Detailed explanation of professional audio troubleshooting tips --- interference failure

　　1. The power supply of the lighting system and the sound system are separated to avoid the interference of the lighting system to the sound system.

　　2. Do not use the ground wire of the power supply when the lighting and audio systems are grounded. Find a professional electrician to make two ground wires according to the standard of the lightning rod. One is for the lighting system, which can be connected to the light stand and the lighting console; the other is for the audio. The system adopts the star grounding method, and these measures can reduce the interference of the light to the sound to the lowest level.

　　3. Of course, in addition to the interference of the lighting system, the power supply of the audio system itself also has a slight interference problem. For example, the power pulse generated when switching the power switch may cause a slight pulse sound in the audio system. When I used to operate the mixer with headphones in the middle of the night, I heard radio broadcasts in the mixer a few times. Of course, these should be power disturbances.

　　1. Wireless microphone interference

　　Poor quality wireless microphones can interfere with the work of other wireless microphones. At the same time, wireless microphone signals are also easily interfered by other wireless signals. Therefore, when using wireless microphones, special attention should be paid to these interferences.

　　2. Cell phone signal interference

　　This kind of interference often occurs when the singer is singing with a wireless microphone. If the singer's mobile phone calls at this time, the mobile phone signal may interfere with the wireless microphone signal, resulting in a lot of noise in the sound system. Therefore, during the regular performance, the actor is Cell phones are not allowed.

　　3. Other interference

　　Others, such as walkie-talkies and other wireless communication equipment, radio broadcasting, various wireless receiving and transmitting systems, electromagnetic systems, etc., may interfere with the audio system.

　　Disc player interference

　　Some low-quality DVD or VCD players can easily interfere with the mixer through the signal line, resulting in serious noise in the mixer. In short, there are many kinds of interference failures in the audio system, and there are also various reasons for the failures. As long as it is an electronic device, there is no way to completely avoid this kind of interference, we can only try to avoid it.

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