• Calculate sound pressure level
  usage: rmscalculator.py [file] [1st period start] [1st period end] [2nd period start] [2nd period end]
  example: rmscalculator.py test.wav 1 5 11 15

• Calculate total harmonic distortion
  usage: thdcalculator.py [file] [fundamental freq] [period start] [period end]
  example: rmscalculator.py test.wav 200 1 5

[Note]

1. Only works for 16bit audio file format. Need changes to support other formats.
2. Support audio file up to 4 channels

[Requirements]

1. install python3
2. install pip
3. install pydub, numpy, matplotlib