User Guide
58
Noise Adaptive Threshold
When an input’s post-fade level surpasses the MixAssist threshold, it will be
opened. Unlike a simple limiter or gate, this threshold is dynamic: MixAssist
continuously analyzes all inputs assigned to it to determine an average noise
fl
oor level and uses that level as the threshold. This prevents common back-
ground noise (fans, crowd murmur, etc.) from causing the input to open, while
allowing normal sounds to open the mic.
One Mic Per Sound Source
Often a sound source, such as someone speaking, is captured by more than
one microphone. MixAssist actively compares signals from all inputs and when
it senses the same audio on multiple inputs, it will only open the input in which
that speci
fi
c program audio arrived
fi
rst and is loudest.
L
This does not prevent another input from opening when unique program audio is
sensed at that input.
Number of Open Microphone Attenuation
As the number of open inputs increases, the level of each input as it is routed to
the track will decrease by 3 dB per doubling of open mics. This ensures that the
overall level of the track is consistent regardless of the amount of open inputs
routed to it.
Last Mic Lock-On
When talking stops, the last input to be active will remain open. This maintains
a consistent level of natural sound and avoids a dramatic transition to silence on
the track, even when no inputs are in use.
Setting MixAssist Off-Attenuation
The 688 also lets the user de
fi
ne the amount of off-attenuation that MixAssist
uses during the auto-mixing process.
To set the amount of off-attenuation for MixAssist:
1. From the Auto Mixer screen, with MixAssist set as the Mode, use the Select
encoder to move the orange highlight vertically down to the MixAssist Off-
Attenuation
fi
eld.
2. Press the Headphone encoder to select the
fi
eld; its background will appear
orange.
