As an audio control device in the process of enterprise video conferencing, phantom power is generally provided on the mixer. When using a condenser microphone and the microphone cable is balanced, press the phantom power switch to provide a polarized voltage to the microphone. In other cases, the phantom power should be turned off. Avoid unnecessary energy losses and additional costs, and do a good job of maintaining the system as a whole.
The mixer is an audio signal mixing and processing console that is the heart of the audio processing system. The mixer consists of an input, a bus, and an output section, where the bus section links the input and output sections. The process of processing the signal by the mixer is as follows: the audio signal enters the mixer from the microphone or line input, and after gain adjustment, enters the equalizer processing to complete the sound quality compensation. Then, the attenuation ratio is used to adjust the mixing ratio, and then through the phase adjustment, the left and right channel bus bars and the group bus are entered; at the same time, the signals extracted before and after the faders enter the auxiliary bus. The mixed signal from the busbar is mixed, amplified, amplitude-amplified, isolated and amplified, and sent to the corresponding output interface.
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