Open your ProTools Session or Create a new Session and import the 5.1 tracks you would like to turn into an LtRt track.
Make sure the Routing of the session is correct. To do this- Go to >Setup>I/O |  |
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| Go to Import Settings |  |
Go to the templates folder again and choose the UT RTF Default pio
Click Open |  |
Open your existing Mix session or create a new one
To make a new session to add your 5.1 tracks n to mix down to LtRt do the following.
Open ProTools and make a new session.
Wav file type 48KHz 24 Bit
Choose where the session will be saved
click Create |
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Go to >File>Import>Audio |  |
Navigate to the 6 channel audio files that should be organized in the following order Left = 1 Right = 2 Center = 3 LFE = 4 Ls = 5 Rs = 6 Select the audio tracks and choose "Add All"
Then click Done |  |
Choose New Track as the Destination
Click OK |  |
Next:
Go to File>Import>Session Data
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Tracks output should look like this
Set the surround sound tracks to the correct Panning settings Using the Multi Channel Panner Windows track order L,R,C,LFE,LS,RS |  |
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| To see the panning larger select the Output Window Button shown here |  |
Set the Lfe Channel to this setting
Set it to "Zero" or Unity - this picture shows the LFE slider set to -infinity of nothing. Turn up the slider till you get a "0" in the LFE window. |  |
Set the 5.1Printmaster and the LtRt Rec track to "R" record |
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See this example to show the panning of all the audio outputs for 5.1-all channels should have a panning assignment like this |
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| Click on the SurCode Plugin to make sure the encoding is turned on |  |
Example of how the "Surcode" Plug in should be set
Click on the ENCODE side tab to make sure it's active
Should be highlighted in white
Also make sure the MODE is set to Pro Logic |
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Open the Transport tool Go to Window> |
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Click the Red Record button and then the blue Play button to start the playback and recording of the LtRt and 5.1 outputs |
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The outputs will be created in real time and can be monitored in the mix window so one can see the process working.
NOTE THAT YOU WILL ONLY SEE TWO TRACKS RECORDING. That means that it's working it's mixing down the 6 tracks to two LtRt tracks. If you see more than two tracks recording in the LtRt record window it's not working correctly and the SurCode encoder is not enabled. Make sure the ENCODE side is highlighted in the SurCode plugin window
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Once finished the tracks will look like 6 channels shown here. BUT ONLY TWO HAVE AUDIO ON THEM THE Left and the Right We want to export the LtRt as an interleaved .wav of only the Left and Right Channels |
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To do this right click on the LtRt track and choose Split into Mono |
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Next select the LtRt L and the LtRt R in the Edit window and the will be highlighted in the side bar Regions window when selected. Drag them from the Regions window to the LtRt track with nothing in it.
So the track looks like this
The next step is to export the selected "Clips" as files.
Make sure the tracks are selected in the edit window which will highlight them in the "Clips" window. Then click on the "Clips" title bar
Selecting the tracks here will highlight them in the "Clips" column 
Choose the Export Selected as a 24 Bit 48 K |
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These are the files that each student needs to output true 5.1 and LtRt |
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