Arguments: signal, sig1, sig0 branch

Branch switches between two signals given a gate signal. A value of "1" will go to sig1 (first signal), and a value of 0 will go to sig0 (second signal).

The example below uses branch to switch between a random and steady signal to be used as frequency for a sine wave. The switching mechanism is generated via metro and tog

 # generate gate signal with metro and tog
 1 metro tog 
 # signal 1: random signal
 200 800 10 randh 
 # signal 2: steady signal
 0.3 sine