source:Industry News release time:2022-06-10 Hits: Popular:Brand bar audio wholesale
In the last issue, we talked about one or two points about the signal quality and distance of wireless microphones. Now we send it to discuss that the signal quality of wireless microphones directly affects the transmission distance. The signal quality (S/N) is closely related to the transmit power, the distribution of the spatial field strength, the quality of the receiver, the efficiency of the transceiver antenna and the situation of external interference sources.
(3) Transmitting power of wireless microphone
Increasing the transmit power can increase the transmission distance of the wireless microphone. However, the transmission power of wireless microphones is limited by the influence of radio waves on the human body, the pressure life of the power supply battery and the interference to adjacent equipment. The transmission power of commercially available products is limited to 2mW to 50mW. Due to the technical reasons of the device, the transmission power of the VHF frequency band is easier to make than the transmission power of the UHF frequency band, and the price is also cheaper.
(4) Measures to solve the fluctuation of electromagnetic wave field strength
Due to the reflection and absorption of indoor objects, the multi-path propagation of electromagnetic waves and other factors, the field strength of space electromagnetic waves is very complicated. When the distance between the transmitter and the receiving antenna changes frequently, the field strength of this fluctuation also changes. When the receiving antenna is in a weak field strength position, a "mute" point or poor sound quality occurs. To this end, the use of dual-antenna diversity reception technology (Diversity) and AGC automatic gain control technology in the wireless microphone receiver make up for it. The diversity receiving technology is to set two sets of the same receiving antennas and two receiving devices in the receiver, and automatically detect and automatically select the stronger one received signal as the current received signal through a computer chip circuit in the machine. With the cooperation of the control, the problem of "mute" point can be effectively solved.
Popular recommendation
I3 Small bar sound Vendor
2021-07-26F218 Mk2 Learning audio Vendor
2021-07-14Resolution 5T Touring KTV audio wholesaler
2021-07-16Resolution 4T Touring Bar use sound Vendor
2021-07-16RM15 Audio for bars Vendor
2021-07-15RM12 Sound bar wholesaler
2021-07-15XD18C Big sound bar Merchant
2021-07-26Resolution 4D Downfill KTV audio Factory
2021-07-17PSM18 POINT SOURCE MONITOR Speaker bar Factory
2021-07-16Resolution 18 Bar speaker Vendor
2021-07-17AX 88KTV audio sales
2021-07-17F215 MK2 ktv bar sound Factory
2021-07-14Entertainment audio is connected with the sound reinforcement of audio amplifier.Gymnasium audio pri
2021-12-28Xichang GT ROOM Net Red Bar Special Audio---Mateng Audio.Audio conference room
2022-04-15KTV audio debugging skills
2022-03-04Where is our audio advantage? How much do you know?Bar hall sound sales
2021-12-24How to do it to truly ensure the effect of home theater.Professional bar sound company
2023-03-25How to configure audio equipment
2022-12-28Combination rules and requirements for professional audio equipment.Gymnasium audio Vendor
2021-11-10Professional audio debugging-adjust the equalizer.High-end bar audio Vendor
2021-11-23How much is the speaker used in the Internet celebrity bar? Maten Audio
2022-12-09Party Bar Audio Finland AURA AUDIO China Entertainment General Agent mateng Audio Company
2021-11-23How to choose cables for professional audio?
2022-03-29Details that need attention in sound engineering.Anhui Bar Audio Vendor
2021-11-19