2.4GHz wireless technology has become the mainstream transmission technology for wireless products. The so-called 2.4GHz refers to a working frequency band. The 2.4GHz ISM (Industry Science Medicine) is a universally used wireless frequency band. It can work in the 2.4GHz frequency band to obtain a larger range of use and stronger anti-interference ability. . The working principle of digital wireless microphone: sound → convert to digital signal → digital modulation → digital wireless transmission → receive digital signal → convert into audio signal output. The digital wireless microphone adopts A/D conversion chip for digital sampling after picking up the sound, all adopt digital encoding and full-range perfect transmission, and the total harmonic distortion of the whole range (THD is lower than 0.45%, which affects the normal sound quality of the original sound. Less. As long as it is within a certain error range, the sound effects are the same, the sound quality is clear and clear, and the sound effect is also the "sound quality" problem. Digital ID address recognition technology. Each receiver device adopts "one machine one" Each machine is a unique ID identification address, and there is basically no crosstalk phenomenon, which completely solves the problem of "crosstalk" and "co-channel interference" that U and V analog microphones have not solved well. Digital wireless microphone The circuit design is simple, no compression and expansion circuit to improve the dynamic range, effectively avoiding high-low frequency phase distortion and compression noise in analog wireless microphone. The digital wireless microphone has high operating frequency and can easily avoid various high-frequency interference and achieve signal Confidentiality. Digital wireless microphone components are less easy to produce and have no adjustable parts to ensure long-term use. Qualitative.