Occupational Safety and Health Administration (OSHA), requires a minimum twice a year for noise monitoring inspection in industries to certify their workplace is within the safe hearing range. This is governed under the standard in ISO14001 & OSHAS18001. The conventional method which is widely in practice require two types of noise level inspection which are the personal monitoring and area monitoring. Currently the inspection is done manually by the appointed certified consultant. Such inspection is very costly for the industries especially for large scale production floor. The results from the test may be disputable as the factory setup could be different during the test for the sake of passing the inspection.