Ambient noise
The noise exists at the point of interest from all sources other than the specified sound signal.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
The noise exists at the point of interest from all sources other than the specified sound signal.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM