Noise exposure calculator (XLS)
Occupational Health Clinics for Ontario Workers

Noise - basic information
Canadian Centre for Occupational Health and Safety

Noise control in industry: a basic guide
Canadian Centre for Occupational Health and Safety

Noise induced hearing loss
Workplace Safety and Insurance Board

Occupational noise exposure
National Institute for Occupational Safety and Health

Noise control - a guide for workers and employers
National Institute for Occupational Safety and Health