1. ಧ್ವನಿಪ್ರತಿಫಲಕ

    ♪ dhvani prati phalaka
      noun
    1. a structure over or behind a rostrum, stage, etc. designed to reflect sound toward the audience; a sounding board.
    2. a thin plate, as of wood, built into a musical instrument to increase its resonance or serve as a resonator; a sound-board.