Question

3. -17.7 points My Notes If you increase the intensity of a sound by a factor of 3, how much does the decibel level increase? Inew = 3.org LdB,new - LdB, onig + dB 4. -123 points My Notes If one clarinet causes a 60 dB (sound level), then two clarinets cause how large a sound level in decibels? 2 clarinets would have a sound level of dB 5 clarinets? dB 9 clarinets? C dB

Answer 1

3 time Since the increase in intensity is Pz = 3 The difference is DI - 1o log full stolog3 . Csince 27 = 3) P =4.77 dB : I new= I orig +14.77 dB] 4.7 intensity becomes 2 When you add a clarinets, the times large. So by above formula I new = forig + tolog 1 2 3 = 60 tlox log 2 . +60+3.01 I new = 63.0 dB Similarly for 5 clarinets Inew = 60tlo logs =6067.0 Inew=670 dB & for g clarinets Inew= Go to logo +60+9:5 . I new = 69.5 dB