An Automixer is software that blends multiple channels of audio that can be difficult to impossible to mix with mechanical faders operated by a human. When a speaker starts to talk, the automixer automatically opens its microphone and adds it to the mix. Then when a speaker stops talking, their microphone will be attenuated “closed” and essentially be removed from the mix.
Removing unused microphones will result in a lower noise floor giving you a cleaner, better-sounding mix without having to manually ride the faders. Manually riding faders in unscripted dialog often result in missing the start of when a person begins to speak.
The Zaxcom Auto-Mixer has no limit on the number of microphones that can be active at one time.