Lisähäviö

Lisähäviö is a Finnish term formed from lisä, meaning “additional,” and häviö, meaning “loss” or “attenuation.” It is not a standardized term in Finnish technical literature and is primarily found in informal writing, glossaries, or explanatory notes rather than in formal standards.

The term is generally used to denote extra losses that occur beyond a baseline or expected level. In electrical engineering, lisähäviö may refer to auxiliary or standby losses, such as power consumed by ancillary circuits, control electronics, or cooling inefficiencies not included in the main efficiency figure. In acoustics or signal processing, it could describe additional attenuation introduced by nonessential components or by environmental factors beyond the designed response. In energy-efficiency discussions, lisähäviö might describe incidental or unavoidable losses added to theoretical models.

Because there is no widely accepted definition, the exact meaning of lisähäviö is highly context-dependent and should be defined explicitly by the author in use. When clarity is needed, it is better to use more precise terms such as “additional losses,” “extra attenuation,” or “standby losses,” tailored to the relevant field. See also häviö (loss) and attenuation.