(1)

Since difference is in decibel(dB), difference in sound level (Loudness) is 20 dB

Loudness L = 10 log10IIoL1 = 10 log10ImaxIoL2 = 10 log10IminIoL = L1 - L2         = 10 log10ImaxIo - 10 log10IminIo            = 10×log10ImaxImin                          { logb - loga =logba}  L=10log10ImaxImin20=10log10ImaxIminImaxImin=100ImaxImin=a1+a2a1-a22=100a1+a2a1-a2=10a1a2=119I1I2=a12a22=12199

Difficulty Level:

  • 38%
  • 28%
  • 20%
  • 15%