Nightfur, for next times clarity sakes, here is a humble indication about modulation concepts and terminology.
What is modulation? This: modulating is changing the value of some parameters. You can do so by hand with a knob or a by foot with an expression pedal. You can also tell some circuits or controllers to modulate the parameters for you.
The controller is the "source" of modulation. It can be someting human-triggered (aftertouch,…) or something more automatic (LFO,…)
The modulated parameter is the "destination" of the modulation.
The "cable" or "pipe" through which the controller is modulating the destination is called the "modulation bus".
You can usually set the maximal amplitude the controller is modulating the destination with. On a Voyager, this is called "amount".
At last, on the Voyager, you have the opportunity to add a "shaper" to the equation, which is a secondary controller allowing (attention please
) to modulate the primary modulation amplitude from zero to its maximum value, aka "amount".
So when you said "I want to modulate the noise", Alain answered in other words "what parameter of the noise do you want to modulate??".
That may seem obvious but I hope it helps