ISO/TR 11690-3:1997 Preview
Acoustics -- Recommended practice for the design of low-noise workplaces containing machinery -- Part 3: Sound propagation and noise prediction in workrooms
This standard was last reviewed and confirmed* in 2009.
*Therefore this version remains current
Deals with sound propagation together with the prediction of sound pressure levels at the workplace. Contains recommendations concerning the use of noise prediction as an aid for noise control.