start decay test
finishing merging annesh's changes
Merge branch 'assignment4' of https://github.com/scaubrey/MUSI_8803_Audio_Software_Engr into assignment4
change from black bg
Merge branch 'assignment4' of https://github.com/scaubrey/MUSI_8803_Audio_Software_Engr into assignment4
fix drawing and positioning of ppm bar