The Normalize effect sets the amplitude (volume) of the audio signal to a specific level.
Normalize - The level the audio signal level is set to. Normalizing it to 100% would set it to the maximum level without going above 0 dB.
Some effects can raise the level of the audio signal. If it raises it above 0 dB you can use normalize afterward to bring it below 0 dB. This is possible because Sound Sculptor uses floating point numbers that don't clip like integers.
To adjust the amplitude by a specific amount, use the Amplify effect.