Question

1) Why are instruments tuned before being played together? If two violins were slightly
out of tune and playing the same note, how would it sound?

2) Noise canceling headphones are intended for wearing in noisy environments where
the user needs to hear some signal (e.g. radio communications). These headphones
reduce noise far beyond the acoustic isolation of the headphones. Using the principles
discussed in this lab, explain how such a product might work.

Answer 1

1) The instruments must be tuned before being played together because if the two instruments are not in tune with one another it will sound unpleasant because two notes which are very slightly different in pitch will produce a beat.

If two violins were out of tune and playing the same note, then it will sound very unpleasant.