After his death , his intonarumori ' were used in more conventional theatre performances to create realistic sound effects .
Russolo 's treatise , The Art of Noises , is one of the earliest written documents on the use of abstract noise in the theatre .
After Russolo 's death , Russolo 's intonarumori ' were used in more conventional theatre performances to create realistic sound effects .
Russolo 's treatise , The Art of Noises , is one of the earliest written documents on the use of abstract noise in the theatre .