| English | Norwegian Bokmål |
| linear source of sound Point noise sources placed one after the other one as, for instance, in a row of cars moving on a road | linjetonekilde |
| sound emission Diffusion into the environment of a sound emitted from a given source | lydemisjon |
| sound immission The introduction in the environment of noise deriving from various sources that can be grouped in: transportation activities, industrial activities and daily normal activities | lydimmisjon |
| sound insulation material Material used to reduce the transmission of sound to or from a body, device, room, etc. | isolasjonsmateriale |
| sound level The sound pressure level (in decibels) at a point in a sound field, averaged over the audible frequency range and over a time interval | lydnivå |
| sound measurement Because of the large variations in sound magnitudes, and because the human hearing sensation seems to vary in a logarithmic way, logarithms are used in measurement of sound. The sound pressure level is given in decibels (dB) | lydmåling |
| sound propagation The travelling of acoustic waves in the atmosphere with a speed independent of their amplitude. The speed only depends on the acoustic medium and is proportional to the square route of the absolute temperature for any given medium | lydforplantning |
| sound transmission Passage of a sound wave through a medium or series of media | lydoverføring |
