Ordinary wireless microphone and true diversity microphone, how to choose professional scenes?

When purchasing wireless microphones, many buyers only look at the price and the number of antennas, and can't distinguish the essential gap between ordinary U-section and true diversity models. In the multi-person mobile speech scenes such as conference rooms, factory presentations, stage performances and large-scale press conferences, the signal stability directly determines the effect of the whole event. In this paper, the core technology of true diversity is dismantled, and the application scenarios of two types of equipment are compared to help enterprises avoid low-cost equipment stepping on the pit.
First, the basic principle: Why does the ordinary wireless microphone always have a signal dead angle?
Most of the hundreds of wireless microphones in the market adopt single-channel receiving architecture: the host only has one RF circuit, and the two antennas are simply connected in parallel to expand capacity, not independent signal acquisition.
Signal propagation defects: human body, metal columns and walls will reflect RF signals, which is prone to signal cancellation blind spots; When the speaker walks to the corner of the venue and the side of the podium, there will be noise and short-term interruption.
Weak anti-interference: multiple sets of wireless devices, WiFi routers and LED large-screen driving power supply in the same space will generate electromagnetic interference, and single-channel reception cannot filter clutter, which is prone to cross-frequency noise.
Applicable boundary: only suitable for small fixed space, small office and home KTV with the speaker standing still all the time and no more than 10 meters away from the host.
Second, the core technical advantages of true diversity wireless microphone
The true diversity receiver is built with two completely independent RF receiving circuits, and the two antennas receive the RF signal of the same microphone independently. The equipment compares the quality of the two signals in milliseconds in real time, and automatically switches to the channel with stronger signal seamlessly, with no pause and noise in the whole process.
Four core values
Eliminate signal dead angle
When the human body is blocked, separated by metal, and moving over a long distance, a stable signal link is always maintained, and the speaker can walk freely throughout the venue, and there is no sound interruption in large factories and thousands of people.
Anti-interference in super complex environment
Two-way RF filter circuit separates useless clutter, so it will not cross talk with surrounding wireless devices in the dense electromagnetic environment of factory workshops, multi-equipment conference rooms and exhibitions.
Double the transmission distance
Under the same transmission power, the effective and stable transmission distance can reach 2 times that of ordinary models, which meets the needs of large exhibition halls, outdoor presentations and factory activities.
Lossless acoustic transmission
Independent audio decoding circuit, the distortion is less than 1%, and the human voice is restored completely, so that the sound will not be stuffy and the noise will become larger due to long-distance transmission.

Guide to Three Pit Avoidances: Don't be misled by "Four Antennas" Pseudo-True Diversity
Many low-priced products in the industry rely on multiple parallel antennas to disguise themselves as true diversity, and distinguish three key points without stepping on the pit:
Parameter identification: the product parameter label "dual-channel independent reception, True Diversity" is the true diversity; Only "4 antennas UHF" is marked as single-channel parallel connection.
Hardware distinction: each microphone of the true diversity host corresponds to an independent signal display screen; Pseudodiversity only displays the frequency in a single screen.
Actual test: When the handheld microphone goes behind the metal cabinet and in the dead corner of the wall, there will be noise in the pseudo diversity, and there will be no sound quality change in the true diversity.

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