How to UseAn analog Mic/Line Input block represents the input audio connected to the corresponding analog input port on HAL.
- Click the Processing tab to open the Processing Workspace.
- In the palette area, click the I/O tab.
- In the Analog Input Ports category, click and drag the appropriate Mic/Line block into your Processing Map.
- Wire the input into your system as appropriate.
- (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.
- Open the analog Mic/Line 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 Mic or Line by selecting the corresponding radio button (in the Sensitivity area).
- Also in the Sensitivity area, adjust the Gain to the appropriate level depending on the sensitivity of the microphone or input source you plan to use.
- If the input is Mic and the microphone needs phantom power, select the +48 V Phantom checkbox.
- 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 selecting 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.
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