dB peak-peak dB peak-peaka unit of relative pressure when the pressure of the sound wave is characterized as the peak-to-peak pressure. Related Articles: Glacial Calving in the Arctic Produces Record Source LevelsIntroduction to Signal LevelsSound Pressure Levels and Sound Exposure LevelsScience Tutorial: Sound Pressure Levels and Sound Exposure Levels Chris Knowlton2017-02-26T20:10:10-05:00