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Block Reference

Line-Plus Input Block (Analog)

How to Use

An analog Line-Plus Input block represents the input audio connected to the corresponding analog input port on a HAL3.

Adding the Block to Your System
  1. Click the Processing tab to open the Processing Workspace.
  2. In the palette area, click the I/O tab.
  3. In the Analog Input Ports (Line-Plus) category, click and drag the appropriate Line-Plus Input block into your Processing Map.
  4. Wire the input into your system as appropriate.
  5. (Optional) Customize the block name, channel name, and/or output node name by clicking their current name and then typing the custom name in the text box that appears. Click the X to save the name.
Configuring the Block
  • Open the analog Line-Plus block's properties by double-clicking the block or hovering and clicking the properties icon that appears in the upper right of the block's title bar. From this dialog box, you can do the following:
    • Designate if the input is One balanced line-level or Two consumer monoed line-level by selecting the corresponding radio button (in the Line-Plus Mode area).
    • In the Level area, set the volume of the block's output by adjusting the Gain slider or entering a value in the edit box.
    • Provide volume control to end users by linking one or more DR1 or DR3 level controls to the block's Level Gain control. You can limit the range of end user volume control by adjusting the minimum and maximum values at either end of the level control. For example, to give the end user 24 dB of attenuation, set the minimum to -24 dB and the maximum to 0 dB. To change these values, click the minimum or maximum value displayed below the slider. An edit box displays in which you can set the Minimum and Maximum parameter values.
    • Cause the audio to mute completely when dialed to the low end of its range by selecting the Off @ Min checkbox. Using the example range described above, checking Off @ Min provides continuous volume control from 0 dB to -23.9 dB and then mutes the audio completely.
    • Mute the input channel—without changing the specified Gain value—by checking the block's Mute checkbox. You can provide end users with control over this Mute parameter by linking the block's Mute control to a Logic In, DR2, or DR3 Toggle control.
    • View meter data (when connected to a HAL) for the block's audio signal after passing through the Sensitivity settings and also after passing through the Level settings.

User Interface Elements
HAL Line-Plus Input Block

Analog Line-Plus Input Block

UI Element Purpose
Analog Input (Channel 1) The input channel connected to the corresponding analog input port on the HAL
Output node Connection point for wiring the Mic/Line input channel to a specific output
HAL Line-Plus Input Block Properties

Analog Line-Plus Input Properties

UI Element Purpose
Line-Plus Mode Provides a place to specify if the input is one balanced line-level input or two consumer line-level inputs summed together to form a single mono signal.


The meter on the left displays signal data for the block input.

Gain (both a manual and linkable control) sets the volume of the block's output. Also specified is the volume range with a Minimum and Maximum value. Change the volume by adjusting the slider or entering a dB value in the edit box. Provide end users with control over the volume by linking this Level Control to the level control of a DR1 or DR3. Change the range by clicking the Minimum or Maximum value and then typing new values in the edit box that appears.

Default Gain = 0.0 dB; Default Minimum = -88.0; Default Maximum = 12.0

Selecting Off @ Min causes the audio to mute completely when dialed to the low end of its range.

Select Mute to mute the Line-Plus block's output(s) without changing the Gain value. Provide end users with output mute control by linking this Toggle Control to the Toggle Control of a DR2, DR3, or a Logic In port.

The meter on the right displays signal data for the block output.