Summer Modules¶

These simple modules do just what their name implies - they sum, or mix all of the input signals you connect to them. Think of them as very simple mixers with all channel gains set to unity. They require less DSP than other mixer modules, so use them when you need simple mixing without gain control or metering. A good example where the Summer might be used, would be to go sum the outputs of a ducker or BGM combiner. In fact the BGM combiners with their Room and BGM outputs that will usually be mixed together, were the main reasons that the summer was designed and introduced.

Versions with 2, 3, 4, 8, and 16 inputs are available. All versions have a single output that is the sum of all the inputs.

There are no controls for the module. If you double-click on the Summer module, the window allows you to name each input. Click in the box under the Input label and enter a name. The name entered will also appear on the module's input labels.

One useful application for the summer module is to add the Sidechain cue signal from a ducking scheme back to the audio mix, without having to use the extra DSP power required by placing a mixer module in the Site file. The summer modules are a pragmatic way to bring together (2) signals into a single audio path. Although, this signal is digital as it is routed through Symetrix and analog transformer based summing devices are unnecessary, it is good design practice to use summer modules rather than just simply connecting node points.

These modules are intended to be used on audio signals, but if you come up with some tricky way to use it with control signals, we won't tell product management!