The solution of communication sounds when the KTV audio device is installed and connected

　　1. The shell of a reasonable grounding audio device is usually shielded with the power transformer of the device. This device shell also has a "ground". This "ground" is also different from the other two "ground". When the "ground" comparison of the earth is disturbed, the "ground" of the device shell can decrease the sound of communication, otherwise it should not be connected.

　　2. In the case where the power supply disturb is very serious, the device is connected to connect the audio equipment and monitoring equipment of the small signal together. The power amplifier can decrease the communication noise disturbance from the power supply.

　　3. There is no DC circuit connection between the two sound equipment.

　　4. The transmission method of the long -distance transmission signal is transmitted by a balanced or balanced transformer. The short distance can be unbalanced. The transmission method of a balanced transformer usually has a balanced transformer on both ends. The shielding layer is grounded at the end of the shielding layer, and it can also be suspended. Grounding can play a shielding effect, and it can also prevent equipment leakage from electrical shock. When not ground, the two ends of the balance transformer can have an insulation resistance effect. The balance transformer base is grounded to leak static electricity.

　　5. Weak signal equipment Power supply and strong signal equipment Power sources connected to weak signal source equipment such as CD, card seat, effector, mixer, compressed amplifier and equalizer, etc. The connection between the power supply can prevent the power communication of the power supply of the conduction method.

　　6. The use of suspended grounding means that the potential is the same as the ground, as a zero potential. But the point is not directly connected to the ground. It is the point where the sound level of the audio equipment circuit is zero. There are impedance between this "ground" and actual ground, and it is high impedance, which can overcome the mirror disturbance.

　　7. Different system connections must adopt a balanced blocking transformer connection with the connection between the audio system and the TV broadcast vehicle audio system; the connection between the system and the large electronic display; or the connection with the electronic computer, etc., is usually connected with a balanced blocking transformer. Different systems are the easiest to cause disturbance of communication noise.

　　8. Different from the signal ground line between the two "ground" potentials differently to prevent the device from directly connecting or forming the ground circuit. Such as the balanced external shielding line is only ground at one end, or both ends do not ground.

　　9. The use of suspended grounding means that the potential is the same as the ground, as a zero potential. But the point is not directly connected to the ground. It is the point where the sound level of the audio equipment circuit is zero. There are impedance between this "ground" and actual ground, and it is high impedance, which can overcome the mirror disturbance.

　　10. When the clean power supply power supply and power supply power supply is designed, the power transformer should be designed alone; when the unconditional set of power supply can be used to power the power, the power supply is separated from the air conditioner, lighting and other equipment; Essence

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