Each individual channel is attenuated by an amount, in dB, equal to the difference, in dB, between that channel’s level and the sum of all the channel levels. This keeps the overall system gain constant, and allows the system to deliver maximum acoustic gain without feedback.
There are three parts to the automixing feature in the DX8.
AUTO: This button turns Automixing on or off for an individual channel in the Mix A or Mix B output. This also enables the automatic gating feature. When the signal level drops below a threshold (determined by the automix algorithm), the gate activates (closes) and reduces the gain by an amount determined by the control just above the AUTO button, and ranges from 0 dB (no gate) to
The release time of the gate (how
fast the gate closes once the signal falls below the threshold) can be set to 0.5 seconds or 1.5 seconds with the buttons just below the AUTO button. The attack time is preset with a very quick response so the instant a signal appears at the input, the channel opens. This prevents the first word from being cutoff when someone begins to speak.
NOM: Each channel can be configured independently for each of the two mix outputs. The NOM button determines whether that channel is included in the automix calculations for the mix output. If the NOM button is selected on a channel (lit), then its gain is automatically and continuously adjusted by the automix algorithm.
ALC: This is an Automatic Level Control, and works like a “smart” compressor. The threshold is automatically calculated, and the release time is deliberately set to be very long to avoid the perception of “pumping.” The range control, located just above the ALC button, sets the range through which the ALC circuit works on the signal. It can be adjusted from 0 dB (no action), to
net in the event that a very loud signal should suddenly appear at the input.
MIX A and B Automixing Controls
The Mix A and Mix B outputs also
each have an ALC control. Click on the ALC button to turn it on, and adjust the range from 0 dB to
Each of the outputs have a MAX NOM selection, from one to eight. When 8 is selected, all eight of the inputs are included in the automixing calculations when NOM and AUTO is enabled. If 4 is selected, only four inputs are included in the automixing calculations. The first four active channels are included, and the
remaining channels are gated off until one of the first four active channels turns off.
You can also choose whether to have the last
active channel remain open (LAST), to have Input 1 remain open (INP 1), or to have no channels remain open (NONE) when there is no signal appearing at any of the inputs. This can be set independently for Mix A and Mix B outputs.
Setups
Audio In
Click this button to open the Audio Input window. Make the following settings and assignments in the Audio Input window:
Name: Enter a name for each channel with the keyboard. It will accept up to 32 characters.
Mute Groups: Assign each input to one of 8 mute groups. Use a Mute Group to turn off (mute) two or more channels at the same time. Mute Groups are controlled by either a Logic Input or a Selection Remote Control configured to operate a Mute Group.
Assign Fader A to Control Group: Assign input Bus A faders to one of 8 control groups.
Assign Fader B to Control Group: Assign input Bus B faders to one of 8 control groups.
DX8 – 25
