Acoustic noise

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1. Any disagreeable or undesired sound.

2. A class of sounds, generally of a random nature, which do not exhibit clearly defined frequency components.

Reference: Icharge currentIntensity.EIlluminanceEnergy.CContrastCelsius (previously Centigrade)Capacitance.

Please note that this is the term as it stands in the original IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Dictionary edition (1970-1989)