Installation guide

Can I perform pre- or post-processing on Distributed Program Bus audio sources?
You can perform pre-processing on the input to the Distributed Program Bus. You can perform post-proc-
essing as well, but not from the Distributed Program Bus itself. You configure post-processing from within
the Zone Processor or other processing blocks placed after the Zone Processor block.
Can I customize which Distributed Program Bus channels are available in each zone?
No, any input going into the Distributed Program Bus will be available in all of your Zone Processor and/or
Room Processor blocks. You cannot eliminate a specific channel for a specific zone or eliminate the Dis-
tributed Program Bus entirely for a specific zone. If you link remote control hardware (such as a DR) to the
zone to give your end users control over the audio selection, all the Distributed Program Bus channels (as
well as any local input you may have configured) will appear on the selector device.
For a specific zone, can I include local audio sources in addition to the Distributed Program Bus
sources?
Yes, you can include both local audio sources as well as the Distributed Program Bus channels. You connect
the local sources to the Aux inputs on the relevant Zone Processor or Room Processor block. For details, see
Creating a Zone Processor and Adding a Room Combine Processor in the Halogen Help System.
How do Igive my end users control over selection of Distributed Program Bus channels?
As with any other control in the HALSystem, you use control linking to give your end users remote control
over selection of Distributed Program Bus channels. You perform this control linking from within the prop-
erties dialog box of each Zone Processor or Room Processor block in your system. For details, see Creating a
Zone Processor and Room Processor Selector Block in the HalogenHelp System.
About Zone Processing
Working with output zones is nothing new. All audio systems have them. You've no doubt configured them count-
less times. But we can state with confidence that it's unlikely you've ever configured an output zone as quickly as
you can in the HAL System. Read on to learn about another of the HAL System's many time-saving shortcuts—the
Zone Processor block!
What is a HAL System Zone Processor?
The HAL System Zone Processor handles output zones. "Great!" you say. "But what exactly does handle
mean?" To fully understand the power of this block, let's first review the typical things you would do when
creating an output zone. You would:
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Select and wire all of the input audio for the zone. This input might include background music chan-
nels, microphone input, a jukebox, a CD player, and so on.
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Optionally configure the priority of each input so the system knows what to do when multiple inputs
are sending a signal (for example, what to do with the background music when a customer pays for a
song on the jukebox).
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Configure remote control over the audio selections so that end users can control what is being heard in
the zone.
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Configure remote control over the level so that end users can adjust the volume in the zone.
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Configure paging for this zone as well as the mixer/ducker controls, taking great care to configure your
level controls in the right order to ensure that pages are audible.
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Configure emergency paging, making sure it ducks all other inputs.
HAL SYSTEM DESIGN GUIDE
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