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Audio Output
In global settings we setup a default audio output device strategy. This default is used by all new assets when they are first added to the playlist. As an alternative, once the asset is in the playlist each are capable of being reassigned to any other available output independent from others. This can be handy when you need more outside mix control and/or routing of multitrack assets or with perhaps separate overlays that may inject their own sound effects.
In most situations your needs can be filled with a typical stereo processor like the integrated sound chip found in most computers. But in cases where assets have been incorporated with many more audio tracks then just a stereo pair, handling those require specialized renders and hardware devices. An industry standard that is used often is ASIO (Audio Stream Input/Output). Legion II supports either scenario.
Installed with Legion is the MBSE Multichannel ASIO Renderer which is necessary to compile multiple audio streams into a single ASIO data stream. However, this is a third-party driver that requires a purchase of its own license.See: How to install or transfer the MBSE asio renderer license
NOTE: If instead of using an ASIO compatible device like a Tascam or PreSonus, you could take advantage of Blackmagic’s Decklink cards ability to have multiple audio tracks embedded into a single SDI output and de-embed them down stream. Decklink drivers include a simple WDM speaker driver which appears in the same list as the other standard stereo outputs.
If choosing this approach, you would leave the ‘Use ASIO Renderer’ option unchecked. Also, unlike using the ASIO render, this method does not provide any custom channel routing, instead assignments will just be one to one.
Most assets just require a standard stereo output but when the ASIO renderer is employed, the panel expands reveal additional controls.
NOTE: If instead of using an external ASIO compatible device like a Tascam or PreSonus, you could take advantage of Blackmagic’s Decklink cards ability to have multible audio tracks embedded into a single SDI output and de-embed them down stream. Decklink drivers include a simple WDM speaker driver which appears along with other stanard output . However, unlike ASIO this format does not provide any channel routing capability, instead asignments will just be one to one and this panel will just look like the simple layout shown above.
Audio Output Device Selector
Choose the preferred output by selecting from this list that will show all stereo only output devices currently available on your system. When ‘Use ASIO Audio’ is checked, this will repopulate to provide only a list of ASIO compatible devices.
NOTE: When balancing output levels between other assets, this is the control you need to use for the adjustment to be saved. Do not use the app’s master gain control for this purpose. Adjustments made there are only temporary.
Once the ASIO drivers have been applied and the asset is rebuilt this matrix grid of checkboxes will automatically arrange itself to reflect the total number tracks being streamed from the file (In - Columns) and the number of available device output channels (Out - Rows).
Choose routing by clicking on the checkbox that lines up the input column with the desired output row. You can route any input one or all output channels. So, if all you want is the input to be connected to one output, be sure to uncheck all other boxes within the column.
You must click on the ‘Apply’ button to implement any change to routing.
