Convenience class for an envelope generator combining fadeTime and gate arguments.
Returns an EnvGen.
| i_level |
initial level of envelope (if set to 1, it starts open) |
| gate |
a gate input. if nil, EnvGate creates a NamedControl named 'gate' |
| fadeTime |
an input for both attack and decay time. if nil, EnvGate creates a NamedControl named 'fadeTime' (default time: 0.02) |
| doneAction |
doneAction of the EnvGen |
| curve |
envelope curve |