In this video, we’ll continue to explore the Virtual View of AVX Architect and look at the Summer object. The Summer object is found in the virtual view, under the “Mixers/Gains” section of the audio processing objects. The Summer object will simply allow the combination, or summing, of incoming audio signals.  An example would be a left and right signal combined into a single mono signal. The Summer object has no default panel and no controls since everything is handled at unity gain. It performs only the function of combining the incoming signals. 
The “Properties” window has the usual naming, workspace location, and DSP allocation options. Under the “Options” section, the number of processing block input channels can be changed. The “Stereo” option will add a second output to the Summer object.  Even though one doesn’t typically  think of a Summer in stereo, this can be useful for summing multiple stereo input sources while maintaining a stereo-split output. This means that all the left, or odd number input channels will be summed to the first output, and all the right, or even number input channels will be summed to the second output.