2-Minute Tutorial: Setting up a Mix-Minus in TriCaster Advanced Edition
September 28, 2017 by Chuck Baker
A common production need is for various mixes of the audio minus one or more items. This is called a mix-minus. Some example cases, for new producers:
- On-air talent has an earpiece to hear directions from the control room as well as all other show audio except the talent’s own audio, to avoid them hearing themselves as a delayed echo, which can be disconcerting for the talent as they try to speak
- When conducting a Skype video interview using a TalkShow, you will want to send the show audio back to the caller without the caller’s own audio, same reason as previous
- In a live venue such as a house of worship, you might want to isolate one aspect of your production’s audio and send that to the house audio mixing board. One example would be to isolate the audio output of the DDRs, so that when you are playing pre-recorded video for the congregation, the house mixing board can at that time play just the DDR audio, leaving out the rest of the audio feeds present such as mic’d speakers and musicians. This tutorial will show how to set up a mix-minus in TriCaster Advanced Edition software for the 8000/860/460/Mini models; the same steps work in NewTek IP Series and TriCaster TC1.
For this tutorial, our demonstrator works through setting up a mix that excludes the audio from DDR2, a channel with a TalkShow caller. To do this, he goes to the Audio Mixer in the UI, and mouses over the DDR2 level meter column. This makes the Settings gear become visible. Clicking on the gear opens the Configuration panel for DDR2 Audio.
In our example, we’re working on a production system with four audio outputs, Master, Aux 1, Aux 2 and Aux 3. Each of these has 4 inputs and 4 outputs and displays the status of the audio for DDR2 for each of those. We can see that it is active on all channels for each of our outputs. Master will be the mix that goes to Program Output with all the desired audio for the finished production, so our demonstrator picks Aux 1 to set up as the return audio for the caller, the mix minus the caller’s audio.
On the Aux 1 portion of the DDR2 audio configuration panel, our demonstrator clicks off the audio on all four channels. Now Aux 1 omits the DDR2 audio.
To get the Aux 1 mix to the caller, we next need to select it as the source for one of the 4 available hardware outputs. Click the Settings Gear on the Program Output to open the Hardware Configuration Panel. Our demonstrator chooses to assign Aux 1 to Out 3. That’s it, we’re now sending our mix-minus audio feed out to the world.
If working with a TalkShow, then either a hardware connection can be used to bring Out 3 to the TalkShow, or the NDI signal of Out 3 can be selected from the available NDI sources on the network.
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