User manual

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PS-8810
DIGITAL SIGNAL PROCESSOR
Automatic mixers allow 'hands-free' mixing that minimises many of
the undesirable effects of using multiple microphones.
Applications such as conference rooms, training rooms and
boardrooms typically implement many microphones for
individual speakers. Simultaneously mixing all microphones with
acceptable gain before feedback manually is not possible.
The BSS PS-8810 implements three automixing functions to
address this situation: Priority Ducking, NOM Attenuation and
Adaptive Gating.
Each of the sixteen Input Processing Sections can be grouped into
any of 32 Auto-Mix Groups. In addition to the Group
assignment, each Input Section includes a separate 'Enable'
control. This controls whether the respective channel participates
in its assigned groups AutoMixing functions. There are group
Automixing controls and individual Input Processing Section
controls. Automixing’s effect on input gain is metered by the
Input Dynamic Cut/Boost Meter.
Enforces a priority order of open microphones such that high-
priority inputs duck (attenuate) lower-priority inputs. Additionally,
a maximum number of equal-priority open microphones may be
specified. Each input can be assigned a Priority from 1 (highest)
to 8 (lowest). When an input gate opens, it is allowed to pass
according to the priority that has been assigned and is dependent
upon the other open inputs within its group.
Keeping the number of open microphones to a minimum reduces
background noise while allowing a higher gain before feedback
for improved intelligibility.
Input gates must be enabled for all inputs participating in
Priority Ducking within an Automix Group.
If an input belongs to more than one Auto-Mix Group, it MUST
be the highest priority in all of the groups in which it participates.
Processing Functions Auto-Mixer
Automixer
Priority Ducking