Fill in the Blanks Sound and its propertiesOnline version Fill in the gaps activity related to sound and its properties by fran musicalarcos 1 pitch duration quiet sound amplitude properties frequency loudness decibel high timbre pitch short dynamics loud Each has four : pitch , duration , dynamics and . According to the a sound can be or low , according to the it can be long or ; according to the it can be or soft / The depends on the of the vibration . The dynamics depends on the of the wave . The system used to measure the is the system .