signaalikierron

Signaalikierron is a term used in Finnish-language discussions of signal processing and cybernetics to describe the phenomenon of a system where a portion of the output is fed back into the input, creating a cyclical flow of information known as a feedback loop. The word combines signaali (signal) and kierron (circulation or loop). In practice, signaalikierron covers electrical feedback in circuits as well as informational or regulatory feedback in broader systems.

In electronic contexts, the behavior of signaalikierron depends on loop gain, delay, and phase shift. Negative feedback tends to stabilize a system by reducing error and flattening gain, while positive feedback can amplify changes or sustain oscillations. The design of filters, amplifiers, and oscillators often relies on carefully managed signaalikierron to achieve desired stability or waveform generation. Beyond electronics, the concept is also used descriptively in biology, ecology, and social systems to characterize how outputs influence subsequent inputs, forming regulatory or adaptive loops.

Not all literature treats signaalikierron as a distinct technical term; in many cases it is described using standard terminology such as feedback, loop gain, and control theory. The term is most commonly encountered in Finnish writings and discussions where it serves as a convenient label for feedback-driven processes within various disciplines.

See also: feedback, control theory, loop gain, oscillation, signal processing.