Theory of Automixer operation

Automixer employs the Dugan Speech System, which automatically adjusts the automix gain of up to 64 live speech microphones.

One person speaking with multiple microphones

Two people speaking with multiple microphones

If one person speaks, that microphone’s gain level will fade up instantly, while the other microphone gains will be reduced. If a different person speaks, the same effect will be obtained.

If two people speak, the gain of two microphones will be automatically distributed so that the total gain will stay constant. The gain of the third microphone will be reduced.

The behavior of the Dugan Speech System is different than that of a limiter or auto-level controller function. This system enables an engineer to adjust the level balance as usual, even for multiple speakers. Also, while no one is speaking, the system detects the microphone input levels and automatically distributes the gain. So, the faders can be left in a raised position.

Automixer distributes automix gain more preferentially to channels with higher input levels. Therefore, insert it to POST ON. Automixer provides the following benefits:

  • It prevents the annoying fluctuation of levels and uneven ambient noise that is input from microphones on the channels with Channel Off or the minimum fader setting.
  • It adjusts the gain and fader settings according to the speaker’s voice level on each microphone, and inputs even signal levels, resulting in more accurate automix gain distribution.
  • It achieves preferential distribution of automix gain for the speaker you want to emphasize by raising the fader for that speaker or lowering others.