tulosignaali

Tulosignaali is a Finnish term meaning the output signal of a system. In engineering, it denotes the signal that emerges from the system at its output, as opposed to the input signal (syötesignaali) that drives the system. In mathematical models, the tulosignaali is often represented as y(t) or Y(s), depending on the domain, and is a function of the input u(t).

In analog electronics and control engineering, the tulosignaali can be a voltage, current, power, or another physical quantity carried by the system’s output channel. It may be continuous in time or discrete after sampling in digital systems. The signal’s characteristics—such as amplitude, phase, and frequency content—are determined by the system dynamics and the form of the input signal.

For linear time-invariant systems, the output is related to the input through convolution or a transfer function. In the time domain, y(t) = h(t) u(t); in the Laplace domain, Y(s) = H(s)U(s). In the discrete domain, similar relationships hold with corresponding discrete transfer functions. Thus, the tulosignaali contains the system’s response to the input and reflects how the system processes information or energy.

In practice, the tulosignaali is what sensors observe, what actuators follow, or what is transmitted to the next block in a processing chain. It is a central concept in measurement, control, and communication systems.