the north. The air is relatively dry, and people wear clothes of different materials, which often accumulate different electric charges. In the space where the mixing console is installed, in order to control the reflection of sound, carpets are often laid on the ground, but the carpet itself is not good for the conduction of electric charges. This is more obvious in the relatively dry autumn and winter seasons. As soon as the operator's hand "closely touched" the surface of the mixer, it began to "overcharge". This instantaneous current can generate tens of thousands of volts. When this voltage hits the circuit, some devices will exceed the load limit, so a crash occurs. Therefore, the charge in the room is removed as soon as possible. Lay relatively better conductive carpets and ground the mixer. Operators should wear less clothes that are prone to static electricity, and do a good job of draining the charge.
Dust is definitely a killer for digital mixers. Many musicians have the habit of smoking and often smoke next to the equipment. This will cause a large amount of smoke and dust to enter the inside of the machine and accumulate at various contact points and surfaces, which is easy to generate electric charges and poor contact of the potentiometer. When we open the cover of the digital machine, we can judge by naked eyes whether there is dust accumulation. When installing the dust removal device, you can use a powerful electric hair dryer to remove the dust on the surface. If necessary, you can use a precision instrument cleaner to spray on the location that needs to be cleaned. After the volatilization is complete, you can power on the test. The handling of this situation is effective for a mixer that has been used for a long time and lacks maintenance all the year round.
2. Internal reasons
Digital mixers of different sizes have different processing capabilities for a large number of states, parameters, and data. For large-scale project processing files, or files with a long time length and large automatic memory usage, it will cause slow response or even crash. In this case, it is necessary to disperse the project files as much as possible. For example, a 60-minute complex project file can be saved as a file every 20 minutes, and 3 files are used to record the entire work, which greatly reduces the risk of crashes. Digital mixers are similar to computers. The crashes of the mixer are usually restarted. In 80% of the cases, the symptoms can disappear, but this is a cure for the symptoms rather than the root cause. The mixer sometimes freezes when performing operations in a certain state (recording digital mixer), and the reason is not easy to find. Fortunately, any digital mixer has an important storage state-factory settings, marked as Default Setting. These parameters can be called to restore the mixer to its initial state, so that the crash can basically disappear.
The digital mixer also has its own operating system and runs its own software in the system. Defects in some hardware drivers may also be the root cause of the crash. Generally, manufacturers will provide free upgrade services for the hardware and operating system of their digital mixers. When upgrading, they need a computer connected to the network to assist. The general equipment will feedback a lot of information during the user's use. The manufacturer solves the problem based on this information and modifies and improves the software, so that the software and hardware are improved. It should be noted that due to the risks in the upgrade process, please protect your data before the upgrade, and pay special attention to the fact that the power must not be cut off during the upgrade process, otherwise it will cause irreparable losses. If you are not sure, you should consult professional and technical personnel.
For digital mixers, the larger the mixer, the higher the degree of separation between the control part and the signal processing part. When dealing with crashes, it is more necessary for our technicians to increase the judging process. A comprehensive analysis of the cause of the crash can solve the problem better. With the development of computer technology today, the occurrence of many phenomena cannot be connected with traditional audio technology, which is a challenge for radio station users. Most word mixers have a self-checking program. After turning on the device, the device will check its own state. If there is a problem, it will prompt it and provide an error number. If there is a maintenance manual, it will be easy to find the cause, and prescribe the right medicine for the problem. Solved easily.
Another good way is to pay attention to the forums created by digital mixer manufacturers for their products. Many people from different countries around the world will help you and provide you with valuable information. If the mixer is not very good at finding the cause of the crash due to aging, then please consult an experienced expert to solve the problem as soon as possible.
Through the above methods, I think most of the crashes of the word mixer can be solved. Due to the characteristics of digital equipment, there will be countless possibilities in use. After you understand the working principle and method of digital mixer, you can better solve the problems you encounter.
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