A machinist is in an environment where the ambient sound level is of 85 dB, i.e., corresponding to the 8 Hours/day noise level on the graph. The machinist likes to listen to music, and plays a Boom Box at an average level of 82.0 dB. Calculate the INCREASE in the sound level from the ambient work environment level (in dB) when the boom box is playing as described. Please show work so I can understand how solution is acheived. I wish to understand to method of calculation.
