Lecture Hall Web Example

Halogen includes a set of starter configurations, one of which is an example of a lecture hall application that includes a set of web-based control pages to control the audio system. You can load this starter configuration as follows:

Please refer to this configuration in Halogen as you read the following sections.

Example Scenario

As you can see in the starter configuration description above, this example showcases Halogen Control Pages used in a web-based system that supports a building with an auditorium as well as a lobby and overflow room that must receive audio from a selected auxiliary source or one of the two microphones in the main auditorium. The Web Controls interfaces allows a sound tech to adjust levels, change the microphone EQ, select AV input, and change the mix for each zone. The configuration uses a HAL2, RAD6 and RAD3s.

Example Control Page

This section explores the Input Control control page. To see this page, open the Control Page Designer dialog by switching to the Processing Workspace, then click on the Control Systems drop down menu in the toolbar. Select Control Page Designer in the menu:

The dialog that opens looks similar to the following:

Controls

Each of the controls on the Input Control page are linked to other controls in the configuration. To investigate these links:

Change to the Controls tab in the Control Page Designer by clicking on its name.
Click on a control in the page layout area to select it
Find the highlighted item in the Controls palette
Click on the purple link icon to open the link dialog
Observe the dialog that opens for this link

The following illustrates opening the link dialog for the podium microphone level control:

From there you can see all of the participants in the link. In this case there are two: the Control Pages control and the Podium Mic Level control.

To provide information to the end-user, this example has set the control labels to meaningful text. For example, select the podium mic level control in the page layout area and notice Halogen selects the control as the primary selection and its label in a darker color as a secondary selection. Also, notice that you can reposition the label independently from the control, providing greater labeling flexibility:

Image and Other Elements

The Input Control page also uses an image and other elements to enhance the appearance and usability of the control page.

Notice, for example, that Vertical and Horizontal separators divide the functional areas of the page: Podium Microphone, Wireless Microphone, AV Input, and Aux Input.

Page Link

Because this control pages configuration includes two control pages, the Input Control page includes a page link which allows the user to change to the other page: Mix Panel.