0 -70dB Normal piano practice
70dB Fortissimo Singer, 3’
75 - 85dB Chamber music, small auditorium
84 - 103dB Piano Fortissimo
82 - 92dB Violin
85 -111dB Cello
95-112dB Oboe
92 -103dB Flute
90 -106dB Piccolo
85 - 114dB Clarinet
90 - 106dB French horn
85 - 114dB Trombone
106dB Tympani & bass drum
94dB Walkman on 5/10
120 - 137dB Symphonic music peak
150dB Rock music peak
This is just wrong in that it considers neither distance nor directionality.
The sound emitted from a woodwind expands in a whole different set of directions than a brass instrument where the sound comes out the bell or strings where the body is the resonating cavity. Volume at a mic is affected accordingly.
Are we really to believe that an 8’ Steinway at fortissimo would be drown out by a cello or an oboe?