Industrial/Commercial Noise Complaints

Typically we would carry out the following.

Long-term and short-term measurement of existing noise levels . Quieter areas are more sensitive to noise.
Measurement of the noise sources causing complaints
Assessment of noise against relevant standards. Is the noise at a level which is likely to annoy residents, when compared to objective criteria?
Using a predictive computer models compare different mitigaiton methods to determine the most effective.
Using the results of the modelling, make recommendations on ways to reduce noise e.g. barriers, silencers, noise limiters for music
Document all of the above in a technical report which will include appropriate recommendations to resolve the noise issues.