1, loud noise.It affects the clarity, softness and brightness of the sound. In severe cases, it will cover the sound in the venue. Background noise will occur due to excessive gain, automatic gain control mode and impedance mismatch.2, the end of the voice noise.The principle is that the sound of the speaker is fed into the microphone, so that a positive feedback circuit is formed between the speaker and the microphone, which is mainly caused by the unreasonable placement of the microphone and the speaker in the conference room layout.Our products can be widely used in Scenic spot, museums, companies , factories, government agencies and technology center. The bluetooth transmitter and receiver passed ISO9001:2000 ,CE and Rohs .The team bluetooth transmitter and receiver is suitable for the group travel, company visit.
3. Imbalance of voice.If the sound proportion among the general control room, the main meeting room and the sub-meeting room of speech is out of balance, it will affect the balance degree of restoring the remote sound in other sub-meeting rooms and cause the overall effect of the meeting to decline.
4. Light interference.If the venue USES the ballast mode to start the lights intermittently, the lamp tube will generate high-frequency radiation when excited, and through the microphone and its lead string into, there will be a "da-da" sound;If the microphone line is too close to the light line, there will be a "squeak" sound.
5. Power supply interference.Poor grounding of power supply, poor ground wire contact between equipment and impedance mismatch, and power supply of equipment without "purification" treatment will generate clutter interference to audio signal, forming low-frequency ac "buzz" sound.
The speaker can speak by transmitter , the visitor can listen can receiver. It providing high-quality tour services, it overcomes the noise pollution and confusion caused by the previous use of loudspeakers and visits a clear, quiet and comfortable environment.
Yingmi bluetooth transmitter and receiver , Make The Audio More Wonderful. Welcome to visit our company.