What is a mix-minus system?

A mix-minus system is designed specifically for situations involving audio feeds where multiple microphones are used, but the goal is to prevent feedback and ensure clear communication. In this system, each listener or participant receives an audio mix that includes all the microphone signals except for their own closest microphone signal. This setup allows individuals to hear the other speakers clearly without the interference of their own voice echoing back into their headset or speakers, which would create feedback problems.

The mix-minus configuration is particularly useful in broadcast and conferencing applications where multiple inputs exist, as it allows for smooth conversations and presentations without disruptive audio issues. By strategically removing the closest microphone from the mix for that listener, the system maintains clarity and helps prevent audio distractions.

Other options do not accurately describe a mix-minus system. For instance, amplifying all sounds equally does not account for the specific needs of feedback prevention, and configurations that eliminate feedback typically involve different techniques not directly tied to the mix-minus principle. Just mixing audio before sending it to the speakers does not capture the essence of what makes a mix-minus system unique or effective in preventing feedback.