For the solution of noise problems, it is very convenient to view the system in terms of a source, a path and a receiver, as shown in Fig. 3 in the form of a block diagram. The source is the point (or points) in space where the noise apparently originates. The path is the line (or lines) in air along [...]
After reading this article you will learn about Noise Measurement and Control in Factories:- 1. Necessity for Noise Measurement and Control 2. Methods of Noise Measurement 3. Threshold Sound Levels 4. Risk Areas 5. Measuring Instruments 6. Control 7. Control of Sources 8. Prevention of Propagation 9. Remote Control and Isolation 10. Hearing Protection. Contents: Necessity for Noise Measurement and [...]
This article throws light upon the three main types of doors that eliminate all paths of noise. The types are: 1. Hinged Doors 2. Door Furniture 3. Sliding Doors. Type # 1. Hinged Doors: The simplest and cheapest solution is provided by hinged doors; but they should be acoustically insulated, and should achieve an airtight seal when closed. There is [...]