audibilities

Noun

audibility (countable and uncountable, plural audibilities)

1. The quality of being heard or understood; the degree to which a thing is audible.
   • At a later date in production, the Western Region requested that the two-tone air horns should be placed on the cab roof instead of behind the buffer beam, in order to increase audibility.1962 March, Brian Haresnape, “Design in 1961—a Retrospect”, in Modern Railways, page 191

   Synonyms:

   audibleness