Which technology provides the ability to change electrode configurations with active amplitude?

The technology that provides the ability to change electrode configurations with active amplitude is multi-steering. This approach allows for the dynamic adjustment of how an array of electrodes is utilized, enabling the control of amplitude and phase for each electrode in real time. This capability is particularly beneficial in various applications such as medical devices and signal processing, where precise control over the direction and intensity of stimulation or signal can greatly enhance effectiveness.

In contrast, options like electrode modulation primarily refer to the adjustment of signals sent through existing configurations rather than the configurations themselves. Dynamic array could suggest flexibility in electrode arrangements but does not specifically emphasize active amplitude changes as a core feature. Signal alteration, while relevant in the context of changing signals, does not directly imply the manipulation of electrode configurations, which is central to the question. The unique aspect of multi-steering makes it the correct choice with its focus on actively changing configurations while managing amplitude.