acoustic projection acoustic projection /əˈkuːstɪk prəˈdʒɛkʃən/

noun

1. The acoustic phenomenon that gives sound a penetrating quality  ( acoustic projection , projection , sound projection )
   the acoustic phenomenon that gives sound a penetrating quality
    Our ukuleles have been designed to have superior sound and projection
   our ukuleles have been designed to have superior sound and projection
    A prime ingredient of public speaking is projection of the voice
   a prime ingredient of public speaking is projection of the voice