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Research Question: 1. What is the noise level in residential and industrial areas of Patiala and Ludhiana? 2. What are the various measures to reduce noise levels? 3. What are the exceed the permissible limit? Objectives: 1. To compare the noise levels (residential and industrial areas) in the city of Patiala and Ludhiana. 2. To suggest ways and measures to prevent and reduce noise levels exceed the permissible level for further study to know the harmful effect of noise on health. Study design: Cross-sectional study. Setting: Urban areas (residential and industrial areas) in the city of Ludhiana and Patiala. Study variables: Various parameters like Leq, L10, L90 maximum and minimum. Statistical analysis: Unpaired ‘t†test.