A symphony orchestra can be as loud as a road drill.
Although they sound as loud as each other, the noise they make can have a very different effect on the listener.
The sound of a full symphony orchestra can be a visceral thrill, a physical pleasure.
Trevor Cox, Professor of Acoustic Engineering at Salford University, speaks to members of the BBC Philharmonic about making loud music - not just the sound but the thrill of playing in the orchestra.
Does the excitement of creating loud music cause purely physical pleasure or is something more subtle at work?
Trevor also speaks to a rock fan and a hip hop fan about the loud music they enjoy; does it need to be constantly loud for them to derive pleasure from it?
Professor Trevor Cox of Salford University explores the physical pleasure of noise.