Wireless microphone performance often affected by the frequency of peripheral equipment interference, improper operation of the user and other factors affect the emergence of a variety of failures, next, Palm Xiao Bian will teach you how to avoid and prevent the most common wireless microphone problem
The entire system is not compatible
There is a different degree of compatibility between frequencies, and if you are well aware of your system's condition, you can use more systems more aggressively, but the point is how to weigh the compatibility of your entire system. Most frequency-compatible software have an important assumption at design time that all receivers are always on or not mute (even if some transmitters are turned off occasionally) so that all receivers do not pick up To the possible noise intermodulation signal. As a result, the software needs to be designed with enough room for intermodulation signals and wireless microphone. If you assume that the sound system operator is to play a more active role in the activity, then the system needs a wider range of compatibility.
In this case, assume that the operator will silence all receivers and all transmitters will remain with the show. The transmitter and receiver antennas are also about the same distance, and these assumptions are perfectly fine for the Broadway Theater, but in school auditoriums the systems are operated by untrained personnel and not much in the way of achieving the same expected performance It is possible. When the transmitter is located very close to the receiving antenna, or high-power transmitter is running, the interference will be more serious. That's why it is far more difficult to have 40 wireless system in a movie theater than to work in schools (many transmitters are very close to the receiver), and there is a system in every classroom in the school, complete with transmitters Independent, but close to their own receiver.
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When using wireless microphone, there is always interference between the system itself. Although each system has frequencies or intervals of several megahertz, Intermodulation Distortion (IMD) can still cause interference between microphones. If there is not enough space between the intermodulation signal and the device's operating frequency, it is difficult for the receiver to pick up the signal from the transmitter. Typical phenomena are crosstalk between systems, frequent signal loss or excessive noise and distortion. Small intervals between frequencies depend on the design of the system receiver, and entry level receivers may need to be separated by 1 MHz from the nearest neighbor. The more expensive receivers usually have narrower adjustment "windows" that allow for a smaller intermodulation frequency separation between each system.
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