Outputs a one-dimensional controller which sums up the dimensions of its input controller.
The 'sum controller can be created using the following Lisp syntax:
(make-controller 'sum dimension period controller)
The 'sum controller takes three arguments:
The number of dimensions should be set to 1
As always, the period defines the time between the updates of the controller. If zero is given then it updates every sample.
The input controller should be a multi-dimensional controller.
Note that this does not sum multiple controllers, but rather sums multiple dimensions within one controller.
There are no special options for this controller.