Define a switchable part of a signal network
begin~ outputs a constant signal of 0. It is used to designate the beginning portion of a signal network that you wish to be turned off when it's not needed. You connect the outlet of begin~ to the signal inlet of another object to define the beginning of a signal network that will eventually pass through a gate~ or selector~. One begin~ can be used for each gate~ or selector~ signal inlet. When the signal coming into gate~ or selector~ is shut off, no processing occurs in any of the objects in the signal network between the begin~ and the gate~ or selector~.